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I have a 2004 gmc sierra, i have replaced everything plugs
i have a 2004 gmc sierra, i have replaced everything plugs wires coil packs fuel injectors knock sensors and a new battery. it still wont start, only light i have is the check engine light no other li… read more
Chris Walker
Chris Walker
ASE
73 satisfied customers
We bled the brakes, had full pedal but after several days
We bled the brakes, had full pedal but after several days the pedal will go to the floor and the truck barely stops, We repeated the process and they did the same thing. … read more
Mechanic01
Mechanic01
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GMC Sierra bought from Canada. Can't turn headlights off
GMC Sierra bought from Canada. Can't turn headlights off until transmission in in park. Would like to be able to turn off lights when coming into camp park. How do I change this to work like USA truck… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
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I plugged in a trailer with electric brakes to a 2016 GMC
I plugged in a trailer with electric brakes to a 2016 GMC Sierra 1500. 7 flat connecters, only 6 are wired, nothing to the center pin. When first hooked up, error message " check trailer brakes " from… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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The door speakers in my 2008 GMC 1500 Sierra truck have quit
The door speakers in my 2008 GMC 1500 Sierra truck have quit working all together.. This problem started out with the speakers sound quality going in and out. this problem acted like a electrical shor… read more
JFN1
JFN1
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Vocational, Technical or Trade Scho
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I have a 2008 GMC Sierra 1500 and the brake pedal will stick
I have a 2008 GMC Sierra 1500 and the brake pedal will stick to the floor after pressing. I have to use my other foot to pull the pedal back. Put on a new master cylinder, bench bled, bled the lines a… read more
Dan
Dan
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Vocational, Technical or Trade Scho
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I live in Florida. it seems that when the weather gets cold
I live in Florida. it seems that when the weather gets cold down here that the security system in my 2005 GMC Sierra 1500 SLE Will allow me to open the vehicle when I attempt to start it it will run f… read more
BOBBYSS
BOBBYSS
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Associate Degree
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Truck starts normally and then my cluster and column lose
Hello! Truck starts normally and then my cluster and column lose power and the headlights turn off. The engine remains running and other electronics still work like the radio. … read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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Hey man. 01 GMC Sierra My dash lights and brake lights will
Hey man. 01 GMC Sierra My dash lights and brake lights will not illuminate. All functions and brakes work when I push pedal. Checked all fuses no issues. Thoughts? … read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
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I'm getting a very loud grinding/vibration when slowing
I'm getting a very loud grinding/vibration when slowing down, I own a 2008 gmc envoy it sounds like a gear is trying to engage. I first noticed this a couple of days ago when my knee hit the auto sele… read more
Joe  Barfield
Joe Barfield
Retired-Disabled
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GMC Sierra 1500: I have a 2002 gmc Sierra 1500 4.8L 4x4 my
I have a 2002 gmc Sierra 1500 4.8L 4x4 my transmission keeps kicking out of tcc lockup. I had it to tranny shop they say nothing wrong with it. Now it won't even lock up now. The brake pedal switch is… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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GMC Sierra 1500 Classic SLE: I have a 2003 GMC Sierra 1500
I have a 2003 GMC Sierra 1500 Z71. Came home from work and everything was fine. Started it up an hour later to leave and none of the gauges work. I checked all of the fuses and none of them are blown.… read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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GM Sierra Denali Pickup: I have GMC Sierra Denali 03 I believe
I have GMC Sierra Denali 03 I believe it has 5.7L Put new battery,starter.and ignition switch in. Truck will start if engine is cold but when eng. gets hot and I turn it off does not start again. From… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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GMC Sierra 1500 Classic SLT: I have a 2007 GMC Sierra Classic
I have a 2007 GMC Sierra Classic 1500 SLT crew-cab with a 5.3 liter flex-fuel engine with 141,000 miles. Recently the it has started sounding the 'chime' alarm and the temperature gauge zips to around… read more
Pete
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GMC 2500: There is a recall on my 2007 GMC sierra diesel truck
There is a recall on my 2007 GMC sierra diesel truck for Hvac/ac blower. I didn't get the truck into the dealership to have it replaced but now I just started the truck and am smelling a plastic burni… read more
Dave Nova
Dave Nova
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GMC Sierra 2500 HD SLE: I have a 2001 GMC Sierra 2500HD 8.1L
I have a 2001 GMC Sierra 2500HD 8.1L Auto, 4x4. It was purchased just a few weeks back as a spare truck, running. But I have been having electrical issues since day 1. The problem: The alternator ligh… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
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GMC Sierra 1500 Z71: I have a 2007 GMC Sierra Z71 4wd. I have
I have a 2007 GMC Sierra Z71 4wd. I have 84,000 miles with brake pads replaced with ceramic pads at 70,000. Lately when I apply the brakes at 50 - 70 mph the front end vibrates, kinda ounces, rather n… read more
Ron Z.
Ron Z.
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Vocational, Technical or Trade Scho
291 satisfied customers
GMC Sierra 1500: So my 1997 GMC sierra 1500, 5.7 liter 4 wheel
So my 1997 GMC sierra 1500, 5.7 literXXXXXhas been running great without difficulty until yesterday. I was traveling highway miles when i got off at my exit and noticed that it wanted to stall when at… read more
ZZDaryl
ZZDaryl
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,845 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

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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.

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