2012 Chevrolet Silverado 2500 Hd Lug Nut Torque & Bolt Specs

The 2012 Chevrolet Silverado 2500 Hd lug nut torque is 140 ft-lbs (190 Nm), tightened with a 21mm 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: 21mm · Thread: M14x1.5.

This page is the OEM-referenced fastener summary for the 2012 Chevrolet Silverado 2500 Hd. 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 2012 Chevrolet Silverado 2500 Hd

Repair guidance for this model year

For 2012 model-year work: This era introduced widespread torque-to-yield (TTY) bolts on head, main, and crank pulley fasteners. TTY bolts stretch permanently when torqued and must not be reused — the spec calls for a fresh bolt every time. Always verify TTY status against the FSM before reassembly.

Tools you will need

Frequently asked questions

What is the lug nut torque on a 2012 Chevrolet Silverado 2500 Hd?

The OEM-specified lug-nut torque for the 2012 Chevrolet Silverado 2500 Hd is 140 ft-lbs (190 Nm), using a 21mm 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 2012 Chevrolet Silverado 2500 Hd lug nuts?

The 2012 Chevrolet Silverado 2500 Hd uses a 21mm 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 2012 Chevrolet Silverado 2500 Hd 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 2500 Hd years

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

→ 2012 Chevrolet Silverado 2500 Hd oil drain plug torque & size

→ 2012 Chevrolet Silverado 2500 Hd suspension & steering torque specs (control arm, ball joint, tie rod)

→ 2012 Chevrolet Silverado 2500 Hd engine & transmission mount torque specs

All 120 2012 Chevrolet Silverado 2500 Hd fastener specs

Per-bolt torque, wrench size, and thread spec for the 2012 Chevrolet Silverado 2500 Hd, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both.

Drivetrain — 2012 Chevrolet Silverado 2500 Hd

Drivetrain and driveline fasteners for the 2012 Chevrolet Silverado 2500 Hd — axle, transmission, and differential plugs. 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 differential housing, the differential drain plug torques to 24 lb-ft (3/8 inch drive, 3/8-18 NPT thread). For the transmission/transfer case, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 37 lb-ft (transfer case mounting bolt). 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 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 differential cover, the differential cover bolt torques to 25 lb-ft (13mm drive, M10 x 1.5 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 fill plug). Driveshaft center support bearing bolt tightens to 37 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the frame crossmember.

Steering — 2012 Chevrolet Silverado 2500 Hd

Steering linkage fasteners on the 2012 Chevrolet Silverado 2500 Hd. At the dash/firewall, the steering column bracket bolt torques to 18 lb-ft (13mm drive, M10 x 1.5 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). Power steering hose fitting tightens to 20 lb-ft, takes a 19mm driver, runs on M16 x 1.5 threads, located at the steering gear/pump. The idler arm bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 60 lb-ft at the frame rail. At the steering gear output, the pitman arm nut torques to 184 lb-ft (30mm drive, M20 x 1.5 thread). For the steering column, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 22 lb-ft (steering shaft pinch bolt). 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 pump mounting bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 37 lb-ft at the engine block/bracket.

Electrical — 2012 Chevrolet Silverado 2500 Hd

Electrical fasteners on the 2012 Chevrolet Silverado 2500 Hd. For the rear bumper, plan for a 7mm tool on a 1/4-20 stud; final torque is 2 lb-ft (license plate screw). Wiring harness bracket bolt tightens to 80 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the various locations. 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 battery tray, the battery hold-down bolt torques to 18 lb-ft (13mm drive, M8 x 1.25 thread). For the battery post, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 11 lb-ft (battery terminal bolt). Ground wire bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the engine block/frame.

