1999 Chevrolet Silverado 1500 Lug Nut Torque & Bolt Specs

The 1999 Chevrolet Silverado 1500 lug nut torque is TTY: 15+60°, tightened with a 15mm socket on M12 x 1.75 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: TTY: 15+60° · Socket size: 15mm · Thread: M12 x 1.75.

This page is the OEM-referenced fastener summary for the 1999 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 1999 Chevrolet Silverado 1500

Repair guidance for this model year

Heads up for 1999 Chevrolet Silverado 1500 owners: Vehicles this age frequently have seized fasteners due to thread corrosion. Apply penetrating oil (PB Blaster, Kroil) 24 hours before any wrenching, and have a thread chaser on hand. Lug studs are particularly prone to thread damage at this age; if a nut spins on without engaging, the stud is stretched and must be replaced before the wheel goes back on.

Tools you will need

Frequently asked questions

What is the lug nut torque on a 1999 Chevrolet Silverado 1500?

The OEM-specified lug-nut torque for the 1999 Chevrolet Silverado 1500 is TTY: 15+60°, using a 15mm socket on M12 x 1.75 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 1999 Chevrolet Silverado 1500 lug nuts?

The 1999 Chevrolet Silverado 1500 uses a 15mm 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 1999 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.

→ 1999 Chevrolet Silverado 1500 oil drain plug torque & size

→ 1999 Chevrolet Silverado 1500 suspension & steering torque specs (control arm, ball joint, tie rod)

→ 1999 Chevrolet Silverado 1500 engine & transmission mount torque specs

All 186 1999 Chevrolet Silverado 1500 fastener specs

Per-bolt torque, wrench size, and thread spec for the 1999 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. 5 of the 186 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed June 2026).

Brakes — 1999 Chevrolet Silverado 1500

Brake fasteners on the 1999 Chevrolet Silverado 1500 — caliper bracket, slide pins, and banjo bolt torque follow. Front brake caliper bracket (anchor plate) bolts tightens to 129 ft-lbs (175 Nm), takes a 18mm driver, runs on M14x1.5 or M16x1.5 (18 mm hex head) threads, located at the caliper bracket (anchor plate) bolts to steering knuckle. This figure is independently verified against OEM service data. The abs wheel speed sensor bolt (front) uses a 3/16 in Allen (Gen1); varies Gen2 drive on a 3/16 Allen head thread, torqued 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) at the front abs sensor to wheel bearing hub. At the caliper guide pins / slide pins to caliper bracket, the front caliper slide pin bolts torques to 80 ft-lbs (108 Nm) (18mm drive, M12x1.75 (pin bolt) thread). Confirmed against manufacturer service literature. 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)). Rear drum brake wheel cylinder bolts tightens to 11-17 ft-lbs (typical GM range for wheel cylinder mounting bolts), takes a 13 mm driver, runs on M8x1.25 threads, located at the wheel cylinder to brake backing plate.

