GMC

GMC Troubleshooting Questions? Ask a Mechanic for Answers

Ask an Expert,
Get an Answer ASAP!

GMC

06 GMC Sierra 2500 HD Duramax. Rear ABS coming on just as

Customer Question
06 GMC Sierra 2500 HD...
06 GMC Sierra 2500 HD Duramax. Rear ABS coming on just as vehicle is rolling to a stop. Harsh 2-1 downshift occurs at same time. No lights on dash. ????
Submitted: 5 months ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 42 minutes by:
6/8/2017
GMC Mechanic: Anthony Uzmack,
 replied 5 months ago
Anthony Uzmack
Category: GMC
Satisfied Customers: 40
Experience: Service Technician at Tom Henry Chevrolet
Verified

Hello, Let me see if I can shed some light on whats going on.

Does the ABS kick in with in the last couple mph before the stop? There is a big issue with GM trucks and the front wheel speed sensors getting rust under them causing incorrect wheel speed sensor readings causing low speed ABS activation coming to a stop. Since the ABS is activating the 2-1 shift will feel a little more harsh than usual. This also will not present a fault code or light.

To correct this condition you can try removing the front brakes, then removing the wheel speed sensors in the front hubs and cleaning the sensor mount on the hub with wire brush or sand paper. Make sure to wipe the sensor down as well.

Hopefully this information helps you solve the problem.

IF you find this answer acceptable please click accept answer and give me a positive rating so that I can be credited for this question. Thank you very much.

Ask Your Own GMC Question
GMC Mechanic: Anthony Uzmack,
 replied 5 months ago

any update on this condition?

Ask Your Own GMC Question
Ask Anthony Uzmack Your Own Question
Anthony Uzmack
Anthony Uzmack
Anthony Uzmack
Category: GMC
Satisfied Customers: 40
40 Satisfied Customers
Experience: Service Technician at Tom Henry Chevrolet

Anthony Uzmack is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

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

1,696 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,542 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

563 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

255 satisfied customers

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

George H.

George H.

ASE MasterTechnician

225 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

216 satisfied customers

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

< Previous | Next >

Related GMC Questions
I got a 2003 Kodiak 4500 and the abs light is on and the ip
I got a 2003 Kodiak 4500 and the abs light is on and the ip brake light is on. I hook up my scan tool but I cant communicate with abs.… read more
roy
roy
Associate Degree
3 satisfied customers
2008 GMC Sierra 2500 HD. Over heats occasionally and
2008 GMC Sierra 2500 HD. Over heats occasionally and intermittently.first time it happened I was pulling a camper the heat guage went to 125c . I slowed down the truck shifted down and the guage dropp… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,542 satisfied customers
Stabilitrak service light and abs light both on, service
nothing so far- just started looking- it has only come on one time before and stopped- this time didn't want to go into gear but then did and is working fine- lights still on though … read more
Gunvir Singh
Gunvir Singh
1,702 satisfied customers
2011 GMC Sierra 2500 HD transmission intermittently sticks
2011 GMC Sierra 2500 HD transmission intermittently sticks in third gear. Line that tells what gear your in disappears. Shifts hard in reverse an drive when this happens.… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,542 satisfied customers
2007 GMC Sierra 2500 HD classic 6.6L duramax diesel. At
2007 GMC Sierra 2500 HD classic 6.6L duramax diesel. At 58,500 miles threw code P0403 my mechanic did PCM software update per TSB 06-06-04-066D. Was ok for a while then threw same code at 60,500 miles… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 2005 GMC Sierra 2500 HD Crew Cab 6.0 L 65,000 miles
I have a 2005 GMC Sierra 2500 HD Crew Cab 6.0 L 65,000 miles The problem is the rear windows will not power down i have 13.5 volts across the red and black wires on both rear switches and i have power… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
563 satisfied customers
The abs and ted brake light is on. Both. 2005 yukon. Ive
The abs and ted brake light is on JA: Is it just the ABS light? Or is the brake system warning light on, too? Customer: Both JA: What is the model/year of your GMC? Customer: 2005 yukon JA: Are you fi… read more
roy
roy
Associate Degree
3 satisfied customers
04 Sierra 2500 6.0 4X4 It falls into reduced power, Cleaned
04 Sierra 2500 6.0 4X4 It falls into reduced power, Cleaned throttle body, No help. Scanned and found code P1516 and P1516A. What do we need to do?… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Stopped hard in the rain. The abs and brake light came one.
Stopped hard in the rain. The abs and brake light came one. And the tran was stuck in one gear. … read more
Todd M
Todd M
Owner
ASE Certification
1,286 satisfied customers
I have a 2015 GMC Sierra 2500 HD Denali, My truck suffered
Hi Experts , I have a 2015 GMC Sierra 2500 HD Denali , My truck suffered damaged in the engine under covers , I'm not fully aware of wich part to order to make a replacement , also I'm in a country wh… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
563 satisfied customers
Wont start!! it cranks, 2002 gmc sierra 2500 hd new injector
I put a fass 150 lift pump. rebuilt the filter head. new fuel filter new injectors and new cp3 Cranks at 180 rpm and I only get 1.2kpsi rail pressure … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
563 satisfied customers
I have a 2013 GMC Sierra 2500 HD with auto climate controls.
Hi. I have a 2013 GMC Sierra 2500 HD with auto climate controls. In the last year or so, my outside temperature reading that appears in the main instrument cluster randomly begins to read below the ac… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I have an '02 GMC Sierra 2500 HD 4WD with the Allison
I have an '02 GMC Sierra 2500 HD 4WD with the Allison Transmission and the 8.1 Engine. Recently it started "slipping" out of reverse and drive at slow speeds and the R or D would flash. I would put it… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
563 satisfied customers
Brake & abs lights coming on, just put new rotors & pads on
brake & abs lights coming on, just put new rotors & pads on rear , fronts are fine.. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 2016 Sierra 2500, 6.6 lml with 7500 miles on it.
I have a 2016 Sierra 2500, 6.6 lml with 7500 miles on it. LOVE the truck, but the other day I got in it and fired it up and headed down the street to work. It cranked up fine and then about 1/2 mile l… read more
Expert
Expert
13 satisfied customers
No crank, no start. 2007 GMC Sierra 2500 HD Classic. I
yes, I changed the ignition switch and the nuetral safety switch … read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
06 sierra 2500 with no lobeams no power to either side of lo
Hi Dave- 06 sierra 2500 with no lobeams no power to either side of lo hdlp -lt and lo hdlp -rt. relay clicks from lo to hi and I've changed out relays. Any ideas? Thanks!… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
I have a 2002 GMC Sierra 2500 HD when I hit the brakes my
I have a 2002 GMC Sierra 2500 HD when I hit the brakes my left turn front and back blinker comes on … read more
tim37857
tim37857
Mechanic
High School or GED
71 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.

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