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.
Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on GMC 1500 Pickup
Average mileage: 158,000 (151,000–165,000)
13 people reported this problem
1996 GMC 1500 Pickup 165,000 mi, Visitor
replace the control board and the blend door.motor
1998 GMC 1500 Pickup 151,000 mi, Visitor
The air is hot and i cannot change the air delivery. can anyone help?