2021 Chevrolet Blazer Lug Nut Torque & Bolt Specs

The 2021 Chevrolet Blazer 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 2021 Chevrolet Blazer. 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 2021 Chevrolet Blazer

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 2021 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

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 2021 Chevrolet Blazer?

The OEM-specified lug-nut torque for the 2021 Chevrolet Blazer 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 2021 Chevrolet Blazer lug nuts?

The 2021 Chevrolet Blazer 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 2021 Chevrolet Blazer 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 Blazer years

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

→ 2021 Chevrolet Blazer oil drain plug torque & size

→ 2021 Chevrolet Blazer suspension & steering torque specs (control arm, ball joint, tie rod)

All 32 2021 Chevrolet Blazer fastener specs

Per-bolt torque, wrench size, and thread spec for the 2021 Chevrolet Blazer, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both.

Brakes — 2021 Chevrolet Blazer

Brake fasteners on the 2021 Chevrolet Blazer — caliper bracket, slide pins, and banjo bolt torque follow. The front caliper bracket bolt uses a 18mm drive on a M12x1.5 thread, torqued to 137 ft-lbs (186 Nm) at the front. At the front, the front caliper slide pin bolt torques to 26 ft-lbs (35 Nm) (13mm drive, M8x1.25 thread). For the rear, plan for a 13mm tool on a M10x1.5 stud; final torque is 32 ft-lbs (43 Nm) (rear caliper bracket bolt). Rear caliper slide pin bolt tightens to 26 ft-lbs (35 Nm), takes a 13mm driver, runs on M8x1.25 threads, located at the rear. The brake rotor screw uses a T20 drive on a M6x1.0 thread, torqued to 62 in-lbs (7 Nm).

Engine — 2021 Chevrolet Blazer

Engine bolt-by-bolt torque for the 2021 Chevrolet Blazer, including the long block, valve covers, and intake. The water pump bolt torques to 18 ft-lbs (24 Nm) (10mm drive, M8x1.25 thread). plan for a 16mm tool on a M14x1.25 stud; final torque is 13 ft-lbs (18 Nm) (spark plug). Oil drain plug tightens to 18 ft-lbs (25 Nm), takes a 15mm driver, runs on M12x1.75 threads. The valve cover bolt uses a 8mm drive on a M6x1.0 thread, torqued to 89 in-lbs (10 Nm). The intake manifold bolt torques to 18 ft-lbs (24 Nm) (10mm drive, M8x1.25 thread). plan for a 13mm tool on a M8x1.25 stud; final torque is 11 ft-lbs (15 Nm) (exhaust manifold bolt). Engine mount through bolt tightens to 74 ft-lbs (100 Nm), takes a 18mm driver, runs on M12x1.75 threads. The crankshaft pulley bolt uses a 24mm drive on a M20x1.5 thread, torqued to 74 ft-lbs + 150° turn.

Drivetrain — 2021 Chevrolet Blazer

Drivetrain and driveline fasteners for the 2021 Chevrolet Blazer — axle, transmission, and differential plugs. plan for a 24mm tool on a M16x1.5 stud; final torque is 26 ft-lbs (35 Nm) (rear drive unit drain plug). Awd transfer unit drain plug tightens to 26 ft-lbs (35 Nm), takes a 24mm driver, runs on M16x1.5 threads.

Suspension — 2021 Chevrolet Blazer

Suspension and chassis fastener torque for the 2021 Chevrolet Blazer — strut, control arm, and sway bar values. Lower control arm front bolt tightens to 148 ft-lbs (200 Nm), takes a 21mm driver, runs on M14x1.5 threads. The strut-to-knuckle bolt uses a 18mm drive on a M12x1.5 thread, torqued to 133 ft-lbs (180 Nm). The wheel hub bearing bolt torques to 96 ft-lbs (130 Nm) (15mm drive, M10x1.5 thread). plan for a 21mm tool on a M14x1.5 stud; final torque is 111 ft-lbs (150 Nm) (rear knuckle-to-lateral link). Sway bar bracket bolt tightens to 37 ft-lbs (50 Nm), takes a 15mm driver, runs on M10x1.5 threads. The sway bar link nut uses a 15mm drive on a M10x1.5 thread, torqued to 48 ft-lbs (65 Nm). The rear shock lower bolt torques to 81 ft-lbs (110 Nm) (18mm drive, M12x1.5 thread). plan for a 21mm tool on a M14x1.5 stud; final torque is 59 ft-lbs (80 Nm) (strut mount nut). Tie rod end nut tightens to 52 ft-lbs (70 Nm), takes a 19mm driver, runs on M12x1.5 threads. The rear shock upper nut uses a 15mm drive on a M10x1.5 thread, torqued to 15 ft-lbs (20 Nm).

Steering — 2021 Chevrolet Blazer

Steering linkage fasteners on the 2021 Chevrolet Blazer. The steering rack mount bolt uses a 15mm drive on a M10x1.5 thread, torqued to 89 ft-lbs (120 Nm). The steering intermediate shaft pinch bolt torques to 35 ft-lbs (47 Nm) (15mm drive, M10x1.5 thread).

Body — 2021 Chevrolet Blazer

Body fasteners on the 2021 Chevrolet Blazer. The seat belt anchor bolt torques to 37 ft-lbs (50 Nm) (18mm drive, M12x1.5 thread). plan for a 15mm tool on a M10x1.5 stud; final torque is 15 ft-lbs (20 Nm) (seat mounting bolt).

Transmission — 2021 Chevrolet Blazer

Transmission fasteners on the 2021 Chevrolet Blazer. plan for a 15mm tool on a M10x1.5 stud; final torque is 55 ft-lbs (75 Nm) (transmission-to-engine bolt). Transmission pan bolt tightens to 11 ft-lbs (15 Nm), takes a 10mm driver, runs on M8x1.25 threads.

Wheels & Tires — 2021 Chevrolet Blazer

Wheels & Tires fasteners on the 2021 Chevrolet Blazer. Lug nut tightens to 140 ft-lbs (190 Nm), takes a 22mm driver, runs on M14x1.5 threads.

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 2021 Chevrolet Blazer numbers above.

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