GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Related GMC Questions
Power window on passenger side not working. Fuses ok switch
yes fuses ok switch seem ok but no power to window. … read more
molurch
molurch
Owner
Vocational, Technical or Trade Scho
941 satisfied customers
Will not run with the MAP sensor vacuum hose connected.
will not run with the MAP sensor vacuum hose connected. Idles good when not connected but will not run when put in gear without working the gas peddle. … read more
Pete
Pete
Mechanic
Construction, Plant Fitter
136 satisfied customers
I had trouble with my 1994 GMC C2500 5.7l stalling when I
I had trouble with my 1994 GMC C2500 5.7l stalling when I put it into gear had no power miss firing no check engine light so I have replaced the IAC, TPS, Fuel pump, Mapp Sensor engine coolant temp Se… read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,357 satisfied customers
My 2006 GMC Denali only blows air thru the dash to the
My 2006 GMC Denali only blows air thru the dash to the windshield. I can select the front vents or floor but nothing comes out of the front vents or floor, only the dash to the windshield. It still he… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
Chevrolet gmc: i have a 2003 gmc 2500 6.0 and get reduced engine
i have a 2003 gmc 2500 6.0 and get reduced engine power at random times, it might happen two times in a row or once and then nothing for weeks or months . i have a check engine light on that says mass… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
Gmc K2500 Sierra XC 4x4: Have a 2002 gmc 2500, the air only
Have a 2002 gmc 2500, the air only blows out of defrost wondering if anything I can check without taking to shop?… read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
285 satisfied customers
1994 GMC ac air control is stuck on the top air blowing on
1994 GMC ac air control is stuck on the top air blowing on defrost can't get it to move to other levels. How do I fix that… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
GMC Sierra 1500: 94 gmc sierra pickup. I have power to transmission
94 gmc sierra pickup. I have power to transmission switch but no power to the actuator when I shift to 4 wheel. high or low… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
i have a 03 gmc safari.... i cant redirect airflow it on ly
i have a 03 gmc safari.... i cant redirect airflow it on ly blows on the dash.... i found a vacuum line in the engine compartment unhooked... dont know where it goes.... its coming off a tee.... i kno… read more
supermechanic
supermechanic
Service consultant
Vocational, Technical or Trade Scho
10 satisfied customers
GMC: 2000 chevy s10 no air comes out of heater goes to defrost
2000 chevy s10 no air comes out of heater goes to defrost other outlets work fine it was real cold down to zero this winter turned on the heater herd a loud thump then only came out of defroster ac wo… read more
BigBob
BigBob
Service Manager
High School or GED
2,846 satisfied customers
GMC Envoy SLE: I have a 2002 GMC Envoy SLE and have developed
I have a 2002 GMC Envoy SLE and have developed an ac problem. I am getting air out of my vents and my defrost but not my floor vents or rear vents. I think an actuator has gone out after a battery rep… read more
tripletauto
tripletauto
Shop Foreman
Associate Degree
140 satisfied customers
GMC Safari Van: I have a 2000 gmc safari, v6, automatic, with
I have a 2000 gmc safari, v6, automatic, with 112,000 miles. While traveling on level ground the a/c and vent all work fine but when I start up a grade and have to accellerate the ac will loose vacuum… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
gmc safari: hi, i have a 2002 gmc safari van and the air cond.
hi, i have a 2002 gmc safari van and the air cond. is stuck in defrost/floor mode. when you move the switch from max air to regular air and then just to the vent mode there is no hissing if you will (… read more
Mark
Mark
Line Technician
Associate Degree
339 satisfied customers
GMC K1500 4x4: I pulled the engine for a rebuild and is now
I pulled the engine for a rebuild and is now back in. A/C worked b4 the engine was pulled, does not work now. Also, A/C/heater control unit in dash does not move air flow from dash to face to floor. B… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Jimmy: I have a 99 gmc Jimmy My vent control Dosent
I have a 99 gmc Jimmy My vent control Dosent work. Im unable to control where I would like the air to vent out of. It seems to b stuck on defrost only. It will not send air to the feet,face, or any ot… read more
tripletauto
tripletauto
Shop Foreman
Associate Degree
140 satisfied customers
What are the wiring positions that connect to the passenger
what are the wiring positions that connect to the passenger side power window switch in an 87 gmc vandura. to be more specific: i need to know which wires go to which positions inside the black plasti… read more
don
don
fleet superintendent
Vocational, Technical or Trade Scho
12 satisfied customers
GMC s-10: I have a Chevrolet S-10 4x4 . no heat from floor
I have a Chevrolet S-10 4x4 . no heat from floor vents . great heat from all other vents. DO YOU NEED TO REMOVE DASH TO REMOVE HEATER BOX IF CONTROL VALVEs is broken.… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC Sierra 1500: 4l60e transmission problems I rebuilt the
4l60e transmission problems I rebuilt the transmission to replace the broken sunshell gear and went ahead and replaced the 3-4 clutches. When put it reverse there is a thump at certain points (went aw… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 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

1,823 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