TreadCompass

GMC C1500 Lug Nut Torque

The GMC C1500 lug nut torque is 140 ft-lbs (190 N·m) for 1996–1999 and 120 ft-lbs (163 N·m) for 1988–1995.

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GMC C1500 · 1988–1999

The spec changed over the years. Pick your year above, or find it here:
1996–1999140 ft-lbs · 190 N·m
1988–1995120 ft-lbs · 163 N·m
  • ✓ Tighten in a star pattern, in two passes, with a torque wrench (not an impact gun)
  • ✓ Re-check the torque after the first 50–100 miles
  • ✓ Confirm against your owner’s manual; aftermarket wheels can differ

Source: TreadCompass vehicle fitment database. Page updated November 2026. Specs can vary with aftermarket wheels and lug hardware, so always confirm with your owner’s manual.

Factory tire sizes for the GMC C1500

Compare prices across retailers for your size.

225/75R151988–1999 · Compare prices →235/75R151988–1999 · Compare prices →

Other GMC models

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GMC C1500 lug nut torque FAQ

What is the lug nut torque for a GMC C1500?

The GMC C1500 lug nut torque is 140 ft-lbs (190 N·m) for 1996–1999 and 120 ft-lbs (163 N·m) for 1988–1995. Tighten in a star pattern with a torque wrench, then re-check after the first 50–100 miles.

Do all C1500 trims use the same lug nut torque?

Yes. Every C1500 trim in our database uses the same lug nut torque for a given model year.

Has the GMC C1500 lug nut torque changed over the years?

Yes. It is 140 ft-lbs for 1996–1999 and 120 ft-lbs for 1988–1995. Pick your year above to see the exact spec.

What size tires come on the GMC C1500?

Factory tire sizes include 225/75R15 (1988–1999) and 235/75R15 (1988–1999). Check the sidewall of your current tires to confirm yours, then compare prices for that size above.

New to torquing wheels? See how to torque lug nuts and common questions.