heating system

[Ktlplxm]

Here's one for the troubleshooters, my heat isn't working properly, but only on the driverside. Passenger heat works perfectly. DS is a good 8-10 degrees cooler. Any ideas?

[wreckwriter]

Hmmmm.... vacuum leak not letting a door close/open fully?

[Ktlplxm]

I was thinking the same thing. Does anyone know where the appropriate vacuum lines are located?

[Panzer Leader]

Did you check to make sure you are operating in a single mode function? You may have it in dual zone.

[Ktlplxm]

Did you check to make sure you are operating in a single mode function? You may have it in dual zone.

Yeah I did. I checked it in both dual and Single. The difference is greater when in dual mode. the other night I just put it in dual, closed all of the driver's side vents and let the other side warm everything

[GRRRR8]

The drivers side temp door actuator is not working correctly.

[RapidG8GXP]

Take it in and have a competent mechanic diagnose it. (WARRANTY)

[Ktlplxm]

Take it in and have a competent mechanic diagnose it. (WARRANTY)

I don't think we have any competent ones around here. They'd more likely than not say it was caused by a loose glove box door, which in turn was caused by a rag laying in it, which was put in when they couldn't fix the glove box rattle. I really don't want the dealership touching anything until its a last result. Everytime they take something apart and put it back together they create a noise. I'd rather be cold through the winter, or just do what I did before and let the passenger side heat the cabin

[edfiero]

I think I have the same problem. Noticed it a few weeks ago, that the drivers side appeared to have much less heat than the passengers side. (Yes, have it in single zone mode). I hadn't troubleshoot the problem any further because I havent been driving the G8 since it started snowing. Let us know what you find out.

[99-LS1-SS]

I don't think we have any competent ones around here. They'd more likely than not say it was caused by a loose glove box door, which in turn was caused by a rag laying in it, which was put in when they couldn't fix the glove box rattle. I really don't want the dealership touching anything until its a last result. Everytime they take something apart and put it back together they create a noise. I'd rather be cold through the winter, or just do what I did before and let the passenger side heat the cabin

I TOTALLY agree with you!

[GRRRR8]

This is pretty easy to get at.

Remove the lower dash panel and then the console side panel. You will see it(facing you/gas pedal) Tap on it and see if it starts working.

Its called the left side temperature actuator.

[Ktlplxm]

Thanks Charlie

[Panzer Leader]

Find another Dealer

[Ktlplxm]

Find another Dealer

Often easier said than done. Good dealerships that don't want to cop out on their responsibilities are few and far between.

[WickedMom]

I would say, if possible, scan the car. The HVAC actuators will set codes if stuck...B0408 I think should be there if the actuator is not responding properly.

[Ktlplxm]

Ill check that. Would that throw a dtc in the dic?

[WickedMom]

I don't believe so... I also checked for any bulletins, don't see any. I think it would require a scan, maybe onstar can do it.

[-Ray-]

These might help locate the actuator.

[Devilish34]

I don't believe so... I also checked for any bulletins, don't see any. I think it would require a scan, maybe onstar can do it.

or a dash hawk??