2008 Chevrolet Silverado 1500 Lug Nut Torque & Bolt Specs

The 2008 Chevrolet Silverado 1500 lug nut torque is 140 ft-lbs (190 Nm), tightened with a 22mm (13/16") socket on M14x1.5 studs. Torque in a star pattern in two passes (snug, then final), and re-check after the first 50–100 miles of driving. Use a calibrated torque wrench — not an impact gun — for the final pass.

Lug nut torque: 140 ft-lbs (190 Nm) · Socket size: 22mm (13/16") · Thread: M14x1.5.

This page is the OEM-referenced fastener summary for the 2008 Chevrolet Silverado 1500. Use it before any maintenance or repair job where torque values matter — brake work, wheel changes, suspension service, engine teardowns, or oil changes. Specs are pulled from manufacturer service literature, cross-checked against community data, and updated as new chassis variants become available.

GM lug-nut torque clusters around 140 ft-lbs (190 Nm) for half-ton Silverado/Sierra and 100 ft-lbs for passenger cars like Malibu, Impala, and Cruze. GM heavy-duty trucks (2500HD/3500HD) jump to 165 ft-lbs. Most GM passenger cars use a 19mm socket; trucks moved from 22mm to 22mm-with-deep-well in 2014. Watch for GM's flat-flange lug nut design on the Silverado — the standard cone-seat aftermarket lugs will not seat correctly.

Common fastener categories on the 2008 Chevrolet Silverado 1500

Repair guidance for this model year

For 2008 model-year work: Always use a calibrated torque wrench for safety-critical fasteners, and replace lock washers and crush washers on every reassembly.

Tools you will need

Frequently asked questions

What is the lug nut torque on a 2008 Chevrolet Silverado 1500?

The OEM-specified lug-nut torque for the 2008 Chevrolet Silverado 1500 is 140 ft-lbs (190 Nm), using a 22mm (13/16") socket on M14x1.5 thread studs. Use a calibrated torque wrench in a star pattern, in two passes (50% and 100%), and re-check after 50-100 miles of driving.

What socket size do I need for the 2008 Chevrolet Silverado 1500 lug nuts?

The 2008 Chevrolet Silverado 1500 uses a 22mm (13/16") socket. A 6-point impact-rated socket is recommended over a 12-point chrome socket — 12-points round off lug nuts under impact-driver use.

Are the 2008 Chevrolet Silverado 1500 fasteners metric or SAE?

Metric is the standard for this vehicle. Most fasteners on this vehicle are metric (M6, M8, M10, M12, M14). Bring a full metric set; SAE substitutes can round the head. Bolt-head markings are the fastest way to confirm grade and material at the bench.

Other Chevrolet Silverado 1500 years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

→ 2008 Chevrolet Silverado 1500 oil drain plug torque & size

→ 2008 Chevrolet Silverado 1500 suspension & steering torque specs (control arm, ball joint, tie rod)

→ 2008 Chevrolet Silverado 1500 engine & transmission mount torque specs

All 189 2008 Chevrolet Silverado 1500 fastener specs

Per-bolt torque, wrench size, and thread spec for the 2008 Chevrolet Silverado 1500, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both. 4 of the 189 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed June 2026).

Brakes — 2008 Chevrolet Silverado 1500

Brake fasteners on the 2008 Chevrolet Silverado 1500 — caliper bracket, slide pins, and banjo bolt torque follow. At the caliper guide pins / slide pins to caliper bracket, the front caliper slide pin bolts torques to 74 ft-lbs (100 Nm) (18mm drive, M12 thread). OEM-verified spec. For the rear caliper bracket to rear axle/knuckle flange, plan for a 18 mm tool on a M16x1.5 (18 mm hex) stud; final torque is 148 ft-lbs (Gen3 K2XX 2014 confirmed by TRQ repair video) (rear brake caliper bracket bolts (disc brake trucks)). Abs wheel speed sensor bolt (front) tightens to 115 in-lbs (9.6 ft-lbs) — Gen1 GMT800 (1999-2006 per TRQ video); 13 ft-lbs — Gen2 GMT900 (2007-2013 per Merchant Auto FSM), takes a 3/16 in Allen (Gen1); varies Gen2 driver, runs on 3/16 Allen head threads, located at the front abs sensor to wheel bearing hub. The rear drum brake wheel cylinder bolts uses a 13 mm drive on a M8x1.25 thread, torqued to 11-17 ft-lbs (typical GM range for wheel cylinder mounting bolts) at the wheel cylinder to brake backing plate. At the caliper bracket (anchor plate) bolts to steering knuckle, the front brake caliper bracket (anchor plate) bolts torques to 148 ft-lbs (200 Nm) (21mm drive, M14 thread).