Body & Cab — 2012 Chevrolet Silverado 2500 Hd

Body & Cab fasteners on the 2012 Chevrolet Silverado 2500 Hd. Tailgate hinge bolt tightens to 20 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the bed rail to tailgate. The running board mounting bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 35 lb-ft at the cab/frame. At the bed rail, the bed rail tie-down torques to 15 lb-ft (13mm drive, M8 x 1.25 thread). For the door to cab pillar, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 20 lb-ft (door hinge bolt). Bed mounting bolt tightens to 44 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the bed to frame. The door striker bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the door jamb. At the radiator support, the grille mounting clip torques to Hand Tight (None drive, Push Clip 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). Fender mounting bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the fender to cab. 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 hood to fender, the hood hinge bolt torques to 18 lb-ft (13mm drive, M10 x 1.5 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). 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 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 frame horn, the radiator support bolt torques to 18 lb-ft (13mm drive, M10 x 1.5 thread).

Wheels & Brakes — 2012 Chevrolet Silverado 2500 Hd

Wheels & Brakes fasteners on the 2012 Chevrolet Silverado 2500 Hd. 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 rear caliper/drum, the parking brake cable bolt torques to 18 lb-ft (13mm drive, M8 x 1.25 thread). For the front/rear caliper bracket, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 140 lb-ft (brake caliper bracket 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 brake master cylinder mounting nut uses a 13mm drive on a M10 x 1.5 thread, torqued to 20 lb-ft at the firewall/booster. At the brake caliper, the brake line banjo bolt torques to 30 lb-ft (12mm drive, M10 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). Wheel lug nut tightens to 140 ft-lbs (190 Nm), takes a 21mm driver, runs on M14x1.5 threads, located at the wheels. The brake caliper mounting bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 80 lb-ft at the front/rear brake caliper. At the wheel hub area, the wheel speed sensor harness clip torques to 60 lb-in (8mm drive, M6 x 1.0 thread).

Engine - Bottom End — 2012 Chevrolet Silverado 2500 Hd

Engine - Bottom End fasteners on the 2012 Chevrolet Silverado 2500 Hd. At the transmission to crossmember, the engine mount bolt - rear torques to 37 lb-ft (18mm drive, M12 x 1.75 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). Engine mount bolt - front tightens to 59 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the engine block to frame. 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 engine block/timing cover, the crankshaft position sensor bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread). For the engine block, plan for a 12mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (knock sensor bolt). Oil drain plug tightens to 18 ft-lbs (25 Nm), takes a 15mm driver, runs on M12x1.75 threads, located at the oil pan. The timing chain cover bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the engine block. At the oil pan, the oil pan bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread). 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). 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 flywheel bolt uses a 15mm drive on a M12 x 1.75 thread, torqued to TTY: 15+60° at the crankshaft.

Interior — 2012 Chevrolet Silverado 2500 Hd

Interior fasteners on the 2012 Chevrolet Silverado 2500 Hd. For the floor/tunnel, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (center console bolt). Steering wheel nut tightens to 140 ft-lbs (190 Nm), takes a 24mm driver, runs on M14x1.5 threads, located at the steering column. 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 headliner, the sun visor screw torques to Hand Tight (8mm drive, M6 x 1.0 thread). For the b-pillar/floor, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 37 lb-ft (seat belt anchor bolt). Glove box hinge screw tightens to Hand Tight, takes a 8mm driver, runs on M6 x 1.0 threads, located at the dashboard. The floor mat clip uses a None drive on a Push Clip thread, torqued to Hand Tight at the floor pan. At the seat track to floor, the seat mounting bolt torques to 37 lb-ft (13mm drive, M10 x 1.5 thread).

Engine - Top End — 2012 Chevrolet Silverado 2500 Hd

Engine - Top End fasteners on the 2012 Chevrolet Silverado 2500 Hd. 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 8mm tool on a M6 x 1.0 stud; final torque is 89 lb-in (fuel rail 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 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 cylinder head/timing cover, the camshaft position sensor 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 89 lb-in (intake manifold bolt). Map sensor bolt tightens to 70 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the intake manifold. The spark plug uses a 16mm drive on a M14 x 1.25 thread, torqued to 11 lb-ft at the cylinder head. At the intake manifold, the egr valve bolt torques to 15 lb-ft (10mm drive, M8 x 1.25 thread). For the fuel rail, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (fuel injector retainer 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 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 cylinder head, the exhaust manifold stud torques to 15 lb-ft (13mm drive, M8 x 1.25 thread).

