2020 Chevrolet Silverado 3500 Hd Drw Lug Nut Torque & Bolt Specs

The 2020 Chevrolet Silverado 3500 Hd Drw 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 2020 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 2020 Chevrolet Silverado 3500 Hd Drw

Repair guidance for this model year

For 2020 late-model work: Modern vehicles increasingly use aluminum body and suspension components. Aluminum fastener torque is typically 60-70% of equivalent steel torque, and aluminum threads strip easily. Use a calibrated torque wrench and apply anti-seize on any steel fastener threading into aluminum.

Tools you will need

Frequently asked questions

What is the lug nut torque on a 2020 Chevrolet Silverado 3500 Hd Drw?

The OEM-specified lug-nut torque for the 2020 Chevrolet Silverado 3500 Hd Drw 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 2020 Chevrolet Silverado 3500 Hd Drw lug nuts?

The 2020 Chevrolet Silverado 3500 Hd Drw 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 2020 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.

→ 2020 Chevrolet Silverado 3500 Hd Drw oil drain plug torque & size

→ 2020 Chevrolet Silverado 3500 Hd Drw suspension & steering torque specs (control arm, ball joint, tie rod)

→ 2020 Chevrolet Silverado 3500 Hd Drw engine & transmission mount torque specs

All 120 2020 Chevrolet Silverado 3500 Hd Drw fastener specs

Per-bolt torque, wrench size, and thread spec for the 2020 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 — 2020 Chevrolet Silverado 3500 Hd Drw

Drivetrain and driveline fasteners for the 2020 Chevrolet Silverado 3500 Hd Drw — axle, transmission, and differential plugs. For the front axle housing, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (front differential actuator bolt). 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 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 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). Driveshaft u-joint strap bolt tightens to 15 lb-ft, takes a 1/2 inch driver, runs on 5/16-18 threads, located at the driveshaft yoke. 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 transmission/transfer case, the transfer case mounting bolt torques to 37 lb-ft (18mm drive, M12 x 1.75 thread).

Steering — 2020 Chevrolet Silverado 3500 Hd Drw

Steering linkage fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. 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. At the dash/firewall, the steering column bracket bolt torques to 18 lb-ft (13mm drive, M10 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). 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 drag link end nut uses a 21mm drive on a M14 x 1.5 thread, torqued to 44 lb-ft at the pitman arm/knuckle. At the frame rail, the idler arm bolt torques to 60 lb-ft (18mm drive, M12 x 1.75 thread). For the steering gear output, plan for a 30mm tool on a M20 x 1.5 stud; final torque is 184 lb-ft (pitman arm nut).

Electrical — 2020 Chevrolet Silverado 3500 Hd Drw

Electrical fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. 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 various locations, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 80 lb-in (wiring harness bracket 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. 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).

Front Suspension — 2020 Chevrolet Silverado 3500 Hd Drw

Front Suspension fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. At the lower control arm, the shock absorber lower bolt torques to 59 lb-ft (18mm 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). 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 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 torsion bar crossmember, the torsion bar adjuster bolt torques to Variable (18mm drive, M12 x 1.75 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 frame bolt tightens to 140 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the frame bracket. The tie rod end nut uses a 21mm drive on a M14 x 1.5 thread, torqued to 44 lb-ft at the steering knuckle. At the upper shock mount, the shock absorber upper nut torques to 18 lb-ft (13mm drive, M10 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 ball joint nut tightens to 111 lb-ft, takes a 27mm driver, runs on M18 x 1.5 threads, located at the steering knuckle. The stabilizer bar bracket bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 37 lb-ft at the frame rail.

Rear Suspension — 2020 Chevrolet Silverado 3500 Hd Drw

Rear Suspension fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. 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). 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 u-bolt uses a 5/8 inch drive on a 7/16-20 thread, torqued to 52 lb-ft at the axle to spring. At the frame rail, the track bar frame bolt torques to 110 lb-ft (21mm drive, M14 x 2.0 thread). For the axle housing, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 60 lb-in (rear axle vent tube bolt). Rear stabilizer bar link bolt tightens to 44 lb-ft, takes a 15mm driver, runs on M10 x 1.5 threads, located at the axle to sway bar. 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 frame rail, the rear shock absorber upper bolt torques to 70 lb-ft (18mm drive, M12 x 1.75 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 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.

Exhaust System — 2020 Chevrolet Silverado 3500 Hd Drw

Exhaust System fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. Oxygen sensor tightens to 31 lb-ft, takes a 22mm driver, runs on M18 x 1.5 threads, located at the exhaust pipe. The catalytic converter bolt uses a 15mm drive on a M10 x 1.5 thread, torqued to 37 lb-ft at the exhaust pipe flange. At the frame/body mount, the exhaust hanger bolt torques to 18 lb-ft (13mm drive, M8 x 1.25 thread). For the muffler connection, plan for a 13mm tool on a M8 x 1.25 stud; final torque is 25 lb-ft (muffler clamp bolt). Tailpipe clamp bolt tightens to 25 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the tailpipe connection. 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.