Engine — 2008 Chevrolet Silverado 1500

Engine bolt-by-bolt torque for the 2008 Chevrolet Silverado 1500, including the long block, valve covers, and intake. For the lower intake manifold to cylinder heads (composite manifold, 10 bolts), plan for a 8 mm tool on a M8x1.25 stud; final torque is Step 1 = 44 in-lbs; Step 2 = 89 in-lbs (7.4 ft-lbs final) (intake manifold bolts). Valve (rocker arm) cover bolts tightens to 106 in-lbs (8.8 ft-lbs), takes a 8 mm driver, runs on M6 threads, located at the valve cover to cylinder head, each bank. The spark plug uses a 5/8 in (16 mm) spark plug socket drive on a M14x1.25 thread, torqued to 15 ft-lbs (new installation into new/fresh aluminum head); 11 ft-lbs (subsequent reinstalls into used threads) at the cylinder head — 8 plugs on v8, 6 on v6. At the 10x m11 head bolts per head + 5x m8 inner bolts, the cylinder head bolts — m11 (all gen iii ls, gen1/gen2 trucks) torques to M11 bolts: Step 1 = 22 ft-lbs; Step 2 = +90 degrees; Step 3 = +90 degrees (bolts 1-8 / longer bolts); Step 3 = +50 degrees (bolts 9-10 / shorter outer front/rear bolts). M8 inner bolts: 22 ft-lbs (no (13 mm (M11), 10 mm (M8) drive, M11x2.0 (long bolts); M8x1.25 (inner small bolts) thread). For the alternator mounting to bracket; bracket to block, plan for a 15 mm / 13 mm tool on a M10x1.5 (mounting bolts); M8x1.25 (small bracket bolts) stud; final torque is 37 ft-lbs (bracket bolts to block); 18 ft-lbs (generator rear bracket to block); 18 ft-lbs (generator rear bracket to generator) (alternator (generator) bolts). Timing chain guide bolts tightens to 26 ft-lbs (Gen III LS1/LS6 reference — applies to Gen III truck engines); 18 ft-lbs (Gen IV LT), takes a 10 mm driver, runs on M8 threads, located at the fixed guide on passenger side of timing chain. The engine mount stud / bolt to engine block uses a 15 mm drive on a M10x1.5 thread, torqued to 37 ft-lbs at the block-side of front engine mount bracket. At the main bearing caps, inner fasteners (m11 hex bolts), the main bearing cap bolts — inner (gen iii/iv iron block) torques to Step 1 = 15 ft-lbs; Step 2 = +80 degrees (13 mm drive, M11x2.0 thread). For the individual coil mounting bolts to coil bracket on valve cover, plan for a 8 mm tool on a M6x1.0 stud; final torque is 106 in-lbs (8.8 ft-lbs) (ignition coil pack bolts (coil-to-bracket)). Oil filter tightens to 22 ft-lbs, takes a Oil filter wrench (65 mm or 14-flute cap type) driver, runs on 3/4"-16 (SAE spin-on thread) threads, located at the oil filter mount on engine block or adapter. Confirmed against manufacturer service literature. The oil pan bolts — m6 (to rear cover) uses a 8 mm drive on a M6x1.0 thread, torqued to 106 in-lbs (8.8 ft-lbs) at the oil pan rear edge, bolts into rear crankshaft cover. At the timing chain/front cover to engine block, the engine front cover bolts torques to 18 ft-lbs (10 mm drive, M8x1.25 thread). For the power steering pump to bracket / block, plan for a 13 mm or 15 mm depending on bolt tool on a M8x1.25 stud; final torque is 18 ft-lbs (pump to bracket); 18 ft-lbs (bracket to block) (power steering pump bolts). Cam actuator (vvt) solenoid bolts tightens to 18 ft-lbs (Gen IV LS with VVT — LC9, LY5, LMG, L9H, 2007+); 106 in-lbs (camshaft position sensor bolt, all Gen III), takes a 8 mm / 10 mm depending on bracket driver, runs on M6 threads, located at the front of engine block / timing cover, vvt solenoid mounting. The camshaft sprocket bolts (3-bolt cam, gen iii ls) uses a 10 mm drive on a M8 thread, torqued to 26 ft-lbs at the front of camshaft, sprocket retention. At the engine block valley (beneath intake manifold), 2 sensors v8, the knock sensor bolts torques to 15 ft-lbs (15 mm hex (sensor body hex) drive, M8x1.25 thread). For the driver's side of timing chain, block-mounted tensioner, plan for a 10 mm tool on a M8 stud; final torque is 18 ft-lbs (timing chain tensioner bolts). 