Rear Suspension — 2012 Chevrolet Silverado 2500 Hd

Rear Suspension fasteners on the 2012 Chevrolet Silverado 2500 Hd. The rear shock absorber upper bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 70 lb-ft at the frame rail. At the frame rail, the rear stabilizer bar bracket bolt torques to 37 lb-ft (15mm drive, M10 x 1.5 thread). For the rear spring shackle, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 70 lb-ft (leaf spring rear shackle bolt). Rear axle vent tube bolt tightens to 60 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the axle housing. The rear stabilizer bar link bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 44 lb-ft at the axle to sway bar. 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 frame rail, plan for a 21mm tool on a M14 x 2.0 stud; final torque is 110 lb-ft (track bar frame bolt). Rear shock absorber lower bolt tightens to 70 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the axle bracket. The leaf spring front eye bolt uses a 21mm drive on a M14 x 2.0 thread, torqued to 95 lb-ft at the front spring hanger. At the rear axle, the track bar axle bolt torques to 110 lb-ft (21mm drive, M14 x 2.0 thread).

Front Suspension — 2012 Chevrolet Silverado 2500 Hd

Front Suspension fasteners on the 2012 Chevrolet Silverado 2500 Hd. 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 21mm tool on a M14 x 1.5 stud; final torque is 37 lb-ft (upper control arm ball joint nut). Stabilizer bar bracket bolt tightens to 37 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the frame rail. 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 steering knuckle, the tie rod end nut torques to 44 lb-ft (21mm drive, M14 x 1.5 thread). For the upper shock mount, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 18 lb-ft (shock absorber upper 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. 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 steering knuckle, the lower control arm ball joint nut torques to 111 lb-ft (27mm drive, M18 x 1.5 thread). For the sway bar to control arm, plan for a 18mm tool on a M10 x 1.5 stud; final torque is 17 lb-ft (stabilizer bar link nut). Lower control arm frame bolt tightens to 107 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the frame bracket. 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.

Transmission — 2012 Chevrolet Silverado 2500 Hd

Transmission fasteners on the 2012 Chevrolet Silverado 2500 Hd. For the transmission pan, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 10 lb-ft (transmission pan bolt). Transmission cooler line fitting tightens to 26 lb-ft, takes a 17mm driver, runs on M14 x 1.5 threads, located at the transmission case. 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 bell housing, the starter motor bolt torques to 37 lb-ft (15mm drive, M10 x 1.5 thread). For the transmission top, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 60 lb-in (transmission vent tube bolt). Park/neutral switch bolt tightens to 80 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the transmission case. The shift linkage bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 15 lb-ft at the transmission shifter. At the bell housing, the transmission to engine bolt torques to 37 lb-ft (18mm drive, M12 x 1.75 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.

Exhaust System — 2012 Chevrolet Silverado 2500 Hd

Exhaust System fasteners on the 2012 Chevrolet Silverado 2500 Hd. 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 oxygen sensor uses a 22mm drive on a M18 x 1.5 thread, torqued to 31 lb-ft at the exhaust pipe. At the muffler connection, the muffler clamp bolt torques to 25 lb-ft (13mm drive, M8 x 1.25 thread). For the tailpipe connection, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 25 lb-ft (tailpipe clamp bolt). Catalytic converter bolt tightens to 37 lb-ft, takes a 15mm driver, runs on M10 x 1.5 threads, located at the exhaust pipe flange. 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.

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 2012 Chevrolet Silverado 2500 Hd numbers above.

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