Pontiac Bonneville Problem Report
Pontiac Bonneville HVAC Mode/Temperature Door Actuators May Fail
The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.
warm air on driver side and cold on passanger - Visitor
hot air rt side cold air left side - Visitor
Will only direct air out of defrost and floor, not the front vents unless driving for a long time, and then only a minimal amount comes through. Once the car is parked, it vents through the defrost and heater again. Inspected vacuum pots under dash, couldn't find leak. Verified that engine vacuum was present. There is a control module that 6 small, multicolored lines connect to under the passenger side. This is where the automatic climate control designates which line has vacuum to actuate the controls for delivery. I wasn't able to do anything with it however. Still researching the issue. - Visitor
hot air on driver side and cool air on passenger side how can this be fixed - Visitor
HEATER NOT SWITCHING OVER TO BLOW HOT AIR BLOWS COLD AIR ON FLOOR. - Visitor
My controls are stuck in the defrost/floor mode. - Visitor
Air flow out Dash and floor only. Looking for a fix! I have not fixed it yet and was wondering where to start. - Visitor
Hot air on the driver side, cold on the passenger side. - Visitor
ac works good the problem is that air come on downside only. what causes it? - Visitor
driver side warm pass side cool ,not repaired - Visitor
AC/heat only coming from defrost and floor vents, despite what mode is used. - Visitor
First AC blowing hot air on drivers side then a couple Months later also passenger side. No ac at all now. - Visitor
Was never fixed. - sushi57
Well it's blowing cold air but if I feel where the heater core is it's hot so I don't no y it doesn't push hot air out the vents - Visitor
Driver's side air flow intermittent, both a/c and heat. Coolant leaks out somewhere... not obvious to mechanic. - Visitor
Warm air on the driver side and cool air on the passenger side. - Visitor
it only blow air out at window and not on dash - Visitor
blower fan first begin having issue, so replaced it. Shortly thereafter mode actuator doors quit working in all positions. - Visitor
Battery went dead, replaced and now the heat don' come on. You can turn the key off and back on and get heat for a min or so then the heat setting flashes and goes cold. - Visitor
when a/c on cold on left, hot on right - Visitor
Is airflap actuator the same thing as mode actuator
I'm thinking 1 or more hvac actuators r bad. Can anyone tell me which acuator is bad. Its been...
Heater only blows out dash vent and still the same after installing a new mode actuator
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail...
the compressor has been checked, car is full of freon, may be temperature control module or tem...