GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Related GMC Questions
spongy brakes have bled repeatedly to no avail.only able to
spongy brakes have bled repeatedly to no avail.only able to get half pedal that is soft.New pads and calipers on front and new shoes on rear also new master cylinder..… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
2000 c3500 disc front drum rear. Had weak brake pedal. Replaced
2000 c3500 disc front drum rear. Had weak brake pedal. Replaced both front calipers and pads. Rear brakes are good and adjusted. New master cylinder. System is properly bled. Have decent brakes with e… read more
Eric
Eric
Retired
N/A
33,589 satisfied customers
GMC: 2000 jimmy. I replaced the brak line from the abs to the
2000 jimmy. I replaced the brak line from the abs to the rear. when I have the pedal pumped and held down, we crack the tube nut at the rear end of the line and nothing comes out, not even air. so, I … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC 2500 4wd Sierra: I have a /brake problem that I need help
I have a /brake problem that I need help with ASAP. I have rebuilt my brake system and still do not have any brakes. The vehicle is a 1995 GMC 2500 4WD Sierra pickup. At this point I have put news bra… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC 2500 Sierra: I rebuilt the brake system on my 1995 GMC
I rebuilt the brake system on my 1995 GMC Sierra 2500 pickup. New shoes and pads, new rotors, calipers, rear wheel cylinders, and master cylinder. Bench bled the master cylinder and bled all four whee… read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
19,495 satisfied customers
GMC Suburban K25/K2500 4x4: Hello I have a 1996 GMC suburban
Hello I have a 1996 GMC suburban 2500 4x4 8600 GVWR (vin 3GKGK26J2TG521066 ) I have been chasing a low brake pedal. I have replaced both rear wheel cylinders, drums, shoes, master cylinder. I am conce… read more
ASEMaster35yrs
ASEMaster35yrs
Vocational, Technical or Trade Scho
2,061 satisfied customers
GMC Sierra 1500 Classic SLE: ive replaced the lines,master
ive replaced the lines,master cylinder,brake booster,abs module,wheel cylinders put new brakes all the way around and vacuum bled it and all the brakes draw but no pedal. has hard brakes when not star… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
675 satisfied customers
GMC Suburban K15/K1500 4x4: spongy brakes, k1500, suburban,
spongy brakes, k1500, suburban, 5.7L, reman MC, new calipers, new brake cylinders, used ABS Modulator valve, three new brake lines to ABS proportioning valve, bled brakes with liters through each whee… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,080 satisfied customers
GM Sierra: I have a 1997 GMC Sierra K1500 4WD. I have a problem
I have a 1997 GMC Sierra K1500 4WD. I have a problem with the brakes. If I lightly pump the brake pedal, the truck comes to a stop, however if I firmly press the pedal to stop abruptly the brake pedal… read more
Pete
Pete
GMC Mechanic
34,254 satisfied customers
GMC Yukon: What is the sequence for bleeding the brakes on
What is the sequence for bleeding the brakes on a 2007 GMC Yukon? I have bleed them and I still have the pedal going to the floor. If I pump the brake I have pressure but then the 1st time I hit the p… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Sierra 1500: we have a 99 gmc truck 1500 series,brakes
we have a 99 gmc truck 1500 series,brakes are sponggie still after replacing brake booster,no leaks,fluid full,bleed abs,whats wrong… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,022 satisfied customers
GMC Sierra 1500: 1999 GMC/SIERRA K1500/5.3L V8 MPI OHV I just
1999 GMC/SIERRA K1500/5.3L V8 MPI OHV I just replaced all the brake lines going from ABS block to front.My problem is I bled whole system but no pedal.How can I get pedal again?… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
I have a 1999 GMC K1500 Suburban. I have replaced all brake
I have a 1999 GMC K1500 Suburban. I have replaced all brake pads, rtors, shoes and drums and bled the fluid system twice. The parking brake/warning light stays on and won't go off. During normal braki… read more
ASEMaster35yrs
ASEMaster35yrs
Vocational, Technical or Trade Scho
2,061 satisfied customers
GMC Yukon: very soft brake paddle sometimes i have to pump
very soft brake paddle sometimes i have to pump the brakes to get full peddle I see no leaks at all… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC 3500: I have a 2008 GMC 3500 dully with no back wheel brakes.
I have a 2008 GMC 3500 dully with no back wheel brakes. There is pressure from the master cylinder. I have bled each of the rear wheels with a good stream of fluid comming from each. I have been drivi… read more
tripletauto
tripletauto
Shop Foreman
Associate Degree
238 satisfied customers
GMC/Chevy Silverado: 02 Silverado, xtracab, 5.3 gas, 235k.
02 Silverado, xtracab, 5.3 gas, 235k. Brake Problem: New pads, rotors & calipers w/ bleed- Truck will stop, but not quickly. Pumping the brakes has no effect. I can push pedal to floor without too muc… read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
19,495 satisfied customers
gmc Jimmy S15/T15: 98 gmc jimmy 4WD, third new master cylinder
98 gmc jimmy 4WD, third new master cylinder in attempt to solve problem. Also replaced, all rubber hoses and rear calipers. No visible leaks. Have bled system multiple times. get a good solid pedal, b… read more
Eric
Eric
Retired
N/A
33,589 satisfied customers
i just changed my hydroboost on a 2003 hd 2500 6.6 duramax.i
i just changed my hydroboost on a 2003 hd 2500 6.6 duramax.i bled the power steering out the return line by turning wheels from stop to stop about 6 times ,hooked the return back up ,did not start tru… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 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

1,823 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