2012 Chevrolet Silverado 3500 Hd Drw Lug Nut Torque & Bolt Specs

The 2012 Chevrolet Silverado 3500 Hd Drw 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 2012 Chevrolet Silverado 3500 Hd Drw. 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 3500 Hd Drw

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 3500 Hd Drw?

The OEM-specified lug-nut torque for the 2012 Chevrolet Silverado 3500 Hd Drw 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 2012 Chevrolet Silverado 3500 Hd Drw lug nuts?

The 2012 Chevrolet Silverado 3500 Hd Drw 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 2012 Chevrolet Silverado 3500 Hd Drw 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 3500 Hd Drw years

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

→ 2012 Chevrolet Silverado 3500 Hd Drw oil drain plug torque & size

→ 2012 Chevrolet Silverado 3500 Hd Drw suspension & steering torque specs (control arm, ball joint, tie rod)

→ 2012 Chevrolet Silverado 3500 Hd Drw engine & transmission mount torque specs

All 120 2012 Chevrolet Silverado 3500 Hd Drw fastener specs

Per-bolt torque, wrench size, and thread spec for the 2012 Chevrolet Silverado 3500 Hd Drw, 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 3500 Hd Drw

Drivetrain and driveline fasteners for the 2012 Chevrolet Silverado 3500 Hd Drw — axle, transmission, and differential plugs. Differential drain plug tightens to 24 lb-ft, takes a 3/8 inch driver, runs on 3/8-18 NPT threads, located at the differential housing. The front differential actuator bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the front axle housing. At the frame crossmember, the driveshaft center support bearing bolt torques to 37 lb-ft (13mm drive, M10 x 1.5 thread). For the transfer case, plan for a 15mm tool on a M14 x 1.5 stud; final torque is 25 lb-ft (transfer case drain plug). 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 differential cover bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 25 lb-ft at the differential cover. At the differential housing, the differential fill plug torques to 24 lb-ft (3/8 inch drive, 3/8-18 NPT 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).

Steering — 2012 Chevrolet Silverado 3500 Hd Drw

Steering linkage fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. The pitman arm nut uses a 30mm drive on a M20 x 1.5 thread, torqued to 184 lb-ft at the steering gear output. At the frame rail, the steering gear box mounting bolt torques to 110 lb-ft (21mm drive, M14 x 2.0 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). Steering column bracket bolt tightens to 18 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the dash/firewall. 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 pitman arm/knuckle, the drag link end nut torques to 44 lb-ft (21mm drive, M14 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). Idler arm bolt tightens to 60 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the frame rail.

Electrical — 2012 Chevrolet Silverado 3500 Hd Drw

Electrical fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. At the battery post, the battery terminal bolt torques to 11 lb-ft (10mm drive, M8 x 1.25 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). 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 battery hold-down bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the battery tray. At the rear bumper, the license plate screw torques to 2 lb-ft (7mm drive, 1/4-20 thread). For the engine block/bracket, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (alternator mounting bolt).

Body & Cab — 2012 Chevrolet Silverado 3500 Hd Drw

Body & Cab fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. 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 cab mount bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 74 lb-ft at the cab to frame. At the door jamb, the door striker bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 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). Running board mounting bolt tightens to 35 lb-ft, takes a 13mm driver, runs on M10 x 1.5 threads, located at the cab/frame. 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 frame rail, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 30 lb-ft (bumper mounting bolt - rear). 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 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 door to cab pillar, the door hinge bolt torques to 20 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). 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 tow hook bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 50 lb-ft at the frame horn.

Front Suspension — 2012 Chevrolet Silverado 3500 Hd Drw

Front Suspension fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. Stabilizer bar link nut tightens to 17 lb-ft, takes a 18mm driver, runs on M10 x 1.5 threads, located at the sway bar to control arm. The torsion bar adjuster bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to Variable at the torsion bar crossmember. At the frame bracket, the upper control arm frame bolt torques to 140 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). 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 steering knuckle to hub bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 133 lb-ft at the wheel hub. At the steering knuckle, the tie rod end nut torques to 44 lb-ft (21mm drive, M14 x 1.5 thread). For the frame rail, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 37 lb-ft (stabilizer bar bracket 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 lower control arm ball joint nut uses a 27mm drive on a M18 x 1.5 thread, torqued to 111 lb-ft at the steering knuckle. At the steering knuckle, the hub bearing retaining bolt torques to 177 lb-ft (18mm drive, M12 x 1.75 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).

