GMC tire pressure light reset
To reset the tire pressure light on a GMC (Most models): With the parking brake set and ignition ON/RUN (engine off), press and hold both lock and unlock on the key fob until the horn chirps. Release air from each tire in GM's specified order until the horn confirms it. Refill all tires to placard pressure once done.
Key takeaways
- Inflate every tire to the door-jamb pressure first - the light is telling you something.
- 1 procedure listed for GMC, by model year or family.
- Some years need an OBD-II or TPMS tool - no button sequence exists.
- If it does not work, confirm your exact year in the owner's manual.
Most models
Needs an OBD-II or TPMS tool
- With the parking brake set and ignition ON/RUN (engine off), press and hold both lock and unlock on the key fob until the horn chirps.
- Release air from each tire in GM's specified order until the horn confirms it.
- Refill all tires to placard pressure once done.
A dedicated GM TPMS relearn tool is sold specifically for GMC/Buick/Cadillac/Chevrolet and is the more reliable route.
Sources: aviondemand.com - GM TPMS: The Setup and Relearn Procedures, Amazon listing - VXDAS TPMS Relearn Tool for GM vehicles (Cadillac/GMC/Buick 2006-2026) - independent references, not the manufacturer.
Tools that help
These fit any car. A gauge that reads to 0.5 psi takes the guesswork out of the relearn.
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