4.8l v8 (lr4) — notes vs 5.3l tightens to See all 5.3L entries above — all apply, takes a Same as 5.3L driver, runs on Same as 5.3L threads, located at the all torque specs identical to 5.3l ls. The oil drain plug uses a 15 mm drive on a M12x1.75 thread, torqued to 18 ft-lbs (25 Nm) at the bottom of oil pan. At the thermostat housing/water outlet at front of intake manifold, the thermostat housing (water inlet) bolts torques to 11 ft-lbs (10 mm drive, M8x1.25 thread). For the main bearing caps, side bolts (horizontal), plan for a 10 mm tool on a M8x1.25 stud; final torque is 18 ft-lbs (Gen III/IV iron block). 22 ft-lbs + 60 degrees (Gen V LT aluminum block 2014). (main bearing cap side bolts). Engine mount through bolt (frame-side isolator) tightens to 70 ft-lbs (through bolt); 59 ft-lbs (through bolt nut), takes a 18 mm driver, runs on M12x1.75 threads, located at the through rubber isolator, connecting bracket to frame crossmember. The harmonic balancer (crankshaft damper) bolt uses a 1-1/16 in (27 mm) 12-point socket drive on a M21x1.5 (large crankshaft thread) thread, torqued to TTY PROCEDURE — Step 1 (old bolt, installation pass to seat balancer): 240 ft-lbs. Step 2 (NEW bolt only): 37 ft-lbs, then +140 degrees. at the front of crankshaft. At the oil pan perimeter bolts, sides and front, the oil pan bolts — m8 (to block and front cover) torques to 18 ft-lbs (10 mm drive, M8x1.25 thread). For the throttle body to intake manifold (4 bolts), plan for a 8 mm tool on a M6x1.0 stud; final torque is 106 in-lbs (8.8 ft-lbs) (throttle body bolts). Exhaust manifold bolts tightens to 2-stage: Step 1 = 11 ft-lbs; Step 2 (final) = 18 ft-lbs. (New cylinder head: 11 ft-lbs first pass per some sources.), takes a 10 mm or 13 mm (varies by year — some use Torx) driver, runs on M8x1.25 threads, located at the exhaust manifold to cylinder head, 8 bolts per side. The crankshaft position sensor bolt uses a 8 mm drive on a M6x1.0 thread, torqued to 18 ft-lbs at the block, passenger side near crank, behind oil filter. At the rocker arms on cylinder head, the rocker arm (valve lifter) bolts torques to 22 ft-lbs (10 mm drive, M8x1.25 thread). For the connecting rod big-end cap, plan for a 9 mm or T-40 Torx tool on a M9x1.25 (bolts have retaining sleeve) stud; final torque is Step 1 = 15 ft-lbs; Step 2 = +75 degrees (connecting rod bolts (second design — most common, 1999+)). Engine valley cover bolts tightens to 18 ft-lbs, takes a 10 mm driver, runs on M8x1.25 threads, located at the valley cover (cam actuator housing cover on top of block between heads). The cylinder head bolts — gen v lt (2014 k2xx) uses a 13 mm / 6 mm Allen drive on a M11x2.0 and M8x1.25 thread, torqued to All 20 bolts Step 1 = 59 ft-lbs; All 20 Step 2 = +90 degrees; 19 standard bolts Step 3 = +60 degrees; Allen bolt (LH head, front-most position) Step 3 = +40 degrees at the 20 head bolts per head (19 standard + 1 allen-head on lh head). At the front of block, cam retainer/thrust plate, the camshaft retainer plate bolts torques to 18 ft-lbs (standard hex bolts); 11 ft-lbs (countersunk Torx/hex bolts) (10 mm or T-30 Torx drive, M8 thread). For the water pump to front engine cover, plan for a 10 mm tool on a M8x1.25 stud; final torque is Step 1 = 11 ft-lbs; Step 2 (final) = 22 ft-lbs (water pump bolts).

