Remove glove box locate the blend door actuator black odd shaped box with metal ring.
1998 buick regal blend door actuator.
No parts for vehicles in selected markets.
First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
A computer assigned to this duty controls the blend door actuators.
An actuator can go bad in of two ways.
I did purchase a air door actuator but can t find it.
Same problem on my 98 regal gs.
Buick 1998 regal 3 8l v6 supercharged heat air conditioning heater blend door actuator.
1998 black silver regal gs 140 000 mi credit goes to where i originally found the solution cannot remember where on the web read practically every post on this board concerning the blend door actuator but it worked like a charm for me so if it helps someone get the ac back with summer upon us then it may help.
Remove the box and manually turn the blend door shaft it was attached to.
The blend door actuators in a buick are electrically operated by blend door motors.
These are tied into several sensors that detect the outside temperature to compensate for incoming air inside air temperature and even a sensor to signal when a door.
Heater blend door actuator connector.
Heater blend door actuator connector.
Have done some research and almost everything leads to the blend door actuator.
If you get cold air it s the actuator you removed.
No parts for vehicles in selected markets.