2012 GMC Sierra 1500 Lug Nut Torque & Bolt Specs

The 2012 GMC Sierra 1500 lug nut torque is 140 ft-lbs (190 Nm), tightened with a 22mm 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: 22mm · Thread: M14x1.5.

This page is the OEM-referenced fastener summary for the 2012 GMC Sierra 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 2012 GMC Sierra 1500

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket bolts (typically 80-130 ft-lbs) and slide/guide pins (18-35 ft-lbs)
Engine oil drain plug torque — rarely above 30 ft-lbs; always use a new crush washer
Transmission pan, valve cover, and intake manifold bolts (low torque, often 89-106 in-lbs)
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque (typically 10-15 ft-lbs on aluminum heads — do not exceed)
Differential cover bolts (RWD/4WD only) and transfer case fasteners

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

Metric socket set (8mm-22mm), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Anti-seize on stainless or dissimilar-metal threads; thread-locker (Loctite blue) on critical reassembly

Frequently asked questions

What is the lug nut torque on a 2012 GMC Sierra 1500?

The OEM-specified lug-nut torque for the 2012 GMC Sierra 1500 is 140 ft-lbs (190 Nm), using a 22mm 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 GMC Sierra 1500 lug nuts?

The 2012 GMC Sierra 1500 uses a 22mm 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 GMC Sierra 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 GMC Sierra 1500 years

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

→ 2012 GMC Sierra 1500 suspension & steering torque specs (control arm, ball joint, tie rod)

All 27 2012 GMC Sierra 1500 fastener specs

Per-bolt torque, wrench size, and thread spec for the 2012 GMC Sierra 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. 1 of the 27 fastener specs on this page are independently verified against OEM service manuals and manufacturer torque data (last reviewed June 2026).

Wheels — 2012 GMC Sierra 1500

Wheel and lug nut spec for the 2012 GMC Sierra 1500. For the all four wheels, plan for a 22mm tool on a M14x1.5 stud; final torque is 140 ft-lbs (190 Nm) (lug nut).

Engine — 2012 GMC Sierra 1500

Engine bolt-by-bolt torque for the 2012 GMC Sierra 1500, including the long block, valve covers, and intake. Oil drain plug tightens to 18 ft-lbs (25 Nm), runs on M12x1.75 threads, located at the oil pan. This figure is independently verified against OEM service data. The idler pulley bolt uses a 15mm drive on a M10x1.5 thread, torqued to 37 ft-lbs at the idler pulley. At the throttle body, the throttle body bolt torques to 89 in-lbs (10mm drive, M8x1.25 thread). For the fuel rail, plan for a 10mm tool on a M8x1.25 stud; final torque is 89 in-lbs (fuel rail bolt). Air intake boot clamp tightens to Hand tight, takes a 8mm driver, runs on N/A threads, located at the air intake.

Suspension — 2012 GMC Sierra 1500

Suspension and chassis fastener torque for the 2012 GMC Sierra 1500 — strut, control arm, and sway bar values. The upper control arm bolt uses a 21mm drive on a M14x2.0 thread, torqued to 140 ft-lbs at the upper control arm. At the shock tower, the shock absorber upper bolt torques to 70 ft-lbs (18mm drive, M12x1.75 thread). For the strut tower, plan for a 18mm tool on a M12x1.75 stud; final torque is 44 ft-lbs (strut tower nut). Sway bar bracket bolt tightens to 35 ft-lbs, takes a 15mm driver, runs on M10x1.5 threads, located at the frame. The sway bar end link nut uses a 15mm drive on a M10x1.5 thread, torqued to 35 ft-lbs at the sway bar link. At the steering box, the pitman arm nut torques to 185 ft-lbs (27mm drive, M16x1.5 thread). For the frame rail, plan for a 18mm tool on a M12x1.75 stud; final torque is 110 ft-lbs (steering gearbox bolt). Tie rod end nut tightens to 40 ft-lbs, takes a 19mm driver, runs on M12x1.75 threads, located at the tie rod. The ball joint castle nut uses a 22mm drive on a M14x1.5 thread, torqued to 50 ft-lbs at the ball joint. At the lower control arm, the lower control arm bolt torques to 140 ft-lbs (21mm drive, M14x2.0 thread). For the lower mount, plan for a 18mm tool on a M12x1.75 stud; final torque is 70 ft-lbs (shock absorber lower bolt). Leaf spring u-bolt tightens to 120 ft-lbs, takes a 19mm driver, runs on M12x1.75 threads, located at the rear axle.

Transmission — 2012 GMC Sierra 1500

Transmission fasteners on the 2012 GMC Sierra 1500. At the bell housing, the bell housing bolt torques to 37 ft-lbs (18mm drive, M12x1.75 thread). For the transmission, plan for a 17mm tool on a N/A stud; final torque is 20 ft-lbs (transmission cooler line fitting). Torque converter bolt tightens to 46 ft-lbs, takes a 15mm driver, runs on M10x1.5 threads, located at the flex plate. The driveshaft u-joint strap bolt uses a 13mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the driveshaft. At the frame, the transmission crossmember bolt torques to 70 ft-lbs (18mm drive, M12x1.75 thread). For the transfer case, plan for a 15mm tool on a M10x1.5 stud; final torque is 37 ft-lbs (transfer case bolt). Transmission mount bolt tightens to 70 ft-lbs, takes a 18mm driver, runs on M12x1.75 threads, located at the trans mount. The transmission pan bolt uses a 13mm drive on a M8x1.25 thread, torqued to 12 ft-lbs at the trans pan. At the transfer case, the transfer case drain plug torques to 15 ft-lbs (15mm drive, M14x1.5 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 GMC Sierra 1500 numbers above.

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