GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Related GMC Questions
I have a pesky P0300 code on my Truck and its not going
I have a pesky P0300 code on my Truck and its not going away. I originally had P0301 and P0306 so I replaced the appropriate coils on Cylinder 1 and 6. I have replaces the spark plugs and the cables. … read more
roy
roy
Associate Degree
3 satisfied customers
Have to press on the gas pedal somtimes for it to start, no
have to press on the gas pedal somtimes for it to start, no engine light either, gave it a tune up, new plugs and wires, cleaned throttle body and fuel pressure is at 55-60psi, check coils, they are g… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
2008 GMC Acadia SLT 3.6 140K miles Problem is i keep getting
2008 GMC Acadia SLT 3.6 140K miles Problem is i keep getting P0171 and P0174 lean codes. I live in IN and it has been cold. CEL day it was 12 deg. It also had a throttle body code. so i removed air in… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
GMC Savana 1500: , I replaced the evap valve but it keeps
Hi, I replaced the evap valve but it keeps sending the PO446 code. 2002 GMC savanna 1500 with 5.7… read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
279 satisfied customers
GMC Sierra: I have a 2002 GMC Sierra. It had a 4.3L V6 and
I have a 2002 GMC Sierra. It had a 4.3L V6 and I installed an 04 5.3 in it. I am currently having remarketablly... only 2 issues LOL. The first one is check engine code(s). I believe they are related … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
GMC Sierra: 2000 GMC Sierra SLE 5.3L V8. The MIL light is not
2000 GMC Sierra SLE 5.3L V8. The MIL light is not on. I have a hard time turning the truck on. I changed the fuel pump, fuel filter, TPS, Idle Control Sensor, new battery, new iridium spark plugs, i c… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
gmc yukon: i have a 2002 gmc yukon 5.3L 97,000 miles FLEX FUEL
i have a 2002 gmc yukon 5.3L 97,000 miles FLEX FUEL throwing p0171 and p0174 code is it a 02 sensor or the maf sensor or the intake manifold gaskit which is more likely… read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
279 satisfied customers
GMC Savana 3500 LT: i have a 2003 gmc savanna 3500 with a 6.0l
i have a 2003 gmc savanna 3500 with a 6.0l the truck runs ok it has a ltft of 25 both banks and when you step on throttle pedal it revs fine but when you step on brakes it kills fuel all fule pressure… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
GMC SAVANNA: HAVE A GMC SAVANNA 6.0 LITER, CEL LIGHT ON ,RANDOM
HAVE A GMC SAVANNA 6.0 LITER, CEL LIGHT ON ,RANDOM MISFIRE CODES ONLY,WHEN YOU STEP ON GAS BOGS DOWN AND HARD TO GET OVER 30 MPH,ANY KNOWN CAUSES ON THIS MOTOR, ITS A 2006… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC jimmy: I am working on a 96 gmc jimmy runs ok at idle but
I am working on a 96 gmc jimmy runs ok at idle but when put in gear and try to go down the road it jerks and will not accelerate and sets random misfire code if maf is unplugged it will run better but… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
GMC Yukon Denali 4x4: I have a 2001 GMC Yukon Denali 6.0 AWD.
I have a 2001 GMC Yukon Denali 6.0 AWD. I believe it is the LQ4 GenIII engine. I have a couple of issues with it. One is ongoing with a slightly rough idle or on a cold srt up. Somethings that I have … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
i have a 1999 GMC savana 3500 5.7 came to us because it over
i have a 1999 GMC savana 3500 5.7 came to us because it over heated, found out it had a blown head gasket, pulled engine out replaced gasket and both heads (had cracks) put every thing together also r… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC C1500 Sierra 4x2: Hello I have a GMC C1500 1998 5.7 2 wd
Hello I have a GMC C1500 1998 5.7 2 wd I just replace the Cat Converter Plugs and wires and Dist cap and rotar, and Coil I am getting muti miss fire readings. I just started Saturday when I punched it… read more
proautotech
proautotech
Shop Foreman
1,144 satisfied customers
GMC 1500 Series: Im working on a 2000 1500 5.3. Motor idles
Im working on a 2000 1500 5.3. Motor idles but just falls on its face if i try to accelerate. If i slowly aply fuel it will run smooth and i can get it to about 50 mph. I changed all o2 sensors bcuz t… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC K1500 4x4:Getting codes P0131 P0137 P0151 P0157
1996 GMC 5.7 automatic 4x4. Getting codes P0131 P0137 P0151 P0157 & sometimes codes P0171 P0174. Runs fine when first started for 10-15 miles then runs rough & loses power,let it set for little while … read more
Reecekerley
Reecekerley
Business Owner
Vocational, Technical or Trade Scho
52 satisfied customers
GMC Savana 3500 LT: Hi I have a 2000 GMC savanna 3500 with
Hi I have a 2000 GMC savanna 3500 with a 5.7 vortec it has the spider injection. i installed a new fuel pump about 30k ago hoping to cure a problem my van was having witch seemed to be not getting fue… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
2001 gmc savanna replaced fuel pump, checked fuses, replaced
2001 gmc savanna replaced fuel pump, checked fuses, replaced fuel filter, but still wont start unless spraying in starter spray directly. it dies when that stops. also fuel guage is sporadic during th… read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
848 satisfied customers
GM 3500: 1996 gmc 3500 350ci. truck wont start. No codes stored,
1996 gmc 3500 350ci. truck won't start. No codes stored, checked spark and its strong. Checked fuel and theres flow and pressure, 68psi when pump is running then it drops right to 55psi when the pump … read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 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

1,796 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,588 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

626 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

279 satisfied customers

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

JFN1

JFN1

ASE Certified Technician

270 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

228 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