Here's how to reset the TPMS light:
1. Inflate Tires to Proper Pressure: Check the sticker on your driver's side doorjamb or your owner's manual for the recommended tire pressure for your vehicle. Inflate all four tires to the specified pressure using a reliable tire gauge.
2. Drive the Vehicle: Drive the vehicle for about 10-20 minutes at speeds above 20 mph (32 km/h). This allows the TPMS sensors to re-register the new tire pressures.
3. Check the Light: After driving, check if the tire pressure warning light has turned off. If it's still on, there might be a more serious issue.
If the light remains on after this:
* Check Tire Pressure Again: Double-check your tire pressure. Even a slight underinflation can trigger the light.
* Check for Leaks: Look for any slow leaks in your tires.
* Faulty Sensor: One or more of your TPMS sensors might be malfunctioning. This requires professional diagnosis and potentially sensor replacement.
* Low Battery in Sensor (Less Likely on 2002): While less common in older systems, a low battery in a sensor could cause issues. A mechanic would need to check this.
Important Note: The 2002 Monte Carlo likely has an indirect TPMS system (meaning it doesn't have individual pressure sensors in each tire, but rather relies on wheel speed sensors to detect a significant difference in tire diameter caused by low pressure). This makes it less precise than direct TPMS systems. It's still crucial to regularly check your tire pressure with a gauge, regardless of the light's status.