Engine — 1999 Chevrolet Silverado 1500

Engine bolt-by-bolt torque for the 1999 Chevrolet Silverado 1500, including the long block, valve covers, and intake. The oil pan bolts — m8 (to block and front cover) uses a 10 mm drive on a M8x1.25 thread, torqued to 18 ft-lbs at the oil pan perimeter bolts, sides and front. At the oil filter mount on engine block or adapter, the oil filter torques to 22 ft-lbs (Oil filter wrench (65 mm or 14-flute cap type) drive, 3/4"-16 (SAE spin-on thread) thread). Confirmed against manufacturer service literature. For the main bearing caps, inner fasteners (m11 hex bolts), plan for a 13 mm tool on a M11x2.0 stud; final torque is Step 1 = 15 ft-lbs; Step 2 = +80 degrees (main bearing cap bolts — inner (gen iii/iv iron block)). 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 cylinder head bolts — m11 (all gen iii ls, gen1/gen2 trucks) uses a 13 mm (M11), 10 mm (M8) drive on a M11x2.0 (long bolts); M8x1.25 (inner small bolts) thread, torqued 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 at the 10x m11 head bolts per head + 5x m8 inner bolts. At the throttle body to intake manifold (4 bolts), the throttle body bolts torques to 106 in-lbs (8.8 ft-lbs) (8 mm drive, M6x1.0 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). Water pump bolts tightens to Step 1 = 11 ft-lbs; Step 2 (final) = 22 ft-lbs, takes a 10 mm driver, runs on M8x1.25 threads, located at the water pump to front engine cover. The ignition coil pack bolts (coil-to-bracket) uses a 8 mm drive on a M6x1.0 thread, torqued to 106 in-lbs (8.8 ft-lbs) at the individual coil mounting bolts to coil bracket on valve cover. 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 block-side of front engine mount bracket, plan for a 15 mm tool on a M10x1.5 stud; final torque is 37 ft-lbs (engine mount stud / bolt to engine block). Engine front cover bolts tightens to 18 ft-lbs, takes a 10 mm driver, runs on M8x1.25 threads, located at the timing chain/front cover to engine block. The 4.8l v8 (lr4) — notes vs 5.3l uses a Same as 5.3L drive on a Same as 5.3L thread, torqued to See all 5.3L entries above — all apply at the all torque specs identical to 5.3l ls. At the alternator mounting to bracket; bracket to block, the alternator (generator) bolts torques to 37 ft-lbs (bracket bolts to block); 18 ft-lbs (generator rear bracket to block); 18 ft-lbs (generator rear bracket to generator) (15 mm / 13 mm drive, M10x1.5 (mounting bolts); M8x1.25 (small bracket bolts) thread). For the front of crankshaft, plan for a 1-1/16 in (27 mm) 12-point socket tool on a M21x1.5 (large crankshaft thread) stud; final torque is 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. (harmonic balancer (crankshaft damper) bolt). 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 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 rocker arms on cylinder head, the rocker arm (valve lifter) bolts torques to 22 ft-lbs (10 mm drive, M8x1.25 thread). For the front of block, cam retainer/thrust plate, plan for a 10 mm or T-30 Torx tool on a M8 stud; final torque is 18 ft-lbs (standard hex bolts); 11 ft-lbs (countersunk Torx/hex bolts) (camshaft retainer plate bolts). Thermostat housing (water inlet) bolts tightens to 11 ft-lbs, takes a 10 mm driver, runs on M8x1.25 threads, located at the thermostat housing/water outlet at front of intake manifold. The intake manifold bolts uses a 8 mm drive on a M8x1.25 thread, torqued to Step 1 = 44 in-lbs; Step 2 = 89 in-lbs (7.4 ft-lbs final) at the lower intake manifold to cylinder heads (composite manifold, 10 bolts). At the connecting rod big-end cap, the connecting rod bolts (second design — most common, 1999+) torques to Step 1 = 15 ft-lbs; Step 2 = +75 degrees (9 mm or T-40 Torx drive, M9x1.25 (bolts have retaining sleeve) thread). For the exhaust manifold to cylinder head, 8 bolts per side, plan for a 10 mm or 13 mm (varies by year — some use Torx) tool on a M8x1.25 stud; final torque is 2-stage: Step 1 = 11 ft-lbs; Step 2 (final) = 18 ft-lbs. (New cylinder head: 11 ft-lbs first pass per some sources.) (exhaust manifold bolts). Power steering pump bolts tightens to 18 ft-lbs (pump to bracket); 18 ft-lbs (bracket to block), takes a 13 mm or 15 mm depending on bolt driver, runs on M8x1.25 threads, located at the power steering pump to bracket / block. 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 valley cover (cam actuator housing cover on top of block between heads), the engine valley cover bolts torques to 18 ft-lbs (10 mm drive, M8x1.25 thread). For the front of camshaft, sprocket retention, plan for a 10 mm tool on a M8 stud; final torque is 26 ft-lbs (camshaft sprocket bolts (3-bolt cam, gen iii ls)).

