2020 Chevrolet Silverado 2500 Hd Lug Nut Torque & Bolt Specs

The 2020 Chevrolet Silverado 2500 Hd 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 2020 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 2020 Chevrolet Silverado 2500 Hd

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 2500 Hd?

The OEM-specified lug-nut torque for the 2020 Chevrolet Silverado 2500 Hd 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 2020 Chevrolet Silverado 2500 Hd lug nuts?

The 2020 Chevrolet Silverado 2500 Hd 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 2020 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.

→ 2020 Chevrolet Silverado 2500 Hd oil drain plug torque & size

→ 2020 Chevrolet Silverado 2500 Hd suspension & steering torque specs (control arm, ball joint, tie rod)

→ 2020 Chevrolet Silverado 2500 Hd engine & transmission mount torque specs

All 120 2020 Chevrolet Silverado 2500 Hd fastener specs

Per-bolt torque, wrench size, and thread spec for the 2020 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 — 2020 Chevrolet Silverado 2500 Hd

Drivetrain and driveline fasteners for the 2020 Chevrolet Silverado 2500 Hd — axle, transmission, and differential plugs. At the transmission/transfer case, the transfer case mounting bolt torques to 37 lb-ft (18mm drive, M12 x 1.75 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). 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 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 differential cover, the differential cover bolt torques to 25 lb-ft (13mm drive, M10 x 1.5 thread). 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 fill 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 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.

Steering — 2020 Chevrolet Silverado 2500 Hd

Steering linkage fasteners on the 2020 Chevrolet Silverado 2500 Hd. 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 steering shaft pinch bolt uses a 13mm drive on a M10 x 1.5 thread, torqued to 22 lb-ft at the steering column. At the dash/firewall, the steering column bracket bolt torques to 18 lb-ft (13mm drive, M10 x 1.5 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). Power steering pump mounting bolt tightens to 37 lb-ft, takes a 15mm driver, runs on M10 x 1.5 threads, located at the engine block/bracket. 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 frame rail, the steering gear box mounting bolt torques to 110 lb-ft (21mm drive, M14 x 2.0 thread).

Electrical — 2020 Chevrolet Silverado 2500 Hd

Electrical fasteners on the 2020 Chevrolet Silverado 2500 Hd. 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 engine block/frame, the ground wire bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread). For the rear bumper, plan for a 7mm tool on a 1/4-20 stud; final torque is 2 lb-ft (license plate screw). 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 wiring harness bracket bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 80 lb-in at the various locations.

Front Suspension — 2020 Chevrolet Silverado 2500 Hd

Front Suspension fasteners on the 2020 Chevrolet Silverado 2500 Hd. The lower control arm frame bolt uses a 21mm drive on a M14 x 2.0 thread, torqued to 107 lb-ft at the frame bracket. At the wheel hub, the steering knuckle to hub bolt torques to 133 lb-ft (18mm drive, M12 x 1.75 thread). For the steering knuckle, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 177 lb-ft (hub bearing retaining bolt). 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 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 torsion bar crossmember, the torsion bar adjuster bolt torques to Variable (18mm drive, M12 x 1.75 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). 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 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 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). 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.

Transmission — 2020 Chevrolet Silverado 2500 Hd

Transmission fasteners on the 2020 Chevrolet Silverado 2500 Hd. 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 pan bolt tightens to 10 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the transmission pan. 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 top, the transmission vent tube bolt torques to 60 lb-in (8mm drive, M6 x 1.0 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 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 mount bolt uses a 18mm drive on a M12 x 1.75 thread, torqued to 37 lb-ft at the crossmember. At the bell housing, the transmission to engine bolt torques to 37 lb-ft (18mm drive, M12 x 1.75 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).

Engine - Bottom End — 2020 Chevrolet Silverado 2500 Hd

Engine - Bottom End fasteners on the 2020 Chevrolet Silverado 2500 Hd. 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). 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 oil drain plug uses a 15mm drive on a M12x1.75 thread, torqued to 18 ft-lbs (25 Nm) at the oil pan. At the transmission to crossmember, the engine mount bolt - rear torques to 37 lb-ft (18mm 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 crankshaft position sensor bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 80 lb-in at the engine block/timing cover. At the timing cover, the water pump bolt torques to 11 lb-ft (10mm drive, M8 x 1.25 thread). For the engine block to frame, plan for a 18mm tool on a M12 x 1.75 stud; final torque is 59 lb-ft (engine mount bolt - front). Knock sensor bolt tightens to 18 lb-ft, takes a 12mm driver, runs on M8 x 1.25 threads, located at the engine block. The oil filter adapter bolt uses a 10mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the engine block. At the crankshaft, the flywheel bolt torques to TTY: 15+60° (15mm drive, M12 x 1.75 thread).

