GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Related GMC Questions
I have a 2015 gmc duramax. I've had lots of code issues due
I have a 2015 gmc duramax. I've had lots of code issues due to def problems. … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
675 satisfied customers
I've got a 6 ltr in a 2003 gmc sierra 2500hd and at around
I've got a 6 ltr in a 2003 gmc sierra 2500hd and at around 2500 rpm the speed limit for the freeway its burning a lot of gas I was thinking about doing a ratio change to both difs from what I have kno… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
675 satisfied customers
2015 GMC 2500HD. Interior lights stay on. Also I get a
2015 GMC 2500HD. Interior lights stay on. Also I get a message that my drivers door is open. I have shut the door and tried to turn off the interior lights and cannot do so. All of the interior lights… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,894 satisfied customers
I have a 2005 gmc 2500hd 6.6 duramax. Slt. Resetting the
I have a 2005 gmc 2500hd 6.6 duramax JA: What is the model of your '05 GMC? Customer: slt JA: Are you fixing your vehicle yourself? What have you tried so far? Customer: resetting the ecm JA: Anything… read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
16,167 satisfied customers
Dec. Def says empty it's full is there a reset. 2015
Dec JA: What is the model/year of your GMC? Customer: Def says empty it's full is there a reset JA: What year is your GMC? Customer: 2015 Silverado 2500 duramax JA: Are you fixing your Silverado yours… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
Getting a service message on my exhaust fluid system and is
getting a service message on my exhaust fluid system and is transitioning to 65mph … read more
Gabriel Grey
Gabriel Grey
Master Service Technician
Associates
457 satisfied customers
I have a 2011 gmc 2500hd with 6.6 duramax im having problem
I have a 2011 gmc 2500hd with 6.6 duramax im having problem with my truck dieing when I hit a bump and check engine light flashing on then immediately back off code p2510 is showing when this occurred… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
6,449 satisfied customers
Actually its a GMC 2015 drama and my oil pressure at start
actually its a GMC 2015 drama and my oil pressure at start is 120 and stays there … read more
Todd M
Todd M
Owner
ASE Certification
1,877 satisfied customers
6 codes were up on my 2013 GMC Sierra 3500HD with 6.6 Turbo
6 codes were up on my 2013 GMC Sierra 3500HD with 6.6 Turbo Diesel. P2493 P245C P24C4 P2493(PD) P245C(PD) P24C4(PD) Please advise what to fix.… read more
Todd M
Todd M
Owner
ASE Certification
1,877 satisfied customers
2003 lb7 duramax, I had a problem with limp mode occurring
2003 lb7 duramax, I had a problem with limp mode occurring frequently but it would go away if I pushed on the wiring harness and deleted the codes.. went to the shop and they found out that it was loo… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
1,932 satisfied customers
My GMC 2500HD error message: "service trailer brake system"
My GMC 2500HD error message: "service trailer brake system" … read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
16,167 satisfied customers
2015 GMC Duramax. Turn ignition key on and everything lights
2015 GMC Duramax. Turn ignition key on and everything lights up as it should. Gauges adjust to correct readings etc. Turn key to start and everything goes out and starter doesn't even try to work, lik… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
957 satisfied customers
I have codes c0710, c0201, c0292 and u1826 on 2011 gmc
I have codes c0710 , c0201 , c0292 and u1826 on 2011 gmc sierra 2500hd with 6.6 duramax. Service traction control and service stabiltrak are on display with traction control light, abs light,and brake… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
675 satisfied customers
2004 GMC 2500HD with 6.6 Duramax LLY. Driven through deep
2004 GMC 2500HD with 6.6 Duramax LLY. Driven through deep water, stalled, turned over but wouldn't start, now won't turn over. Removed air filter intake hose at throttle body to find that the engine i… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Sierra 2500 HD SLT: I have a 2015 GMC 2500HD diesel with
I have a 2015 GMC 2500HD diesel with 20 inch Goodyear tires. For 5000 miles the ride was as smooth as silk. During service the tires were rotated front to back and then I had a bad vibration. It felt … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
GMC Sierra 2500 hd: I have a 2003 GMC Sierra 2500hd LB7 that
I have a 2003 GMC Sierra 2500hd LB7 that has recently developed issues with the fuel injection system. I scanned it to find it was throwing five codes. P0201 P0204 P0206 P0207 P2146. I know the for th… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Sierra 2500 HD Classic SLT: I have 2012 GMC Siera 2500HD
I have 2012 GMC Siera 2500HD that is giving trouble codes p2493 & p2495 both relating to egr cooler bypas sensor. what do I do to repair?… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,894 satisfied customers
GMC 2500 hd: Hi - my check engine light came on this morning
Hi - my check engine light came on this morning in my 2003 gmc 2500hd with a duramax. I just read the codes and got a p0101 and a p0404. At idle there seems to be an intermittent rattle that comes fro… read more
Expert
Expert
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