Drivetrain — 1999 Chevrolet Silverado 1500

Drivetrain and driveline fasteners for the 1999 Chevrolet Silverado 1500 — axle, transmission, and differential plugs. 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 differential cover, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 25 lb-ft (differential cover bolt). Transfer case mounting bolt tightens to 37 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the transmission/transfer case. 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 front driveshaft cv joint flange to transfer case output flange, the front driveshaft cv joint flange bolts (4wd) torques to 53 ft-lbs (15 mm drive, M10x1.5 thread). For the inner cv joint 6-bolt flange to front differential output, plan for a 15 mm tool on a M10x1.5 stud; final torque is 58 ft-lbs (front cv axle shaft inboard flange bolts (4wd)). Rear ring gear bolts (gm 9.5 axle) tightens to 103 ft-lbs (Merchant Automotive FSM), takes a 18 mm driver, runs on M12x1.25 threads, located at the ring gear to carrier, 9.5-in axle. The rear differential cover bolts (gm 9.5 axle) uses a 13 mm or 15 mm drive on a M8x1.25 or M10x1.5 thread, torqued to 30 ft-lbs at the rear differential cover, gen2 trucks with 9.5 axle. At the transfer case case bottom/side, the transfer case drain/fill plug (nvg246 / nvg263) torques to 15 ft-lbs (3/8 in square drive or 24 mm socket drive, 3/8" NPT (pipe thread) or metric depending on case thread). For the outer end of front half-shaft, axle nut at hub, plan for a 35 mm or 36 mm socket tool on a M28x1.5 or 1-5/16"-18 (large spindle nut) stud; final torque is 177 ft-lbs (1999-2009); 188 ft-lbs (2010+) (front wheel hub / axle nut (4wd)). 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 driveshaft center support bearing bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 37 lb-ft at the frame crossmember. At the rubber transmission mount to transmission extension housing, the transmission mount bolt (trans-to-mount) torques to 35 ft-lbs (mount to transmission); 30 ft-lbs (mount nuts at crossmember) (15 mm drive, M10x1.5 thread). For the pinion stem nut, plan for a 1-3/4 in or appropriate crowfoot tool on a Large coarse pinion nut thread stud; final torque is 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. (rear pinion nut / preload (gm 8.5/8.6)). Transfer case drain plug tightens to 25 lb-ft, takes a 15mm driver, runs on M14 x 1.5 threads, located at the transfer case. The differential drain plug uses a 3/8 inch drive on a 3/8-18 NPT thread, torqued to 24 lb-ft at the differential housing. At the rear driveshaft u-joint strap bolts at rear axle pinion flange, the rear driveshaft bolts (to rear pinion/differential flange) torques to 18 ft-lbs (U-joint strap/cap bolts, M8) (13 mm drive, M8x1.25 (strap bolts) thread). For the transfer case to transmission adapter, plan for a 15 mm tool on a M10x1.5 stud; final torque is 37 ft-lbs (adapter bolts and nuts) (transfer case-to-transmission adapter bolts / nuts (nvg246 / nvg263)). Transmission crossmember bolts (to frame) tightens to 85 ft-lbs, takes a 18 mm driver, runs on M12x1.75 threads, located at the transmission crossmember/support bracket to frame rails. The transfer case shield / skid plate bolts uses a 10 mm or 13 mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the transfer case skid shield to frame. At the differential housing, the differential fill plug torques to 24 lb-ft (3/8 inch drive, 3/8-18 NPT thread). For the front differential cover bolts on aam 9.25 ifs axle, plan for a 13 mm tool on a M8x1.25 (cover bolts) stud; final torque is 24 ft-lbs (drain/fill plug); cover bolt torque ~ 30 ft-lbs (same as rear cover) (front differential cover bolts (aam 9.25-in ifs, 4wd)). Rear differential cover bolts (gm 8.5/8.6 10-bolt axle) tightens to 26 ft-lbs (Gen2 GMT900 6.2L per OpenLabor Project); 30 ft-lbs (common FSM spec); general range 24-30 ft-lbs, takes a 13 mm driver, runs on M8x1.25 threads, located at the rear differential cover perimeter bolts. The driveshaft u-joint strap bolt uses a 1/2 inch drive on a 5/16-18 thread, torqued to 15 lb-ft at the driveshaft yoke. At the ring gear to differential carrier, the rear ring gear bolts (gm 8.5/8.6 axle) torques to 65 ft-lbs (Crawlpedia/Sierra Gear reference); 89 ft-lbs (Merchant Automotive 2007+ factory manual) (18 mm drive, M12x1.25 (ring gear bolts) thread).