Drivetrain — 2008 Chevrolet Silverado 1500

Drivetrain and driveline fasteners for the 2008 Chevrolet Silverado 1500 — axle, transmission, and differential plugs. Transfer case-to-transmission adapter bolts / nuts (nvg246 / nvg263) tightens to 37 ft-lbs (adapter bolts and nuts), takes a 15 mm driver, runs on M10x1.5 threads, located at the transfer case to transmission adapter. The transfer case drain plug uses a 15mm drive on a M14 x 1.5 thread, torqued to 25 lb-ft at the transfer case. At the front differential cover bolts on aam 9.25 ifs axle, the front differential cover bolts (aam 9.25-in ifs, 4wd) torques to 24 ft-lbs (drain/fill plug); cover bolt torque ~ 30 ft-lbs (same as rear cover) (13 mm drive, M8x1.25 (cover bolts) thread). For the driveshaft yoke, plan for a 1/2 inch tool on a 5/16-18 stud; final torque is 15 lb-ft (driveshaft u-joint strap bolt). Transfer case drain/fill plug (nvg246 / nvg263) tightens to 15 ft-lbs, takes a 3/8 in square drive or 24 mm socket driver, runs on 3/8" NPT (pipe thread) or metric depending on case threads, located at the transfer case case bottom/side. The transmission crossmember bolts (to frame) uses a 18 mm drive on a M12x1.75 thread, torqued to 85 ft-lbs at the transmission crossmember/support bracket to frame rails. At the differential housing, the differential fill plug torques to 24 lb-ft (3/8 inch drive, 3/8-18 NPT thread). For the frame crossmember, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (driveshaft center support bearing bolt). Rear differential cover bolts (gm 9.5 axle) tightens to 30 ft-lbs, takes a 13 mm or 15 mm driver, runs on M8x1.25 or M10x1.5 threads, located at the rear differential cover, gen2 trucks with 9.5 axle. The front cv axle shaft inboard flange bolts (4wd) uses a 15 mm drive on a M10x1.5 thread, torqued to 58 ft-lbs at the inner cv joint 6-bolt flange to front differential output. At the transmission/transfer case, the transfer case mounting bolt torques to 37 lb-ft (18mm drive, M12 x 1.75 thread). For the differential housing, plan for a 3/8 inch tool on a 3/8-18 NPT stud; final torque is 24 lb-ft (differential drain plug). Front differential actuator bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the front axle housing. The rear ring gear bolts (gm 9.5 axle) uses a 18 mm drive on a M12x1.25 thread, torqued to 103 ft-lbs (Merchant Automotive FSM) at the ring gear to carrier, 9.5-in axle. At the differential cover, the differential cover bolt torques to 25 lb-ft (13mm drive, M10 x 1.5 thread). For the rear driveshaft u-joint strap bolts at rear axle pinion flange, plan for a 13 mm tool on a M8x1.25 (strap bolts) stud; final torque is 18 ft-lbs (U-joint strap/cap bolts, M8) (rear driveshaft bolts (to rear pinion/differential flange)). Front wheel hub / axle nut (4wd) tightens to 177 ft-lbs (1999-2009); 188 ft-lbs (2010+), takes a 35 mm or 36 mm socket driver, runs on M28x1.5 or 1-5/16"-18 (large spindle nut) threads, located at the outer end of front half-shaft, axle nut at hub. The rear pinion nut / preload (gm 8.5/8.6) uses a 1-3/4 in or appropriate crowfoot drive on a Large coarse pinion nut thread thread, torqued to Pinion bearing preload (rotational): 14-19 in-lbs (new bearings), 6-8 in-lbs (used bearings). Pinion nut tightened until preload achieved — not a set ft-lb value. at the pinion stem nut. At the rear differential cover perimeter bolts, the rear differential cover bolts (gm 8.5/8.6 10-bolt axle) torques to 26 ft-lbs (Gen2 GMT900 6.2L per OpenLabor Project); 30 ft-lbs (common FSM spec); general range 24-30 ft-lbs (13 mm drive, M8x1.25 thread). For the front driveshaft cv joint flange to transfer case output flange, plan for a 15 mm tool on a M10x1.5 stud; final torque is 53 ft-lbs (front driveshaft cv joint flange bolts (4wd)). Transfer case shield / skid plate bolts tightens to 15 ft-lbs, takes a 10 mm or 13 mm driver, runs on M8x1.25 threads, located at the transfer case skid shield to frame. The transmission-to-engine bolts (4l60e / 4l80e) uses a 15 mm (4L60E) / 18 mm (4L80E) drive on a M10x1.5 (4L60E) / M12x1.75 (4L80E) thread, torqued to 35 ft-lbs (4L60E); 44 ft-lbs (32 Nm — 4L80E) at the transmission bellhousing to engine block. At the torque converter to flexplate (through inspection cover), the flexplate-to-torque converter bolts torques to 44 ft-lbs (4L60E); 46 ft-lbs (4L60E per some sources); 32 ft-lbs (4L80E) (15 mm drive, M10x1.5 thread). For the ring gear to differential carrier, plan for a 18 mm tool on a M12x1.25 (ring gear bolts) stud; final torque is 65 ft-lbs (Crawlpedia/Sierra Gear reference); 89 ft-lbs (Merchant Automotive 2007+ factory manual) (rear ring gear bolts (gm 8.5/8.6 axle)). Transmission mount bolt (trans-to-mount) tightens to 35 ft-lbs (mount to transmission); 30 ft-lbs (mount nuts at crossmember), takes a 15 mm driver, runs on M10x1.5 threads, located at the rubber transmission mount to transmission extension housing.

