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Pontiac
Bonneville
12

Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Pontiac Bonneville

Problem Description and Possible Solution

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

Problem Data
RepairPal Verified
Average mileage: 159,104 (55,000–280,000)
5 model years affected: 1995, 1999, 2003, 2004, more2005
12 people reported this problem
Comments
Viewing 1 - 6 of 6 comments
Hardly ever need to turn on the heat in Tampa, but I needed it one night recently and got nothing but cold air out of the vents. The engine was warm from a 90 mile trip, but still no heat. A/C works, THANK GOD!!
Hot air comes out of heater vent and defrost vent does not come out of the front vents the pump is working but it just blows hot air
My drivers side blows hot air when on a/c and the passenger and rear blow cold air. Just recharged the a/c and made the problem worse.