I would have the tech read the service manual:
"The Tire Pressure Monitor (TPM) system notifies the driver when a significant loss of tire pressure occurs in any of the 4 tires.
Important: The vehicles spare tire is equipped with a tire pressure sensor; however, the system does not monitor the spare tire pressure. The purpose of this sensor is to allow the spare tire to be included in a tire rotation. For more information, refer to Tire Pressure Sensor Learn."
__________________
Black Sheep Hummer Squadron
(ME TOO)
|