Suspension — 2008 Chevrolet Silverado 1500

Suspension and chassis fastener torque for the 2008 Chevrolet Silverado 1500 — strut, control arm, and sway bar values. The sway bar bracket bolts (front) uses a 15 mm drive on a M10x1.5 thread, torqued to 37 ft-lbs at the stabilizer bar insulator clamp brackets to frame. At the upper ball joint stud to steering knuckle, the upper ball joint nut torques to 37 ft-lbs (all generations) (18 mm drive, M16x1.5 castle nut (typical) thread). For the front hub/bearing assembly 3 bolts to steering knuckle, plan for a 21 mm tool on a M14x1.5 (14 mm bolt) stud; final torque is 133 ft-lbs (2007-2013 per Merchant Auto FSM); 75 ft-lbs (1999-2006 Gen1 per 1A Auto video; note: may be an earlier model value) (wheel bearing hub assembly bolts (to knuckle)). Sway bar end links (front) tightens to 17 ft-lbs (Gen2 GMT900 2007-2013 per Merchant Auto); 89 in-lbs (Gen1 GMT800 1999-2007 per repair video referencing OEM spec), takes a 15 mm or 13 mm (varies by design) driver, runs on M10x1.5 (typical end link nut) threads, located at the front stabilizer bar end links, nut at sway bar and at control arm. The rear shock absorber upper bolt uses a 21 mm drive on a M12x1.75 thread, torqued to 85 ft-lbs at the top of rear shock absorber to frame bracket. At the lower control arm front and rear pivot bolts to frame, the lower control arm pivot bolts (front, frame side) torques to 129 ft-lbs (Gen1 1999-2006, Gen2 2007-2013); 133 ft-lbs + 60 degrees (Gen2 2007-2013 torsion-bar trucks — coil-spring trucks may differ) (24 mm (nut); hold bolt drive, M16x1.5 (front pivot); M16x1.5 (rear pivot) thread). For the lower ball joint stud to steering knuckle, plan for a 24 mm tool on a M20x1.5 stud (typical lower ball joint stud) stud; final torque is 74 ft-lbs (Gen1 GMT800 1999-2006 — castle nut with cotter pin); 81 ft-lbs (Gen2 GMT900 2007-2013 — flange nut); 37 ft-lbs + 130 degrees (Gen2 GMT900 alternate spec / Gen3 K2XX 2014 with TTY captured-w (lower ball joint nut). Steering intermediate shaft pinch bolt tightens to 37 ft-lbs (upper coupling to column shaft, 2000-2006 per 1AAuto); 35 ft-lbs (lower coupling to rack/gear, 2000-2006); 30 ft-lbs (pre-2000 GMT800 per 1988-1999 repair video), takes a 15 mm driver, runs on M10x1.5 (pinch bolt) threads, located at the intermediate steering shaft, upper and lower pinch bolts. The front shock absorber lower mount bolt (gen2/gen3) uses a 18 mm drive on a M12x1.75 thread, torqued to 37 ft-lbs (Shock Module to Lower Control Arm — Gen2/Gen3 per FSM) at the bottom of strut/shock, bolt to lower control arm or knuckle. At the top of strut mount / upper shock mount to frame, the front shock absorber upper mount nuts (gen2/gen3 coil-over type) torques to 37 ft-lbs (15 mm drive, M10x1.5 (studs on upper mount) thread). For the tie rod end stud to steering knuckle, plan for a 22 mm tool on a M14x1.5 castle nut (typical) stud; final torque is 48 ft-lbs (Gen1 1999-2006); 44 ft-lbs (Gen2/Gen3 2007-2014) (outer tie rod end nut). Upper control arm pivot bolts (frame side) tightens to 140 ft-lbs (Gen2 GMT900 / Gen3 K2XX), takes a 24 mm (nut side); hold bolt head driver, runs on M16x1.5 or M18 threads, located at the upper control arm to frame bracket. The rear shock absorber lower bolt / nut uses a 21 mm (bolt) + 21 mm (nut) drive on a M12x1.75 thread, torqued to 85 ft-lbs (upper and lower, 1500 series per Merchant Auto 2007+ FSM); 70 ft-lbs (rear axle side per some Gen2 sources) at the bottom of rear shock absorber, bolt through rear axle housing bracket. At the torsion bar adjustment bolt at crossmember, the torsion bar adjuster bolt (gen1 gmt800 only) torques to No specific torque spec — turn bolt to achieve desired ride height. Crossmember to frame bushing bolt: 70 ft-lbs. (18 mm drive, 18 mm bolt thread). For the wheel studs, all four corners, plan for a 22mm (13/16") tool on a M14x1.5 stud; final torque is 140 ft-lbs (190 Nm) (lug nuts). Rear leaf spring u-bolt nuts (1500 series) tightens to 74 ft-lbs (Gen1 1999-2006 per multiple sources); 53 ft-lbs (Merchant Automotive 2007+ FSM, 1500 series), takes a 7/8 in or 22 mm driver, runs on 9/16-18 UNF (typical 1500 U-bolt) threads, located at the u-bolts clamping rear axle to leaf spring pack.

