GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Related GMC Questions
Crazy issue. might be electrical gremlins. How much for the
Crazy issue. might be electrical gremlins JA: What is the model/year of your GMC? Customer: How much for the service? JA: What year is your GMC? Customer: How much for the service? JA: Are you fixing … read more
Mazda Ed
Mazda Ed
Lead Technician
High School or GED
2,269 satisfied customers
2004 gmc yukon xl hvac issue -blowing cold air on drivers
2004 gmc yukon xl hvac issue -blowing cold air on drivers side and hot on passangers? … read more
Tony McCarthy
Tony McCarthy
Owner Technician
460 satisfied customers
I get P0128 error code. Research says thermostat, temp
I get P0128 error code. Research says thermostat, temp sensor, or cooling fan. Thermostat and temp sensor a bitch to change. Cooling fan runs when cold, spins with a little resistance when engine off.… read more
roybelding
roybelding
Master Tech/Trainer
8,351 satisfied customers
My 2006 Sierra 1500 AC blows hot air on the driver's side
My 2006 Sierra 1500 AC blows hot air on the driver's side while cold air is blowing on the passenger. A blend door actuator has been replaced and problem still exists. … read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
The AC & Heater only flows out of defroster instead of the
The AC & Heater only flows out of defroster instead of the floor and cab of my 1990 GMC Sierra 1500 … read more
roybelding
roybelding
Master Tech/Trainer
8,351 satisfied customers
2006 GMC Yukon Denali. My front blower is working, when I
2006 GMC Yukon Denali. My front blower is working, when I rotate dual Climate controls to heat both sides are cold. The defroster also will not blow warm air. Fan works but no heat.… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,063 satisfied customers
GM GMC Sierra 2500HD: I have a 2004 GMC Sierra 2500HD, with
I have a 2004 GMC Sierra 2500HD, with a duramax and digital climate controls. When I have the AC on it will be cold then all of a sudden it goes full heat. If I shut it off and restart it it goes cold… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,834 satisfied customers
GMC Sierra 1500: i have a 07 new body style sierra 1500, ac
i have a 07 new body style sierra 1500, ac blows cold then to hot, refrigerant level is good, clutch engages and cycles, low pressure switch does not have the green tint, actuator and blow motor are f… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
30,359 satisfied customers
GM sierra lt: i have a 2001 sierra. the climate control system
i have a 2001 sierra. the climate control system stays in heat. even with fan in off position i get hot air out of defrost and floor vents. i changed the blend door. before that it was stuck in cold. … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
30,359 satisfied customers
I have a 2006 GMC Z71 extended cab truck. It has got to where
I have a 2006 GMC Z71 extended cab truck. It has got to where it will when I am running the AC cold air will be coming out and then all of a sudden it becomes extremely hot air. It does this with all … read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GM yukon denali xl: I have a 2003 yukon denali xl. after a
I have a 2003 yukon denali xl. after a dead battery the front dual climate control began to not function properly, heat would blow on one side and ac on other. Then no cold air at all. it still blows … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Envoy: The ac/heat blower on my 2004 GMC Envoy continues
The ac/heat blower on my 2004 GMC Envoy continues to quit working. We have replaced the vent actuator and the fan speed control x2 and today as usual the fan stopped blowing again on all speeds. The a… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
Change out illustrations or instructions for procedure to
change out illustrations or instructions for procedure to change out 89018365 recirc door acutator on 2005 GMC yukon denali… read more
Randall C
Randall C
Auto Technician / Consultant
Vocational, Technical or Trade Scho
12,730 satisfied customers
GMC Sierra 1500 HD Classic SLE: 2003 climate controll
2003 gmc sierra 1500 hd climate controll problem The drivers side vents blow cold air no matter what the temp is set at it is the digital duel climate controll type tried the reset proceedured no chan… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
30,359 satisfied customers
GMC Sierra 1500: 2003 gmc sierra 1500, drivers side cabin heat
2003 gmc sierra 1500, drivers side cabin heat problems. -heat will come on by it self on the drivers side only-wont turn off regardless what you do. AC works fine on passengers side. In the winter it'… read more
Randall C
Randall C
Auto Technician / Consultant
Vocational, Technical or Trade Scho
12,730 satisfied customers
GMC 2500 HD: 04 GMC Sierra - air only blowing out front vents
04 GMC Sierra - air only blowing out front vents . I get all the correct voltage to mode actuator i changed the actuator . When i start the vehicle it will power cycle the actuator . but the voltage t… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC Sierra 3500 Classic SLE: Hi Cam how are you? Im back with
Hi Cam how are you? I'm back with another question. back in Oct 11 I asked about a problem I had with my truck's A/C switching from cold to heat on driver's side thanks to your answer that problem was… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,834 satisfied customers
GMC Seirra: I have a 2003 GMC Sierra with dual climate control.
I have a 2003 GMC Sierra with dual climate control. The heat on the drivers side works intermittantly. If I adjust the slide up and down, it will usually out put heat. I have replaced the dashboard co… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,834 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,834 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,589 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

675 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

285 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

230 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x