GMC Sierra Climate Control

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180 discussions


1999 GMC Sierra Heater Temp Control

1999 GMC SIERRA
Heater Temp Is Hot While Turned All The Way Up And Goes Cold When Turned Down Even Just One Notch. At Times, Heater Remains Hot Through All...
1 ANSWER
Asked by rsnide

1999 GMC Sierra Heater Fan & 4 Wheel High/low...

1999 GMC SIERRA
The Heater Defrost Fan Motor Works Intermitiately. Also It Appears To Quite Functioning When The Transmission Refuses To Shift Into 4 Wheel...
1 ANSWER
Asked by Rob Plance

1999 GMC Sierra Heater Inlet?

1999 GMC SIERRA
My Son (mistake #1) Was Driving My Truck And The Plastic Fitting For The Heater Inlet On The Driver's Side Broke Off Flush With The End Of...
3 ANSWERS
Asked by BurrowJ101

1999 GMC Sierra Heater Not Kicking Out Hot Air.

1999 GMC SIERRA
I Have Recently Been Having Problems With Getting Hot Air Out Of My Heater Vents. I Thought It Might Have Been A Stuck Thermostat, So I...
1 ANSWER
Asked by zachoyleach

1999 GMC Sierra Cabin Air Filter

1999 GMC SIERRA
Where Is It ??? I Know That It's Under The Glove Compartment But Can't Figure How The Guy At Jiffy Lube Got To It So Easy.
1 ANSWER
Asked by bfcbiker

1999 GMC Sierra Heating Problems

1999 GMC SIERRA
Since The Weather Turned Cold, When I Call For Heat In The Cab Of The Truck I Only Get Cold Air. I Have Checked The Hoses Going To The...
1 ANSWER
Asked by John Martin

1998 GMC Sierra Heater Contol Valve

1998 GMC SIERRA
Where Is It? & How Best To Replace-thanks
1 ANSWER
1 IMAGE
Asked by Johnny Gore

My Air Conditioner Only Works On One Speed.

1998 GMC SIERRA
My Air Conditioner Only Works On One Speed.
1 ANSWER
Asked by derep2000

1998 GMC Sierra Max Ac On Switch

1998 GMC SIERRA
Hi My Truck Used To When You Have The Ac On You Could Turn The Temp. Switch All The Way To Max Position And With The Fan On All The Way Or...
1 ANSWER
Asked by petermsatter

1998 GMC Sierra Heater Fan Problem Continued

1998 GMC SIERRA
Hello Again, I Am The Guy With The Gmc Sierra I Replaced The Controll Console For The Haeter And Air Cond- I Replaced The Relay For The...
1 ANSWER
Asked by adubber

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