Service VME - Inside Air Temperature Sensor Noisy

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

This message concerns Inside Air Temperature sensor noisy on Seville. Some owners of 1998 through 2002 Cadillac Sevilles may comment that they hear a noise in the left side of the instrument panel on cold starts. This noise may be described as a grind, growl, hum, whine, or squeal. They may also comment that they hear a fan noise while driving. This condition may be caused by the Inside Air Temperature sensor. The sensor has a small fan motor which pulls air across the sensor. It was found that if the fan speed is too high it will cause a vibration and noise. The fan motor was changed to control the speed in March, 2002, at VIN 2U254713. There was no part number change, but GMSPO stock was purged of the old sensor assembly. The part number for this piece is 25640104.

Thank you, this is John Woodrich, Brand Quality Manager for the Seville.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.