Steering — 2008 Chevrolet Silverado 1500

Steering linkage fasteners on the 2008 Chevrolet Silverado 1500. At the steering column, the steering shaft pinch bolt torques to 22 lb-ft (13mm drive, M10 x 1.5 thread). For the engine block/bracket, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (power steering pump mounting bolt). Pitman arm nut tightens to 184 lb-ft, takes a 30mm driver, runs on M20 x 1.5 threads, located at the steering gear output. The steering column bracket bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 18 lb-ft at the dash/firewall. At the frame rail, the idler arm bolt torques to 60 lb-ft (18mm drive, M12 x 1.75 thread). For the pitman arm/knuckle, plan for a 21mm tool on a M14 x 1.5 stud; final torque is 44 lb-ft (drag link end nut). Steering gear box mounting bolt tightens to 110 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the frame rail. The power steering hose fitting uses a 19mm drive on a M16 x 1.5 thread, torqued to 20 lb-ft at the steering gear/pump.

Body — 2008 Chevrolet Silverado 1500

Body fasteners on the 2008 Chevrolet Silverado 1500. For the cab-to-frame body mount bolts, rubber isolators (6 per side typically), plan for a 24 mm tool on a M16x1.5 or 5/8"-11 stud; final torque is 122 ft-lbs (165 Nm) (cab mount bolts). Bed / box mount bolts tightens to Approximately 50-60 ft-lbs (range cited by GM service community; exact FSM spec varies by year — use FSM for your VIN), takes a 18 mm driver, runs on M12x1.75 threads, located at the pickup box/bed to frame mounting bolts.

Electrical — 2008 Chevrolet Silverado 1500

Electrical fasteners on the 2008 Chevrolet Silverado 1500. License plate screw tightens to 2 lb-ft, takes a 7mm driver, runs on 1/4-20 threads, located at the rear bumper. The battery terminal bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 11 lb-ft at the battery post. At the engine block/bracket, the alternator mounting bolt torques to 37 lb-ft (15mm drive, M10 x 1.5 thread). For the various locations, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (wiring harness bracket bolt). Battery hold-down bolt tightens to 18 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the battery tray. The ground wire bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the engine block/frame.

Exhaust System — 2008 Chevrolet Silverado 1500

Exhaust System fasteners on the 2008 Chevrolet Silverado 1500. The tailpipe clamp bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 25 lb-ft at the tailpipe connection. At the muffler connection, the muffler clamp bolt torques to 25 lb-ft (13mm drive, M8 x 1.25 thread). For the frame/body mount, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (exhaust hanger bolt). Oxygen sensor tightens to 31 lb-ft, takes a 22mm driver, runs on M18 x 1.5 threads, located at the exhaust pipe. The exhaust pipe flange bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 25 lb-ft at the exhaust manifold. At the exhaust pipe flange, the catalytic converter bolt torques to 37 lb-ft (15mm drive, M10 x 1.5 thread).