Transmission — 2012 Chevrolet Silverado 3500 Hd Drw

Transmission fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. The transmission pan bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 10 lb-ft at the transmission pan. At the flexplate, the torque converter bolt torques to 46 lb-ft (15mm drive, M10 x 1.5 thread). For the bell housing, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 37 lb-ft (transmission to engine 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 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 shifter, the shift linkage bolt torques to 15 lb-ft (10mm drive, M8 x 1.25 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). Transmission crossmember bolt tightens to 70 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the frame rail. The transmission mount bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 37 lb-ft at the crossmember. At the transmission case, the park/neutral switch bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread).

Engine - Bottom End — 2012 Chevrolet Silverado 3500 Hd Drw

Engine - Bottom End fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. At the engine block, the timing chain cover bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread). For the oil pan, plan for a 15mm tool on a M14x1.5 stud; final torque is 18 ft-lbs (25 Nm) (oil drain plug). 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 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 timing cover, the water pump bolt torques to 11 lb-ft (10mm drive, M8 x 1.25 thread). For the intake manifold/block, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 11 lb-ft (thermostat housing bolt). Oil filter adapter bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the engine block. The knock sensor bolt uses a 12mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the engine block. 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 oil pan, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (oil pan bolt). Crankshaft pulley bolt tightens to TTY: 37+140°, takes a 24mm driver, runs on M16 x 2.0 threads, located at the crankshaft. The flywheel bolt uses a 15mm drive on a M12 x 1.75 thread, torqued to TTY: 15+60° at the crankshaft.

Rear Suspension — 2012 Chevrolet Silverado 3500 Hd Drw

Rear Suspension fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. For the axle to sway bar, plan for a 15mm tool on a M10 x 1.5 stud; final torque is 44 lb-ft (rear stabilizer bar link 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 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 21mm tool on a M14 x 2.0 stud; final torque is 110 lb-ft (track bar frame bolt). Track bar axle bolt tightens to 110 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the rear axle. 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 axle to spring, the leaf spring u-bolt torques to 52 lb-ft (5/8 inch drive, 7/16-20 thread). For the axle bracket, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 70 lb-ft (rear shock absorber lower 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.

Engine - Top End — 2012 Chevrolet Silverado 3500 Hd Drw

Engine - Top End fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. Intake manifold bolt tightens to 89 lb-in, takes a 10mm driver, runs on M8 x 1.25 threads, located at the intake manifold. The fuel injector retainer bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 80 lb-in at the fuel rail. At the valve cover, the ignition coil bolt torques to 70 lb-in (8mm drive, M6 x 1.0 thread). For the cylinder head, plan for a 16mm tool on a M14 x 1.25 stud; final torque is 11 lb-ft (spark plug). 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 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 valve cover, the pcv valve grommet bolt torques to 60 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). 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 intake manifold, the fuel rail bolt torques to 89 lb-in (8mm drive, M6 x 1.0 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). 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 map sensor bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 70 lb-in at the intake manifold. At the intake manifold, the throttle body bolt torques to 89 lb-in (8mm drive, M6 x 1.0 thread).

Wheels & Brakes — 2012 Chevrolet Silverado 3500 Hd Drw

Wheels & Brakes fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. The brake line banjo bolt uses a 12mm drive on a M10 x 1.0 thread, torqued to 30 lb-ft at the brake caliper. At the firewall/booster, the brake master cylinder mounting nut torques to 20 lb-ft (13mm drive, M10 x 1.5 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 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. At the front/rear caliper bracket, the brake caliper bracket bolt torques to 140 lb-ft (21mm drive, M14 x 2.0 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). Wheel speed sensor harness clip tightens to 60 lb-in, takes a 8mm driver, runs on M6 x 1.0 threads, located at the wheel hub area. 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/knuckle, the abs sensor bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread).

Exhaust System — 2012 Chevrolet Silverado 3500 Hd Drw

Exhaust System fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. At the exhaust manifold, the exhaust pipe flange bolt torques to 25 lb-ft (15mm drive, M10 x 1.5 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). Muffler clamp bolt tightens to 25 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the muffler connection. 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 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 — 2012 Chevrolet Silverado 3500 Hd Drw

Interior fasteners on the 2012 Chevrolet Silverado 3500 Hd Drw. For the headliner, plan for a 8mm tool on a M6 x 1.0 stud; final torque is Hand Tight (sun visor screw). Glove box hinge screw tightens to Hand Tight, takes a 8mm driver, runs on M6 x 1.0 threads, located at the dashboard. 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 floor pan, the floor mat clip torques to Hand Tight (None drive, Push Clip thread). 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 seat belt anchor bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 37 lb-ft at the b-pillar/floor. At the seat track to floor, the seat mounting bolt torques to 37 lb-ft (13mm drive, M10 x 1.5 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 2012 Chevrolet Silverado 3500 Hd Drw numbers above.

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