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 2005 GMC 5500 Topkick with a 6.6L LMM engine and it
I have a 2005 GMC 5500 Topkick with a 6.6L LMM engine and it is throwing a P0522 code. I have done a continuity test on the wires from the ECM to the sensor and all seem good. I have also put a new se… read more
Roy
Roy
shop foreman
Associate Degree
5,116 satisfied customers
05 gmc yukon denali 6.0. on first initial start up, starts
05 gmc yukon denali 6.0. on first initial start up, starts up for 2-3 seconds and shuts off right away. after that just cranks unless you purge by key on and off, then it will start up again for 2-3 s… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
Replaced crank sensor fuel pressure is 60lbs 11.0 volts to
replaced crank sensor fuel pressure is 60lbs 11.0 volts to crank sensor smell fuel cranks but no start … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,912 satisfied customers
2005 gmc yukon. the 4x4 selector switch will blink when
2005 gmc yukon. the 4x4 selector switch will blink when turning the key then goes off and does not come bak on. replaced the tccm still the same. wiring checked ok power and ground.… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
8,822 satisfied customers
2006 GMC Envoy AWD 3.4. The ECM failed and needed replacing.
2006 GMC Envoy AWD 3.4. The ECM failed and needed replacing. I ordered a new on from ACDELCO and installed it. It will not communicate, eother with my J2534 programmer or my snapon scanner. No crank. … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
I cannot get the passlock system to reset. I had to rebuild
I cannot get the passlock system to reset. I had to rebuild the engine, and now that we are done, I am trying to get it running. But the secuirty light comes on, and no cranking … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
Linking error on DLC. Gmc Safari operating fine. Shut down
Linking error on DLC. Gmc Safari operating fine. Shut down at 50 mph. Will not start. Towed home. All fuses and CB fine. Power at orange and good ground on two black. Purple wire nothing. Replaced fue… read more
Tool Hut
Tool Hut
Owner
540 satisfied customers
I have a 1997 GMC Safari AWD van, recently I changed the
Hi, I have a 1997 GMC Safari AWD van, recently I changed the catalytic converter and reset the computer to get it inspected. I was told I needed to drive the van about 100 miles before the computer wo… read more
Eric Gardner
Eric Gardner
Fleet Manager
Bachelor's Degree
238 satisfied customers
Hal. 1996 gmc safari. p300. data stream showed cyl 1&6. cap
Hi Hal. 1996 gmc safari. p300. data stream showed cyl 1&6. cap and rotor replaced. no diff. plugs. no diff. fuel pressure up to 60 then drops to 20 as soon as pump quits. new regulator and Delphi pump… read more
Clayso
Clayso
Shop Owner Master Technician
ASE Master Certified Automobile Technician
879 satisfied customers
1999 GMC suburban 350 engine. Engine starts, runs 5 to
1999 GMC suburban 350 engine. Engine starts, runs 5 to twenty seconds and then dies. Have changed fuel pump once and relay many times, also changed oil pressure sensor. security light does not stay on… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
I am working on a 1997 GMC 3500 4+4 350. The vehicle will
I am working on a 1997 GMC 3500 4+4 350 . The vehicle will not run without poring gas in the throttle body. The fuel pressure is 65# ***** and will run until the throttle runs dry. I had a running veh… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
1992 GMC ASTRO VAN, VEHICLE'S ENGINE STOPS AND WON'T RESTART
1992 GMC ASTRO VAN, VEHICLE'S ENGINE STOPS AND WON'T RESTART FOR AT LEAST TWO HOURS, I CHECKED SPARK AND FUEL PRESSURE (BOTH ARE WITHIN CORRECT RANGE) WHAT ELSE CAN I CHECK FOR?… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
gmc envoy: 2006 GMC Envoy XL no crank, no start. Battery and
2006 GMC Envoy XL no crank, no start. Battery and cables all good.Fuel light is on empty, even though there is fuel. Stabilitrack light reading Stabilitrack off. PRND not lit up on dash.… read more
sprinkles08
sprinkles08
Technician
High School or GED
18,784 satisfied customers
I have a 98 GMC Safari 4.3l. the engine cranks and the spark
I have a 98 GMC Safari 4.3l . the engine cranks and the spark is good. after 10 secs. of cranking, it will fire up, relatively smoothly but for only a couple secs, then it dies. I've done all the fuel… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
32,742 satisfied customers
2001 gmc savana box truck wont start after runjign out of gasolinen
2001 gmc savana box truck wont start after runjign out of gasolinen no voltafe going to fuel pump from ?… read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
20,671 satisfied customers
I HAVE A 98 GMC SAFARI WITH THE 4.3 VORTEC IN IT, I JUMP
I HAVE A 98 GMC SAFARI WITH THE 4.3 VORTEC IN IT, I JUMP STARTED A CAR FOR A STRANDED WOMAN, DROVE MY VAN FOR FORTY MILES STOPPING SEVERAL TIMES. GOT HOME TURNED OFF ENGINE. IT HASNT STARTED SINCE. I … read more
Doug
Doug
Head technician
High School or GED
394 satisfied customers
GMC Sierra 1500: Hello I have a 2002 GMC Sierra 5.3L, The problem
Hello I have a 2002 GMC Sierra 5.3L, The problem is no start, no fuel pressure, relay good, fuses good, 4.5 to 5 v at the pump, checked harness; good, ???… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GM gmc: I have a 2006 gmc 6.6L duramax that has a code and
I have a 2006 gmc 6.6L duramax that has a code and i can't get the code reader to comunicate to the vehicle code reader powers up though. also it seems like it is in tow haul all the time.… read more
John
John
MASTER AUTOMOTIVE TECHNICIAN
2 YEARS COLLEGE
9,106 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