Body & Cab — 2020 Chevrolet Silverado 3500 Hd Drw

Body & Cab fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. The bed mounting bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 44 lb-ft at the bed to frame. At the door to cab pillar, the door hinge bolt torques to 20 lb-ft (13mm drive, M10 x 1.5 thread). For the fender to cab, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (fender mounting bolt). Grille mounting clip tightens to Hand Tight, takes a None driver, runs on Push Clip threads, located at the radiator support. The skid plate bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the frame rail. At the bed rail, the bed rail tie-down torques to 15 lb-ft (13mm 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 30 lb-ft (bumper mounting bolt - rear). 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 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 hood to fender, the hood hinge bolt torques to 18 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). Tow hook bolt tightens to 50 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the frame horn. 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 to frame, the cab mount bolt torques to 74 lb-ft (18mm drive, M12 x 1.75 thread). For the frame horn, plan for a 13mm tool on a M10 x 1.5 stud; final torque is 18 lb-ft (radiator support bolt).

Engine - Bottom End — 2020 Chevrolet Silverado 3500 Hd Drw

Engine - Bottom End fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. At the crankshaft, the crankshaft pulley bolt torques to TTY: 37+140° (24mm drive, M16 x 2.0 thread). For the crankshaft, plan for a 15mm tool on a M12 x 1.75 stud; final torque is TTY: 15+60° (flywheel 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 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/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 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 thermostat housing bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 11 lb-ft at the intake manifold/block. At the transmission to crossmember, the engine mount bolt - rear torques to 37 lb-ft (18mm drive, M12 x 1.75 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 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.

Interior — 2020 Chevrolet Silverado 3500 Hd Drw

Interior fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. 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). Glove box hinge screw tightens to Hand Tight, takes a 8mm driver, runs on M6 x 1.0 threads, located at the dashboard. 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 steering column, the steering wheel nut torques to 140 ft-lbs (190 Nm) (24mm drive, M14x1.5 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). Sun visor screw tightens to Hand Tight, takes a 8mm driver, runs on M6 x 1.0 threads, located at the headliner. 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).

Transmission — 2020 Chevrolet Silverado 3500 Hd Drw

Transmission fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. 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 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 bell housing, the starter motor bolt torques to 37 lb-ft (15mm drive, M10 x 1.5 thread). For the crossmember, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 37 lb-ft (transmission mount bolt). Shift linkage bolt tightens to 15 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the transmission shifter. The transmission vent tube bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 60 lb-in at the transmission top. At the transmission case, the park/neutral switch bolt torques to 80 lb-in (8mm drive, M6 x 1.0 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 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 pan bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 10 lb-ft at the transmission pan.

Engine - Top End — 2020 Chevrolet Silverado 3500 Hd Drw

Engine - Top End fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. 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 cylinder head/timing cover, the camshaft position sensor bolt torques to 80 lb-in (8mm drive, M6 x 1.0 thread). For the valve cover, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 60 lb-in (pcv valve grommet 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 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 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). Exhaust manifold bolt tightens to 18 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the exhaust manifold. 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 throttle body bolt torques to 89 lb-in (8mm drive, M6 x 1.0 thread). For the throttle body/air box, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 40 lb-in (air intake tube clamp). Cylinder head bolt tightens to TTY: 22+90°, takes a 15mm driver, runs on M11 x 2.0 threads, located at the cylinder head. 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 intake manifold, the intake manifold bolt torques to 89 lb-in (10mm drive, M8 x 1.25 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).

Wheels & Brakes — 2020 Chevrolet Silverado 3500 Hd Drw

Wheels & Brakes fasteners on the 2020 Chevrolet Silverado 3500 Hd Drw. At the brake rotor, the brake rotor set screw torques to 35 lb-in (10mm drive, M8 x 1.25 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 lug nut tightens to 140 ft-lbs (190 Nm), takes a 21mm driver, runs on M14x1.5 threads, located at the wheels. 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 brake caliper, the brake caliper mounting bolt torques to 80 lb-ft (18mm drive, M12 x 1.75 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 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 rear caliper/drum, the parking brake cable bolt torques to 18 lb-ft (13mm drive, M8 x 1.25 thread). For the brake caliper, plan for a 12mm tool on a M10 x 1.0 stud; final torque is 30 lb-ft (brake line banjo bolt).

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 2020 Chevrolet Silverado 3500 Hd Drw numbers above.

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