GMC

GMC troubleshooting questions? Ask a mechanic for answers

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

Related GMC Questions
94 6.5 turbo diesel 299.000. I just got it cheap due to a
Hi...94 6.5 turbo diesel 299.000. I just got it cheap due to a starter flywheel issue. Ttuck ranjust as new. 45 mph the return line from Oil cooler decide to come out of its crimp connector and dlow a… read more
Pete
Pete
GMC Mechanic
General auto certifications
35,176 satisfied customers
2002 GMC 2500 HD, excessive black smoke at idle good power
2002 GMC 2500 HD, excessive black smoke at idle good power though at wot doesn't like to get over 2800 rpm's so shifting is poor. Works well at 3/4 to7/8 throttle. Any ideas? … read more
Jared D
Jared D
Shop Supervisor
Bachelor's
2,387 satisfied customers
I have a 2006 GMC 2500 6.6L diesel truck that is throwing several
I have a 2006 GMC 2500 6.6L diesel truck that is throwing several codes at once. P003A, C0035, P0700, P0102, P0113, P0674, one I cant remember and P0674 again. I have no performance problems with the … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
705 satisfied customers
GM: I have a 97 GMC 3500 HD with 6.5 turbo its week blows black
I have a 97 GMC 3500 HD with 6.5 turbo its week blows black smoke you can hear the turbo spool I can't tell if its enough I'm about to put a vacuum gage on it somewhere to see if its boosting and on t… read more
Pete
Pete
GMC Mechanic
General auto certifications
35,176 satisfied customers
GM suburban: my 6.5 diesel set a P0236 code. I checked vacuum
my 6.5 diesel set a P0236 code. I checked vacuum pump at idle at that is working. Is my next step to replace boost pressure sensor? Thanks for your help Jim… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GM 3500 hd: i have a 93 gmc 3500 hd with 6.5 diesel turbo.the
i have a 93 gmc 3500 hd with 6.5 diesel turbo.the oil pressure changes from 40 ibs to 30 ibs after 10 min.i install a manuel geaugse… read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
925 satisfied customers
GMC Sierra: I have a 99 GMC Sierra with a 6.5 Turbo Diesel.
I have a '99 GMC Sierra with a 6.5 Turbo Diesel. I located the crank positioning sensor. Removed the mounting bolt from the bracket. Got the sensor "most" of the way out, but it won't clear the power … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
705 satisfied customers
GMC C2500: I have a 1996 GMC C2500 with a 6.5 Diesel engine.
I have a 1996 GMC C2500 with a 6.5 Diesel engine. I recently changed the IP, Lift Pump(Delphi), cleaned out all lines, fuel filter canister and fuel tank. I replaced the sending unit with one from Nap… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
705 satisfied customers
GMC 3500 6.5: On a 97 GMC TURBO DIESEL 6.5 Can I remove
On a 97 GMC TURBO DIESEL 6.5 Can I remove turbo and have the van without turbo and plug the turbo oil in and out port How much oil pressure is there in the turbo oil in and out port And can I just plu… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,837 satisfied customers
GM 3500: After changing head gasket, injecor pump and injectors
After changing head gasket, injecor pump and injectors on 93 gmc turbo diesel 3500 6.5 the truck started to work like a brand new truck I added some motor flush and started the truck left it on for 10… read more
Jon
Jon
129 satisfied customers
GMC Z-71: I have a 1998 GMC 6.5 turbo diesel that has a popping
I have a 1998 GMC 6.5 turbo diesel that has a popping noise on the intake valves. It does not "pop" continuously, but frequently. No loss in power nor smoking exhaust.… read more
Dr. Hamman
Dr. Hamman
Vocational, Technical or Trade Scho
6,089 satisfied customers
GMC C2500 Sierra 4x4: I have a 2002 gmc 2500 truck with 180000
I have a 2002 gmc 2500 truck with 180000 Klm's on it. The crankcase filled with diesel fuel and breathed out the excess. I did not get any warning codes. The engine lost power but continued to run. I … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,837 satisfied customers
I just bought a GMC Sierra 2500 HD Duramax truck it has
I just bought a GMC Sierra 2500 HD Duramax truck it has 187,785 thousand miles on it. It runs great just noticed that it idles at 20 for the oil pressure and when I was driving on the highway at about… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,837 satisfied customers
GMC yudon: I have a 1998 GMC Yukon with a 5.7 liter engine
I have a 1998 GMC Yukon with a 5.7 liter engine with 137k miles. About 6 months ago it started using 1 qt of oil every 500 miles only on highway trips. The #5 plug finally fouled over this past weeken… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,837 satisfied customers
gmc sierra sre: i have a 1995 gmc 6.5l high output turbo engine.
i have a 1995 gmc 6.5l high output turbo engine. I want to disconnect the crankcase vent from the turbo and run it into an oil mist seperator. is there a bolt-on available on the market that will work… read more
Dad Mechanic
Dad Mechanic
Vocational, Technical or Trade Scho
199 satisfied customers
GMC chevy silverado 2500 6.5: hi, my gf owns a 93 chevy 2500
hi, my gf owns a 93 chevy 2500 6.5 l turbo diesle, the turbo just stopped working one day gas mileage is going down fast, i checked the blades and all are nice it trns smothly, replaced pcv valve and … read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
925 satisfied customers
GM C5500: I have a C5500 6.6 Duramax that blew off the oil
I have a C5500 6.6 Duramax that blew off the oil cap, and seals in the turbo. The oil pressure is extreme off idle. How do I diagnose the issue?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,837 satisfied customers
92 turbo diesel 6.5 liter truck GMC. Have a lot of pressure
92 turbo diesel 6.5 liter truck GMC. Have a lot of pressure in crank case. Blowing oil out of dip stick. Hose from valve cover to turbo has a lot of smoke and pressure. Has a miss mabye one cylinder. … read more
Robert R
Robert R
Auto Technician
Vocational, Technical or Trade Scho
4,978 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

1,837 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

705 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

291 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

234 satisfied customers

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

< 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