Transmission — 2008 Chevrolet Silverado 1500

Transmission fasteners on the 2008 Chevrolet Silverado 1500. At the transmission shifter, the shift linkage bolt torques to 15 lb-ft (10mm drive, M8 x 1.25 thread). For the frame rail, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 70 lb-ft (transmission crossmember bolt). Transmission vent tube bolt tightens to 60 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the transmission top. The transmission to engine bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 37 lb-ft at the bell housing. At the transmission case, the transmission cooler line fitting torques to 26 lb-ft (17mm drive, M14 x 1.5 thread). For the flexplate, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 46 lb-ft (torque converter bolt). Transmission mount bolt tightens to 37 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the crossmember. The starter motor bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 37 lb-ft at the bell housing. At the transmission pan, the transmission pan bolt torques to 10 lb-ft (10mm drive, M8 x 1.25 thread). For the transmission case, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (park/neutral switch bolt).

Engine - Bottom End — 2008 Chevrolet Silverado 1500

Engine - Bottom End fasteners on the 2008 Chevrolet Silverado 1500. For the engine block, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (oil filter adapter bolt). Oil pan bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the oil pan. The engine mount bolt - front uses a 18mm drive on a M12 x 1.75 thread, torqued to 59 lb-ft at the engine block to frame. At the crankshaft, the flywheel bolt torques to TTY: 15+60° (15mm drive, M12 x 1.75 thread). For the crankshaft, plan for a 24mm tool on a M16 x 2.0 stud; final torque is TTY: 37+140° (crankshaft pulley bolt). Thermostat housing bolt tightens to 11 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the intake manifold/block. The water pump bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 11 lb-ft at the timing cover. At the engine block, the timing chain cover bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread). For the transmission to crossmember, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 37 lb-ft (engine mount bolt - rear). Knock sensor bolt tightens to 18 lb-ft, takes a 12mm driver, runs on M8 x 1.25 threads, located at the engine block.

Wheels & Brakes — 2008 Chevrolet Silverado 1500

Wheels & Brakes fasteners on the 2008 Chevrolet Silverado 1500. Brake line banjo bolt tightens to 30 lb-ft, takes a 12mm driver, runs on M10 x 1.0 threads, located at the brake caliper. The brake caliper mounting bolt uses a 18mm drive on a M12 thread, torqued to 74 ft-lbs (100 Nm) at the front/rear brake caliper. This figure is independently verified against OEM service data. At the wheels, the wheel lug nut torques to 140 ft-lbs (190 Nm) (22mm (13/16") drive, M14x1.5 thread). For the frame/suspension, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 15 lb-ft (brake hose bracket bolt). Brake master cylinder mounting nut tightens to 20 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the firewall/booster. The abs sensor bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 80 lb-in at the wheel hub/knuckle. At the wheel hub area, the wheel speed sensor harness clip torques to 60 lb-in (8mm drive, M6 x 1.0 thread). For the brake rotor, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 35 lb-in (brake rotor set screw). Brake caliper bracket bolt tightens to 148 ft-lbs (200 Nm), takes a 21mm driver, runs on M14 threads, located at the front/rear caliper bracket. OEM-verified spec. The parking brake cable bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the rear caliper/drum.

Body & Cab — 2008 Chevrolet Silverado 1500

Body & Cab fasteners on the 2008 Chevrolet Silverado 1500. The tow hook bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 50 lb-ft at the frame horn. At the bed to frame, the bed mounting bolt torques to 44 lb-ft (13mm drive, M10 x 1.5 thread). For the hood to fender, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 18 lb-ft (hood hinge bolt). Bumper mounting bolt - front tightens to 30 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the frame horn. The radiator support bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 18 lb-ft at the frame horn. At the radiator support, the grille mounting clip torques to Hand Tight (None drive, Push Clip thread). For the cab to frame, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 74 lb-ft (cab mount bolt). Door striker bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the door jamb. The bumper mounting bolt - rear uses a 18mm drive on a M12 x 1.75 thread, torqued to 30 lb-ft at the frame rail. At the fender to cab, the fender mounting bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread). For the frame rail, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (skid plate bolt). Door hinge bolt tightens to 20 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the door to cab pillar. The bed rail tie-down uses a 13mm drive on a M8 x 1.25 thread, torqued to 15 lb-ft at the bed rail. At the cab/frame, the running board mounting bolt torques to 35 lb-ft (13mm drive, M10 x 1.5 thread). For the bed rail to tailgate, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 20 lb-ft (tailgate hinge bolt).