Suspension — 1999 Chevrolet Silverado 1500

Suspension and chassis fastener torque for the 1999 Chevrolet Silverado 1500 — strut, control arm, and sway bar values. 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). 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 front shock absorber upper mount nuts (gen2/gen3 coil-over type) uses a 15 mm drive on a M10x1.5 (studs on upper mount) thread, torqued to 37 ft-lbs at the top of strut mount / upper shock mount to frame. At the tie rod end stud to steering knuckle, the outer tie rod end nut torques to 48 ft-lbs (Gen1 1999-2006); 44 ft-lbs (Gen2/Gen3 2007-2014) (22 mm drive, M14x1.5 castle nut (typical) thread). For the torsion bar adjustment bolt at crossmember, plan for a 18 mm tool on a 18 mm bolt stud; final torque is No specific torque spec — turn bolt to achieve desired ride height. Crossmember to frame bushing bolt: 70 ft-lbs. (torsion bar adjuster bolt (gen1 gmt800 only)). Sway bar bracket bolts (front) tightens to 37 ft-lbs, takes a 15 mm driver, runs on M10x1.5 threads, located at the stabilizer bar insulator clamp brackets to frame. The lower control arm pivot bolts (front, frame side) uses a 24 mm (nut); hold bolt drive on a M16x1.5 (front pivot); M16x1.5 (rear pivot) thread, torqued 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) at the lower control arm front and rear pivot bolts to frame. At the front hub/bearing assembly 3 bolts to steering knuckle, the wheel bearing hub assembly bolts (to knuckle) torques to 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) (21 mm drive, M14x1.5 (14 mm bolt) 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). Upper ball joint nut tightens to 37 ft-lbs (all generations), takes a 18 mm driver, runs on M16x1.5 castle nut (typical) threads, located at the upper ball joint stud to steering knuckle. The rear leaf spring u-bolt nuts (1500 series) uses a 7/8 in or 22 mm drive on a 9/16-18 UNF (typical 1500 U-bolt) thread, torqued to 74 ft-lbs (Gen1 1999-2006 per multiple sources); 53 ft-lbs (Merchant Automotive 2007+ FSM, 1500 series) at the u-bolts clamping rear axle to leaf spring pack. At the bottom of strut/shock, bolt to lower control arm or knuckle, the front shock absorber lower mount bolt (gen2/gen3) torques to 37 ft-lbs (Shock Module to Lower Control Arm — Gen2/Gen3 per FSM) (18 mm drive, M12x1.75 thread). For the intermediate steering shaft, upper and lower pinch bolts, plan for a 15 mm tool on a M10x1.5 (pinch bolt) stud; final torque is 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) (steering intermediate shaft pinch bolt). Rear shock absorber lower bolt / nut tightens to 85 ft-lbs (upper and lower, 1500 series per Merchant Auto 2007+ FSM); 70 ft-lbs (rear axle side per some Gen2 sources), takes a 21 mm (bolt) + 21 mm (nut) driver, runs on M12x1.75 threads, located at the bottom of rear shock absorber, bolt through rear axle housing bracket. The upper control arm pivot bolts (frame side) uses a 24 mm (nut side); hold bolt head drive on a M16x1.5 or M18 thread, torqued to 140 ft-lbs (Gen2 GMT900 / Gen3 K2XX) at the upper control arm to frame bracket.

Steering — 1999 Chevrolet Silverado 1500

Steering linkage fasteners on the 1999 Chevrolet Silverado 1500. 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 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). 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 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. 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).

Body — 1999 Chevrolet Silverado 1500

Body fasteners on the 1999 Chevrolet Silverado 1500. The cab mount bolts uses a 24 mm drive on a M16x1.5 or 5/8"-11 thread, torqued to 122 ft-lbs (165 Nm) at the cab-to-frame body mount bolts, rubber isolators (6 per side typically). At the pickup box/bed to frame mounting bolts, the bed / box mount bolts torques to Approximately 50-60 ft-lbs (range cited by GM service community; exact FSM spec varies by year — use FSM for your VIN) (18 mm drive, M12x1.75 thread).

Electrical — 1999 Chevrolet Silverado 1500

Electrical fasteners on the 1999 Chevrolet Silverado 1500. At the battery tray, the battery hold-down bolt torques to 18 lb-ft (13mm drive, M8 x 1.25 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 terminal bolt tightens to 11 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the battery post. The alternator mounting bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 37 lb-ft at the engine block/bracket. At the rear bumper, the license plate screw torques to 2 lb-ft (7mm drive, 1/4-20 thread). For the engine block/frame, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (ground wire bolt).

