GMC

GMC troubleshooting questions? Ask a mechanic for answers

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

Related GMC Questions
Got a encoder motor issue. No. I got a new encoder motor and
No. I got a new encoder motor and installed it and it seemed to work but it will sporadically grind in reverse and when I think it's in park it will roll. So I took it off and now can't get it to go into neutral. … read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
23,499 satisfied customers
I've been working on my '99 GMC Sierra I've been having
I've been working on my '99 GMC Sierra I've been having problems with the four wheel drive I changed the fluid in it because it was started making a weird noise I thought from the transfer case and st… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
23,499 satisfied customers
My 07 H3 Hummer will not drive in 4H (unlocked), it acts
My 07 H3 Hummer will not drive in 4H (unlocked), it acts like it's in neutral with a "whining" noise … read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
High School or GED
15,929 satisfied customers
Pretty sure I had a yearly account but will have to look
pretty sure I had a yearly account but will have to look further. None the less have a 2012 Sierra 1500 5.3 SLT - 4x4 was working fine but of course as soon as it snows it buggered up. 4x control dial… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
23,499 satisfied customers
1988 GMC Sierra SLT K1500 4x4 Single cab long bedwon't
1988 GMC Sierra SLT K1500 4x4 Single cab long bed*****won't engage what I shift the transfer case into 4lo or 4hi. The transfer case is functioning properly cause if I shift into 4lo it basically is 2… read more
J Hall
J Hall
retired
none
1,603 satisfied customers
My 2005 gmc sierra hd 1500 went to nuetreal when i came to a
my 2005 gmc sierra hd 1500 went to nuetreal when i came to a stop at a light and the only way i could get to move was to put it automatic four wheel drive . … read more
AutoDoc1
AutoDoc1
High School Diploma
10,659 satisfied customers
I'm wondering why myis not fully engaging and keeps slipping
I'm wondering why my*****is not fully engaging and keeps slipping out on my 2003 GMC Sonoma SLS crew cab … read more
Jay
Jay
Shop Forman / Lead Tech
Vocational, Technical or Trade Scho
27,159 satisfied customers
I am replacing the transfer case 4wd selector motor on my
I am replacing the transfer case 4wd selector motor on my 2005 gmc duramax 3/4 ton pickup. It was in 4wd when motor was removed. how do I align the new motor during instillation? … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
37,089 satisfied customers
I have a 2005 gmc envoy xl. There is a noise that occurs in
I have a 2005 gmc envoy xl. There is a noise that occurs in the front left side when I accelerate in***** It sounds like it sounds like two two things rubbing against each other. the sounds especially… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
I have a 2002 GMC Sierra 1500. The 4wd randomly quit
Hello. I have a 2002 GMC Sierra 1500. The 4wd randomly quit working. I have no service messages, the selector switches continue to work normally. I can hear and feel the truck switch from 2-4Hi and 4H… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
1999 Yukon SLT: Transfer Case. A week ago, started hearing a
1999 Yukon SLT: Transfer Case. A week ago, started hearing a rotating drive line noise, like a break pad hitting a bad spot on the drum or disk every revolution, speeding and slowing down to a stop. I… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
GMC Sierra 2500 HD Classic SLT: I have a 2009 GMC 2500 HD (Diesel).
I have a 2009 GMC 2500 HD (Diesel). The vehicle seems to be locked in 4-low. The 4-WD indicator dial lights up all the lights and then goes out. The "Service 4-Wheel Drive" message comes up in the ind… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
37,089 satisfied customers
GM Yukon: Hey I got 2000 gmc Yukon Denali it's stuck in 4low
Hey I got 2000 gmc Yukon Denali it's stuck in 4low n front wheels not locked in 4x4 just rear working in low front shaft not spinning to front rear but it's stuck in 4 low… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon XL 1500: I have a 2003 Yukon XL, 83,000mi. The 4WD
I have a 2003 Yukon XL, 83,000mi. The 4WD doesn't engage. Normal is the 2WD light is on, when I push 4WD high the light changes to 4 Hi but the front end does not engage. There is no Service 4WD in th… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Envoy Denali: I have a 2007 envoy Denali 5.3 Lt the TC
I have a 2007 envoy Denali 5.3 Lt the TC is noisy when engaged in 4w auto & 4W H (not all the time) sounds to me like the gear train is not totally engaged as there is low level whine from it. I had t… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC K1500 Sierra 4x4: I have a 1996 gmc 1/2 ton 4x4. Four wheel
I have a 1996 gmc 1/2 ton 4x4. Four wheel drive wont engage. Push buttons on dash flash when trying to lock in. I can hear motor working on transfer case when trying to lock in. Have replaced actuator… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
On my 1997 Sierra, the front wheels will not lock in. The
On my 1997 Sierra, the front wheels will not lock in. The servos work. I asked this question to Cam 5 minutes ago and gave my card info, but could not view the page. I would still like the answer, but… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
37,089 satisfied customers
GMC Yukon XL 1500 SLT: I have a 2001 Yukon XL 1500 with the
I have a 2001 Yukon XL 1500 with the Autotrac transfer case (I think, it has the auto button on the dash). My question is should the front shaft be turning when in 2-HI? I started noticing a humming n… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
37,089 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

32,419 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

904 satisfied customers

24 years of experience diagnosing & repairing

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Mike S.

Mike S.

ASE Certified Technician

256 satisfied customers

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

George H.

George H.

ASE MasterTechnician

233 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