GMC

GMC troubleshooting questions? Ask a mechanic for answers

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

Related GMC Questions
2005 GMC Sierra 5.3l at about 2000 to 3000rpms check engine
2005 GMC Sierra 5.3l at about 2000 to 3000rpms check engine light comes on with p0300 and p0300pd I have new coils, plugs and wires I also replaced the MAFs, and throttle body. I've done a fuel pressu… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
24,999 satisfied customers
2005 3500 Savanah van with Vortec engine. Would start for
2005 3500 Savanah van with Vortec engine. Would start for awhile with engine light blinking and running rough for a few miles, and then light solid and running like a new until the next time it was re… read more
R Clark
R Clark
Senior Police Mechanic
Associate of Occupational Studies
233 satisfied customers
Both turn signals not working and went out at same time;
Both turn signals not working and went out at same time; Flashers and everything else works. Have tried replacing fuses and the turn signal lever but neither fixed it. I think it is maybe a relay issu… read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
23,171 satisfied customers
I have a 2010 gmc savana 2500 LT, and it died the other day.
hi I have a 2010 gmc savana 2500 LT, and it died the other day. was cranking but starved of fuel so I changed the fuel pump and still nothing … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
2,126 satisfied customers
I HAVE A 2003 GMS SIERRA ITHA P0300 CODE OF MISFIRWE. THEY
I HAVE A 2003 GMS SIERRA ITHA P0300 CODE OF MISFIRWE. THEY HAVE DONE MANY CHECKS AND STILL CAN'T FIND PROBLEM. THEY WERE INSTALLING NEW O2 SENORS AND THE UPDATING SEEMS TO HAVE FRIED MY ECM. COULD THE… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
10,306 satisfied customers
2004 gmc 3500 savanaha 4.8 motor won't start intermit spark.
2004 gmc 3500 savanaha 4.8 motor won't start intermit spark … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
10,306 satisfied customers
I have a 2005 GMC Sierra 6.0 that we got from the auction.
I have a 2005 GMC Sierra 6.0 that we got from the auction. It had a check engine light for bad mass air sensor, replaced it and later got a code P0430 for catalytic converter, could this be something … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
10,306 satisfied customers
Its actually a gmc van, 2010 savana, no, its stuck in the
no, its stuck in the garage, won't start, won't turn over or crank, check engine light just flashes … read more
BOBBYSS
BOBBYSS
Automotive Repair/Damage Investigator
Associate Degree
14,714 satisfied customers
2005 gmc savana 2500 cargo van, interior front dome light
2005 gmc savana 2500 cargo van, interior front dome light very dim almost so dim it orange in color ? What can be causing this? I replaced bulb with nee bulb and it still dim aalso i noticed that when… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
2,126 satisfied customers
2005 GMC Savana van 2500 with 4.8 liter motor VIN #
2005 GMC Savana van 2500 with 4.8 liter motor VIN # ***** 116,000 miles I have a service van with 2 doors in the back and 2 on the side, motor oil and coolant levels are fine and the oil was changed 2… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Savana 3500: 2008 gmc savana 6.0L will not accelerate without
2008 gmc savana 6.0L will not accelerate without issue... truck loses power... then get p0300 code intermittently. idles rougher the i remember..when accelerating the engine gets loud and the valves s… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
gmc sierra: 2006 gmc sierra, recent purchase, check engine
2006 gmc sierra, recent purchase, check engine light does not come on with key in "run" position.… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,108 satisfied customers
GMC Envoy XL: GMC envoy 5.8L V8 check engine light came on
GMC envoy 5.8L V8 check engine light came on and when I am idling at a stop light it sounds like it is going to quit. I have a innova code reader and the codes that it says are 4 codes: P0171-generic-… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GM Colorado: I have a 2005 Colorado that demonstrates the following
I have a 2005 Colorado that demonstrates the following behavior: Sure it's a misfire in one of the cylinders… I was on line looking at forums on the issue, some say valve springs and valves… It bobble… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,108 satisfied customers
GMC Savana 2500: 2000 gmc savana 2500. 101,000 miles. Runs
2000 gmc savana 2500. 101,000 miles. Runs 5 miles, backfires, stops running, will not restart. Let it sit overnight, it will run another 5 miles and same thing.… read more
Mike Kelly
Mike Kelly
Auto Mechanic
Vocational, Technical or Trade Scho
2,509 satisfied customers
Just bought a 2003 gmc sierra with the 4.8L and it is
just bought a 2003 gmc sierra with the 4.8L and it is throwing codes P0300, and P0449. I replaced plugs and wires so far, but don't want to spend a fortune replacing un-needed parts that won't fix the… read more
Don Knight
Don Knight
Shop Manager/Technican
Associate Degree
1,695 satisfied customers
GMC Savana 2500: Dave Nova, Hi, You helped me yesterday with
Dave Nova, Hi, You helped me yesterday with GMC Savana 2500 4.8L. Code P0300. Mil light blinks at higher speed. Had crank sensor recalibrated at dealer. Still same problem… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
2,126 satisfied customers
GMC Savana 2500: Hi got a 2008 gmc savana van 2500 4.8l keeps
Hi got a 2008 gmc savana van 2500 4.8l keeps burning out low beam head lights it got two seal beam lamps. what is the cause and were is it located?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
2,126 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

2,126 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

19,453 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