I have an 05 Vibe and not long after changing over from winter to all season tires the TPS light comes on w/o cause. What is involved in replacing the module/sensor?
Have you tried resetting the Tire Pressure Monitoring System (TPMS)?
There are no 'sensors' for TPMS. 2005 uses the ABS wheel speed sensors to determine differences in rotation. (Don't let a tire shop charge you extra for sensors "inside the tires"- there's only air in there!) If the ABS sensor was bad, you'd get lights for that.
From the manual:
To reset (initialize) the system:
1. Park the vehicle at a safe place and apply the parking brake. Turn the engine off.
2. Turn the ignition to ON with the engine off.
3. If the low-tire pressure warning light is on, push the SET (reset) button for a few seconds. The low-tire warning light should go off. The reset button is on the instrument panel to the left of the steering wheel.
4. Press and hold the SET (reset) button until the low-tire warning light comes on and flashes on/off three times. The tire pressure warning reset button starts the reset (initialization) process.
If the low-tire pressure warning light does not flash when you hold the reset button the system may be malfunctioning and needs service. See your GM dealer for service.
The system completes the reset (initialization) process after driving at vehicle speeds of at least 19 mph (30 km/h) to 62 mph (100 km/h) for more than one hour.
Do not push the SET (reset) button while driving, if you do the initialization process will not be performed. The initialization process can take up to approximately one hour of driving under the following conditions:
• The vehicle speed is between 31 mph (50 km/h) and 62 mph (100 km/h).
• The roads are dry, smooth and straight.
• The number of passengers is one or two (including the driver).