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Related GMC Questions
Just filled up the DEF but it's not resetting. 2015 3500 LTZ
just happened today. Got in the truck this morning and it said 60 miles under low speed, refill DEF. Normally it gives a good heads up, and I know it isn't empty. I put a jug of DEF in anyways, about 1.5 gallons, and it didn't make a difference. So I assume the level indicator is stuck? Not sending a signal? … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,200 satisfied customers
2011 6.6 has code 2463 as well as 2454 / im performong a
2011 6.6 has code 2463 as well as 2454 / im performong a passive regen now im about 40 min. into it the engine light is on temps are over 1000 degrees any thoughts on issue will the regen do it or am … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
31,025 satisfied customers
I have a 2001 Yukon with manual HVAC. The mode actuator
I have a 2001 Yukon with manual HVAC. The mode actuator started "hunting" and making noise like water boiling in the next room. Help … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
1,610 satisfied customers
Cam, 2005 gmc 2500 6.6 has code p1093 fuel rail pressure low
hello cam, 2005 gmc 2500 6.6 has code p1093 fuel rail pressure low when enrichment requested. symtoms are loss of power engine will not go above 2k rpm any thoughts?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
31,025 satisfied customers
I have a 2015 Gmc duramax washed the filter cleared the
Hi i have a 2015 Gmc duramax washed the filter cleared the codes less than a minute of driving check engine light comes on and truck goes right down to half power code P2463 comes up first and then af… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
766 satisfied customers
3500 2001. Its a tad complicated...you or him? 2001 gmc
its a tad complicated...you or him? 2001 gmc sierra 3500 dually RWD ... power loss...Guys - '01 3500 Sierra Dually RWD 6.6L Duramax, w/ Allison. Cruising flat highways and on ramp speed up are no issues. However, up hill (whether towing or not) and kicking down the tranny to lower gear the following happens: dash lights, radio, seemingly the ignition circuit and a loss of power occurs after about 10-20 seconds after starting the hill. Only solution is to remove foot off accelerator and everything comes back on and carries on. To take the hill I must stay around 50 MPH, to avoid tranny shifting? This is a ground issue, isnt it? Is it possible that the tranny and the dash (and/or ignition circuit) are all grounded to the same hard point, that is faulty, perhaps?!? any idea what may be causing this kind of power loss? and gas pedal or tranny/ dash shutdown combination?… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
7,362 satisfied customers
2011 GMC 3500HD 6.6 LML DURAMAX (Stock, no mods). Code P0420
2011 GMC 3500HD 6.6 LML DURAMAX (Stock, no mods).Code P0420 - Catalyst System Efficiency below Threshold Bank 1. Code P2463 - Particulate Filter restriction - soot accumulation. Upon starting DIC Msg … read more
Eric
Eric
Retired
N/A
37,379 satisfied customers
I have an 02 GMC Sierra 1500 5.3L V8 with a check engine
I have an 02 GMC Sierra 1500 5.3L V8 with a check engine light. I have Codes: PO449-PO420-PO440. I have replaced the Vapor Canister Purge Valve Solenoid and the Vapor Canister. What else can I do to t… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
7,362 satisfied customers
I have a 2011 gmc savana with LGH duramax. The follow
I have a 2011 gmc savana with LGH duramax. The follow message appear in cluster : clean DPF, run until message clear. I look in ecm data and it have 60 g. of soot. I try to enable regeneration with sc… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,200 satisfied customers
2002 GMC 3500 HD turbo diesel no power codes p1216 and pro
2002 GMC 3500 HD turbo diesel no power codes p1216 and pro 251 it has had a fuel mod put on about a yr ago its mounted on the fender any help would be great… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,200 satisfied customers
GMC 2015 Duramax LML V8 6.6L - DIC message SERVICE EXHAUST
GMC 2015 Duramax LML V8 6.6L - DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW -TRANSITIONING TO 7 KM/H(4 MPH) MAX SPEED displays. A flashing warning light and a chime also come on. V… read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
1,610 satisfied customers
gmc sierra: 2002 durmax 6.6 chevy replace fuel pump still wont
2002 durmax 6.6 chevy replace fuel pump still wont crank. first changed fuel filter and started drove 10 miles died wont crank still… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
31,025 satisfied customers
GM k3500 obs: , I have a problem with my blend door actuator.
, I have a problem with my blend door actuator. I replaced the heat and a/c control unit and the controls all worked yesterday. today i was driving down the road. and the heater defaulted to only blow… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
GMC C3500 HD: 2000 GMC 3500 6.5 diesel no upshift into overdrive
2000 GMC 3500 6.5 diesel no upshift into overdrive after automatic downshift. If you shift the transmission manually into third then back into 4th it will go into 4th. If you turn off the engine and s… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon XL 1500 Denali: I have a 03 yukon denali runs bad
I have a 03 yukon denali runs bad when check engine light comes on the code that i get is p1516 electronic throttle mod vs throttle position performance and the reduce power light comes on on dash… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
GMC Sierra 2500HD Diesel: Ok need some help ordering the correct
Ok need some help ordering the correct part. I had a squirrel eat the wire to the top plug. I spliced the wires back to gether but I'm getting error codes. Given the fact that there are 4 different OR… read more
Mike S.
Mike S.
ASE Certified Technician
Vocational, Technical or Trade Scho
241 satisfied customers
GMC 2500 Series: 2004 GMC 2500HD w/duramax replaced batteries
2004 GMC 2500HD w/duramax replaced batteries yesterday, now the drivers side vents only blow hot air. This truck has dual temp controls. Do you have any ideas?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
31,025 satisfied customers
GMC Yukon slt: 2007 gmc Yukon slt and my rear gate door will
2007 gmc Yukon slt and my rear gate door will not open with remote or by handle, only manually I can open but not powered. My front power gate switch is on and when I press remote button to open my ta… read more
John
John
MASTER AUTOMOTIVE TECHNICIAN
2 YEARS COLLEGE
9,106 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

31,025 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

766 satisfied customers

16 years of experience

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

248 satisfied customers

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

Mike S.

Mike S.

ASE Certified Technician

241 satisfied customers

GMC N.A.I.S.E. Certified Auto-Mechanic

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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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