Engine - Bottom End — 1999 Chevrolet Silverado 1500

Engine - Bottom End fasteners on the 1999 Chevrolet Silverado 1500. For the oil pan, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (oil pan 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 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 engine block, the knock sensor bolt torques to 18 lb-ft (12mm drive, M8 x 1.25 thread). For the timing cover, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 11 lb-ft (water pump bolt). Flywheel bolt tightens to TTY: 15+60°, takes a 15mm driver, runs on M12 x 1.75 threads, located at the crankshaft. The crankshaft pulley bolt uses a 24mm drive on a M16 x 2.0 thread, torqued to TTY: 37+140° at the crankshaft. At the oil pan, the oil drain plug torques to 18 ft-lbs (25 Nm) (15mm drive, M12x1.75 thread). For the engine block/timing cover, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (crankshaft position sensor bolt). Timing chain cover bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the engine block. The engine mount bolt - rear uses a 18mm drive on a M12 x 1.75 thread, torqued to 37 lb-ft at the transmission to crossmember. At the engine block, the oil filter adapter bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread).

Rear Suspension — 1999 Chevrolet Silverado 1500

Rear Suspension fasteners on the 1999 Chevrolet Silverado 1500. Track bar frame bolt tightens to 110 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the frame rail. The leaf spring rear shackle bolt uses a 21mm drive on a M14 x 2.0 thread, torqued to 70 lb-ft at the rear spring shackle. At the frame rail, the rear shock absorber upper bolt torques to 70 lb-ft (18mm drive, M12 x 1.75 thread). For the frame rail, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (rear stabilizer bar bracket bolt). Leaf spring u-bolt tightens to 52 lb-ft, takes a 5/8 inch driver, runs on 7/16-20 threads, located at the axle to spring. 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 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 front eye bolt tightens to 95 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the front spring hanger. The rear shock absorber lower bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 70 lb-ft at the axle bracket.

Front Suspension — 1999 Chevrolet Silverado 1500

Front Suspension fasteners on the 1999 Chevrolet Silverado 1500. 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 frame bracket, the lower control arm frame bolt torques to 107 lb-ft (21mm drive, M14 x 2.0 thread). For the lower control arm, plan for a 18mm tool on a M14 x 1.5 stud; final torque is 59 lb-ft (shock absorber lower bolt). Torsion bar adjuster bolt tightens to Variable, takes a 18mm driver, runs on M12 x 1.75 threads, located at the torsion bar crossmember. The hub bearing retaining bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 177 lb-ft at the steering knuckle. At the steering knuckle, the lower control arm ball joint nut torques to 111 lb-ft (27mm drive, M18 x 1.5 thread). For the frame bracket, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 140 lb-ft (upper control arm frame 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. The shock absorber upper nut uses a 13mm drive on a M10 x 1.5 thread, torqued to 18 lb-ft at the upper shock mount. At the frame rail, the stabilizer bar bracket bolt torques to 37 lb-ft (13mm drive, M10 x 1.5 thread). For the steering knuckle, plan for a 21mm tool on a M14 x 1.5 stud; final torque is 44 lb-ft (tie rod end nut). Steering knuckle to hub bolt tightens to 133 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the wheel hub.

Engine - Top End — 1999 Chevrolet Silverado 1500

Engine - Top End fasteners on the 1999 Chevrolet Silverado 1500. 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 10mm tool on a M8 x 1.25 stud; final torque is 15 lb-ft (egr valve bolt). Spark plug tightens to 15 ft-lbs (20 Nm), takes a 16mm driver, runs on M14x1.25 threads, located at the cylinder head. The pcv valve grommet bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 60 lb-in at the valve cover. At the valve cover, the ignition coil bolt torques to 70 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). Throttle body bolt tightens to 89 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the intake manifold. The exhaust manifold bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the exhaust manifold. At the throttle body/air box, the air intake tube clamp torques to 40 lb-in (8mm drive, M6 x 1.0 thread). For the intake manifold, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 89 lb-in (intake manifold bolt). Camshaft position sensor bolt tightens to 80 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the cylinder head/timing cover. The cylinder head bolt uses a 15mm drive on a M11 x 2.0 thread, torqued to TTY: 22+90° at the cylinder head. At the valve cover, the valve cover bolt torques to 106 lb-in (10mm drive, M8 x 1.25 thread). For the cylinder head, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 15 lb-ft (exhaust manifold stud). Fuel rail bolt tightens to 89 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the intake manifold.

