How to Reset the Tire Pressure Light (TPMS) on a GMC Sierra 2500HD/3500HD

1. Set the parking brake and place the vehicle in Service Mode.
2. On the DIC, scroll to the Tire Pressure screen under the info page.
3. Press and hold the thumbwheel (uplevel DIC) or the trip odometer reset stem for about five seconds (base DIC), then confirm yes if asked.
4. Wait for the two horn sounds and the TIRE LEARNING ACTIVE message.
5. Hold the relearn tool against each tire sidewall near the valve stem and press its button, starting with the driver side front tire.
6. Continue in order: passenger front, passenger outer rear, passenger inner rear, driver outer rear, driver inner rear, then turn the vehicle off and set all six tires to the recommended pressure.

• There are two minutes for the first tire and five minutes overall, or the process must be restarted.
• Single rear wheel models use an auto learn process: stationary about 20 minutes, then up to 10 minutes of driving at 20 km/h (12 mph) or more.

Source: 2026 GMC Sierra 2500HD/3500HD owner's manual, PDF pages 330, 331. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.