GMC

GMC troubleshooting questions? Ask a mechanic for answers

Connect one-on-one with {0} who will answer your question

Related GMC Questions
I have a 2012 Terrain 2.4 & the screen defrost doesn't work
I have a 2012 Terrain 2.4 & the screen defrost doesn't work but there is plenty of heat from the other vents … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,466 satisfied customers
AC problems. No matter what temp setting you choose, hot,
AC problems. No matter what temp setting you choose, hot, really hot air blows everywhere accept the far passenger dash vent.It blows cool air. Go figure. Any ideas?… read more
BOBBYSS
BOBBYSS
Automotive Repair/Damage Investigator
Associate Degree
14,685 satisfied customers
Working on a 99 GMC Yukon V8. When we use the HVAC selector
Working on a 99 GMC Yukon V8. When we use the HVAC selector to change the mode from vent to Floor to defrost etc. there is an actuator making noise at the passenger side foot well behind the glove box… read more
Ron
Ron
Automotive Tech
Vocational, Technical or Trade Scho
39,720 satisfied customers
2003 Yukon SLT has no heat and cold air blows from the
2003 Yukon SLT has no heat and cold air blows from the defrost and floor positions only. Could it be the mode actuator or the blend door actuator?… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
Have an issue with AC only blowing from the floor vents and
Have an issue with AC only blowing from the floor vents and defroster vents. Not out of dash vents. AlsoNo difference between when the AC/recirculation buttons are pushed … read more
Dan
Dan
Dealership Technician
Associate Degree
2,511 satisfied customers
Noise under dash,near floor, just started, 2003 gmc Sonoma
noise under dash,near floor JA: How long has this been going on? Customer: just started JA: What is the model/year of your GMC? Customer: 2003 gmc Sonoma 4x4 extended cab JA: Are you hoping to fix thi… read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
17,493 satisfied customers
I just replaced the Mode Door Actuator on a 2012 Terrain. It
I just replaced the Mode Door Actuator on a 2012 Terrain. It now shifts air from the floor (previously the only location) to the defroster, but it still does not move air flow to the AC vents. Is ther… read more
sprinkles08
sprinkles08
Technician
High School or GED
18,999 satisfied customers
I have a 1990 gmc s15 jimmy and I'm having problems with
I have a 1990 gmc s15 jimmy and I'm having problems with hot air blowing in by my feet and the temperature selector is very hard to move!!… read more
Eric
Eric
Retired
N/A
37,731 satisfied customers
GMC Acadia SLE: Have 2011 gmc acadia, when i turn ac or heat
Have 2011 gmc acadia, when i turn ac or heat on, i get VERY weak flow of air, almost feels like not blowing out, but i can feel by putting hand near vent either cold or warm air. I checked cabin air f… read more
sprinkles08
sprinkles08
Technician
High School or GED
18,999 satisfied customers
GMC Envoy SLT: own 2004 gmc envoy air flow problem. all the
own 2004 gmc envoy air flow problem. all the air is directed to the floor. cannot get it to blow out of the dash vents… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon Denali: Dear GMC Mechanics,My 2003 Yukon Denali
Dear GMC Mechanics, My 2003 Yukon Denali air vent flap remains open even though I had the actuator replaced. Can you please let me know what controls the opening/closing of this flap? Is it the ECM or… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Acadia: I have a 2009 GMC Acadia- I understand that it
I have a 2009 GMC Acadia- I understand that it has multiple Air Blend Door actuators and one of mine is failing, I am just trying to determine which one. Drivers side heat works, but passenger side do… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
Can someone give me the names of these actuators or briefly
Can someone give me the names of these actuators or briefly describe what they do...I believe one is a defrost valve and one is passenger temp valve. The GM Part #'s are: 52402612 52402611 52402613 52… read more
Clifton B.
Clifton B.
nissan master auto tech
Associate Degree
4,981 satisfied customers
GMC Yukon XL Denali: 2001 GMC Yukon XL Denali 4WD 6.0 L Front
2001 GMC Yukon XL Denali 4WD 6.0 L Front heater and ac/heat control issues No heat in the front of the truck, rear heat works fine. Have checked the heater lines running into and out of the heater cor… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GM 1500 Sierra: I have 2002 GMC Sierra 1500. The heater vent
I have 2002 GMC Sierra 1500. The heater vent is stuck on defrost. I disconnected the battery and tried the recalibration thing, but no change. I took the cover off and got to the actuator, which I dis… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 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
242 satisfied customers
GMC Envoy SLE: Why would the air flow not completely switch
Why would the air flow not completely switch from defrost to dash vents on a 2004 GMC Envoy with a 4.2L engine ?… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
gmc 2500 the heater on my 04 gmc truck duel controls quit
the heater on my 04 gmc truck duel controls quit working on the driver side but works on the pass side how do i fix it… read more
GMC Tech
GMC Tech
SERVICE TECHNICIAN
Associate Degree
369 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

1,912 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

766 satisfied customers

16 years of experience

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

248 satisfied customers

GM, GMC, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics

Mike S.

Mike S.

ASE Certified Technician

241 satisfied customers

GMC N.A.I.S.E. Certified Auto-Mechanic

< 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