How to Reset the Tire Pressure Light (TPMS) on a Chevrolet HHR

1. Set the parking brake and turn the ignition switch to ON/RUN with the engine off.
2. Press and hold the RKE transmitter's LOCK and UNLOCK buttons together for about five seconds until the horn sounds twice, showing learn mode.
3. Starting at the driver side front tire, remove the valve cap and raise or lower the tire pressure for about eight seconds until the horn chirps.
4. Repeat for the passenger side front, passenger side rear, then driver side rear tire, following each corner's turn signal.
5. After two more horn chirps, turn the ignition switch to LOCK/OFF.
6. Set all four tires to the pressure on the Tire and Loading Information label and replace the valve caps.

• You have two minutes per tire; if time runs out, turn the ignition to LOCK/OFF and start over from Step 2.
• A TPMS diagnostic tool can also match the sensors; see your dealer for that service.

Source: 2011 Chevrolet HHR owner's manual, PDF pages 335, 336. 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.