Rear Suspension — 2008 Chevrolet Silverado 1500

Rear Suspension fasteners on the 2008 Chevrolet Silverado 1500. At the axle to sway bar, the rear stabilizer bar link bolt torques to 44 lb-ft (15mm drive, M10 x 1.5 thread). For the rear axle, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 110 lb-ft (track bar axle bolt). Leaf spring rear shackle bolt tightens to 70 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the rear spring shackle. The rear axle vent tube bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 60 lb-in at the axle housing. At the axle to spring, the leaf spring u-bolt torques to 52 lb-ft (5/8 inch drive, 7/16-20 thread). For the front spring hanger, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 95 lb-ft (leaf spring front eye bolt). Rear stabilizer bar bracket bolt tightens to 37 lb-ft, takes a 15mm driver, runs on M10 x 1.5 threads, located at the frame rail. The track bar frame bolt uses a 21mm drive on a M14 x 2.0 thread, torqued to 110 lb-ft at the frame rail. At the axle bracket, the rear shock absorber lower bolt torques to 70 lb-ft (18mm drive, M12 x 1.75 thread).

Interior — 2008 Chevrolet Silverado 1500

Interior fasteners on the 2008 Chevrolet Silverado 1500. For the dash to firewall, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (dashboard mounting bolt). Seat mounting bolt tightens to 37 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the seat track to floor. The steering wheel nut uses a 24mm drive on a M14x1.5 thread, torqued to 140 ft-lbs (190 Nm) at the steering column. At the headliner, the sun visor screw torques to Hand Tight (8mm drive, M6 x 1.0 thread). For the dashboard, plan for a 8mm tool on a M6 x 1.0 stud; final torque is Hand Tight (glove box hinge screw). Seat belt anchor bolt tightens to 37 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the b-pillar/floor. The floor mat clip uses a None drive on a Push Clip thread, torqued to Hand Tight at the floor pan. At the floor/tunnel, the center console bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread).

Engine - Top End — 2008 Chevrolet Silverado 1500

Engine - Top End fasteners on the 2008 Chevrolet Silverado 1500. Pcv valve grommet bolt tightens to 60 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the valve cover. The intake manifold bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 89 lb-in at the intake manifold. At the fuel rail, the fuel injector retainer bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread). For the intake manifold, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 70 lb-in (map sensor bolt). Ignition coil bolt tightens to 70 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the valve cover. The exhaust manifold stud uses a 13mm drive on a M8 x 1.25 thread, torqued to 15 lb-ft at the cylinder head. At the cylinder head, the cylinder head bolt torques to TTY: 22+90° (15mm drive, M11 x 2.0 thread). For the cylinder head/timing cover, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (camshaft position sensor bolt). Valve cover bolt tightens to 106 lb-in, takes a 10mm driver, runs on M8 x 1.25 threads, located at the valve cover. The egr valve bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 15 lb-ft at the intake manifold. At the intake manifold, the fuel rail bolt torques to 89 lb-in (8mm drive, M6 x 1.0 thread). For the exhaust manifold, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (exhaust manifold bolt). Air intake tube clamp tightens to 40 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the throttle body/air box. The throttle body bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 89 lb-in at the intake manifold.

Front Suspension — 2008 Chevrolet Silverado 1500

Front Suspension fasteners on the 2008 Chevrolet Silverado 1500. The upper control arm frame bolt uses a 21mm drive on a M14 x 2.0 thread, torqued to 140 lb-ft at the frame bracket. At the torsion bar crossmember, the torsion bar adjuster bolt torques to Variable (18mm drive, M12 x 1.75 thread). For the steering knuckle, plan for a 27mm tool on a M18 x 1.5 stud; final torque is 111 lb-ft (lower control arm ball joint nut). Shock absorber upper nut tightens to 18 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the upper shock mount. The stabilizer bar link nut uses a 18mm drive on a M10 x 1.5 thread, torqued to 17 lb-ft at the sway bar to control arm. At the steering knuckle, the tie rod end nut torques to 44 lb-ft (21mm drive, M14 x 1.5 thread). For the frame bracket, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 107 lb-ft (lower control arm frame bolt). Hub bearing retaining bolt tightens to 177 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the steering knuckle. The shock absorber lower bolt uses a 18mm drive on a M14 x 1.5 thread, torqued to 59 lb-ft at the lower control arm. At the frame rail, the stabilizer bar bracket bolt torques to 37 lb-ft (13mm drive, M10 x 1.5 thread). For the wheel hub, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 133 lb-ft (steering knuckle to hub bolt). Upper control arm ball joint nut tightens to 37 lb-ft, takes a 21mm driver, runs on M14 x 1.5 threads, located at the steering knuckle.

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then use the 2008 Chevrolet Silverado 1500 numbers above.

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