Rear Suspension — 2020 Chevrolet Silverado 2500 Hd

Rear Suspension fasteners on the 2020 Chevrolet Silverado 2500 Hd. Rear shock absorber upper bolt tightens to 70 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the frame rail. 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). 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 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 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 axle bracket, the rear shock absorber lower bolt torques to 70 lb-ft (18mm drive, M12 x 1.75 thread). 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). 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 track bar frame bolt uses a 21mm drive on a M14 x 2.0 thread, torqued to 110 lb-ft at the frame rail.

Exhaust System — 2020 Chevrolet Silverado 2500 Hd

Exhaust System fasteners on the 2020 Chevrolet Silverado 2500 Hd. 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 manifold, the exhaust pipe flange bolt torques to 25 lb-ft (15mm drive, M10 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). 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 hanger bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 18 lb-ft at the frame/body mount. At the muffler connection, the muffler clamp bolt torques to 25 lb-ft (13mm drive, M8 x 1.25 thread).

Body & Cab — 2020 Chevrolet Silverado 2500 Hd

Body & Cab fasteners on the 2020 Chevrolet Silverado 2500 Hd. At the fender to cab, the fender mounting bolt torques to 18 lb-ft (10mm drive, M8 x 1.25 thread). For the door jamb, plan for a 10mm tool on a M8 x 1.25 stud; final torque is 18 lb-ft (door striker bolt). Cab mount bolt tightens to 74 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the cab 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 frame horn, the tow hook bolt torques to 50 lb-ft (18mm drive, M12 x 1.75 thread). 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). 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 grille mounting clip uses a None drive on a Push Clip thread, torqued to Hand Tight at the radiator support. At the cab/frame, the running board mounting bolt torques to 35 lb-ft (13mm drive, M10 x 1.5 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). 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 tailgate hinge bolt uses a 13mm drive on a M8 x 1.25 thread, torqued to 20 lb-ft at the bed rail to tailgate. At the hood to fender, the hood hinge 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). Bumper mounting bolt - rear tightens to 30 lb-ft, takes a 18mm driver, runs on M12 x 1.75 threads, located at the frame rail.

Wheels & Brakes — 2020 Chevrolet Silverado 2500 Hd

Wheels & Brakes fasteners on the 2020 Chevrolet Silverado 2500 Hd. For the wheel hub area, plan for a 8mm tool on a M6 x 1.0 stud; final torque is 60 lb-in (wheel speed sensor harness clip). Parking brake cable bolt tightens to 18 lb-ft, takes a 13mm driver, runs on M8 x 1.25 threads, located at the rear caliper/drum. 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 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 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). 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 140 lb-ft, takes a 21mm driver, runs on M14 x 2.0 threads, located at the front/rear caliper bracket.

Engine - Top End — 2020 Chevrolet Silverado 2500 Hd

Engine - Top End fasteners on the 2020 Chevrolet Silverado 2500 Hd. 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 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 intake manifold, the intake manifold bolt torques to 89 lb-in (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). 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 fuel rail bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 89 lb-in at the intake manifold. At the cylinder head, the exhaust manifold stud torques to 15 lb-ft (13mm drive, M8 x 1.25 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). 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 throttle body bolt uses a 8mm drive on a M6 x 1.0 thread, torqued to 89 lb-in at the intake manifold. 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). 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 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 valve cover, the valve cover bolt torques to 106 lb-in (10mm drive, M8 x 1.25 thread).

Interior — 2020 Chevrolet Silverado 2500 Hd

Interior fasteners on the 2020 Chevrolet Silverado 2500 Hd. The floor mat clip uses a None drive on a Push Clip thread, torqued to Hand Tight at the floor pan. 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). Dashboard mounting bolt tightens to 18 lb-ft, takes a 10mm driver, runs on M8 x 1.25 threads, located at the dash to firewall. 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 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). 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.

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 2500 Hd numbers above.

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