Body & Cab — 1999 Chevrolet Silverado 1500

Body & Cab fasteners on the 1999 Chevrolet Silverado 1500. For the bed to frame, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 44 lb-ft (bed mounting bolt). Hood hinge bolt tightens to 18 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the hood to fender. The bumper mounting bolt - front uses a 18mm drive on a M12 x 1.75 thread, torqued to 30 lb-ft at the frame horn. At the cab/frame, the running board mounting bolt torques to 35 lb-ft (13mm drive, M10 x 1.5 thread). For the radiator support, plan for a None tool on a Push Clip stud; final torque is Hand Tight (grille mounting clip). 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 fender mounting bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the fender to cab. At the bed rail to tailgate, the tailgate hinge bolt torques to 20 lb-ft (13mm drive, M8 x 1.25 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). Bed rail tie-down tightens to 15 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the bed rail. 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 frame horn, the radiator support bolt torques to 18 lb-ft (13mm drive, M10 x 1.5 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 striker bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the door jamb. The tow hook bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 50 lb-ft at the frame horn.

Wheels & Brakes — 1999 Chevrolet Silverado 1500

Wheels & Brakes fasteners on the 1999 Chevrolet Silverado 1500. 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 front/rear brake caliper, the brake caliper mounting bolt torques to 129 ft-lbs (175 Nm) (18mm drive, M12x1.75 thread). Confirmed against manufacturer service literature. For the rear caliper/drum, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (parking brake cable bolt). Brake hose bracket bolt tightens to 15 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the frame/suspension. The wheel speed sensor harness clip uses a 8mm drive on a M6 x 1.0 thread, torqued to 60 lb-in at the wheel hub area. At the front/rear caliper bracket, the brake caliper bracket bolt torques to 129 ft-lbs (175 Nm) (18mm drive, M14x2.0 thread). This figure is independently verified against OEM service data. For the wheels, plan for a 22mm (13/16") tool on a M14x1.5 stud; final torque is 140 ft-lbs (190 Nm) (wheel lug nut). 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 rotor set screw uses a 10mm drive on a M8 x 1.25 thread, torqued to 35 lb-in at the brake rotor.

Transmission — 1999 Chevrolet Silverado 1500

Transmission fasteners on the 1999 Chevrolet Silverado 1500. The transmission crossmember bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 70 lb-ft at the frame rail. At the transmission case, the transmission cooler line fitting torques to 26 lb-ft (17mm drive, M14 x 1.5 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). 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 shifter, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 15 lb-ft (shift linkage 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 torque converter bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 46 lb-ft at the flexplate. At the bell housing, the transmission to engine bolt torques to 37 lb-ft (18mm drive, M12 x 1.75 thread).

Exhaust System — 1999 Chevrolet Silverado 1500

Exhaust System fasteners on the 1999 Chevrolet Silverado 1500. At the tailpipe connection, the tailpipe clamp bolt torques to 25 lb-ft (13mm drive, M8 x 1.25 thread). For the exhaust manifold, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 25 lb-ft (exhaust pipe flange bolt). Exhaust hanger bolt tightens to 18 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the frame/body mount. The muffler clamp bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 25 lb-ft at the muffler connection. At the exhaust pipe, the oxygen sensor torques to 31 lb-ft (22mm drive, M18 x 1.5 thread). For the exhaust pipe flange, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (catalytic converter bolt).

Interior — 1999 Chevrolet Silverado 1500

Interior fasteners on the 1999 Chevrolet Silverado 1500. For the steering column, plan for a 24mm tool on a M14x1.5 stud; final torque is 140 ft-lbs (190 Nm) (steering wheel nut). 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 sun visor screw uses a 8mm drive on a M6 x 1.0 thread, torqued to Hand Tight at the headliner. At the floor/tunnel, the center console bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread). For the seat track to floor, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (seat mounting bolt). Floor mat clip tightens to Hand Tight, takes a None driver, runs on Push Clip threads, located at the floor pan. The dashboard mounting bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the dash to firewall. At the dashboard, the glove box hinge screw torques to Hand Tight (8mm drive, M6 x 1.0 thread).

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 1999 Chevrolet Silverado 1500 numbers above.

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