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Does not accelerate when cold. Once warm, it runs fine. This
Does not accelerate when cold. Once warm, it runs fine. This is for a 2001 GMC Yukon XL 2500. Could it be a bad fuel injector? There are no stored DTC codes. I have: -Changed fuel filter -Changed spar… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,867 satisfied customers
The back up camera is not working. It came on the vehicle.
I have not tried to fix it. It came back on then was off next time I drove the car. … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,922 satisfied customers
Our 2001 Yukon Denali 6.0L (purchased new) now has 178,000
Our 2001 Yukon Denali 6.0L (purchased new) now has 178,000 miles and has been the best vehicle I've ever owned. We no longer use the vehicle on a daily basis – hanging on to it primarily for pulling a… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
10,841 satisfied customers
I got a 2002 gmc yukon xl 1500 5.3. Drives good, but throws
I got a 2002 gmc yukon xl 1500 5.3. Drives good, but throws a misfire code when coasting down a long hill after its been driving for a while. No issues with performance, and it clears after a while … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
19,501 satisfied customers
I have a 2005 GMC Sierra truck. I went to get a smog check.
Hi. I have a 2005 GMC Sierra truck. I went to get a smog check. And have engine light on p0174. P0174. P0455. Can you give me a rough estimate of what these problems will cost. I'm taking to a shop th… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,867 satisfied customers
I just bought a GMC ENVOY XL for my mom, she is getting
I just bought a GMC ENVOY XL for my mom, she is getting older should I wanted something full frame but small for her. Anyways I got a great deal on the car but it needs work, it's got 182k it's runnin… read more
Reggie Whiddon
Reggie Whiddon
Shop Foreman
Vocational, Technical or Trade School
157 satisfied customers
05 Yukon, starts right up and shuts off immediately. Tried
05 Yukon, starts right up and shuts off immediately. Tried the 10min procedure but my security light on the dash never shuts off. tried several times.… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,867 satisfied customers
I have a 2005 GMC Sierra 6.0 that we got from the auction.
I have a 2005 GMC Sierra 6.0 that we got from the auction. It had a check engine light for bad mass air sensor, replaced it and later got a code P0430 for catalytic converter, could this be something … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,867 satisfied customers
I'm looking at a board you answered 2 yrs ago in which you
I'm looking at a board you answered 2 yrs ago in which you said "The most likely cause is a bad ignition lock cylinder"...just had this replaced (ignition switch and lock cylinder) after having tried … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
GMC Yukon xl Denli: I have a2004 GMC Denali Yukon xl 6L engine
I have a2004 GMC Denali Yukon xl 6L engine 125000 miles. Fuel pump replaced last fall, sparkplugs and wires replaced two weeks ago for first time. Engine had and still runs rough at higher RPM and che… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
GMC: I'm drawing/leaking 4.7 amps at my radio pigtail. I have
I'm drawing/leaking 4.7 amps at my radio pigtail. I have a 99 GMC Suburban LST. There is no draw at the fuse terminal but only with the fuse in. Any ideas?… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,024 satisfied customers
GMC Yukon 4x4: I have a 98 Yukon 4wd... It throws a p0300
I have a '98 Yukon 4wd... It throws a p0300 at speed between 2200 RPM and 3000 rpm or so. You can feel it 'chug' or 'surge'. Car has 112k miles. Mechanics have replaced the fuel spider/injectors with … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon SLE: 2001 GMC Yukon SLE service light on. Actions
2001 GMC Yukon SLE service light on. Actions taken after visiting Auto Zone 1. Change all four O2 sensors, MAF (2x), Fuel Pressure regular (only reading 30 before changing, now only 40 with new one), … read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
285 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
1,823 satisfied customers
GMC GMC Suburban - K1500: Cam,About my 1997 GMC K1500 Suburban,
Cam, About my 1997 GMC K1500 Suburban, 7.5L 4WD... You helped me fix the misfire issue about 9 months ago. Recently it progressively became more difficult to start until finally it would not start at … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
GMC Yukon XL Denali: I have a 2007 GMC Denali and the service
I have a 2007 GMC Denali and the service traction, stability and engine light all came on at the same time right before my doors began to start locking and unlocking when I started my truck. Needless … read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
925 satisfied customers
Why would the paint on my 2006 GMC YUKON XL being wearing
Why would the paint on my 2006 GMC YUKON XL being wearing down (NOTR FLAKING) in sections, some as long as 3 feet and as wide as 4" down the roof line. It looks like someone took a sandblaster and ble… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,024 satisfied customers
GM Yukon Denali: I have an 03 GMC Yukon Denali with close
I have an '03 GMC Yukon Denali with close to 200K trouble-free miles. Much like my '97 GMC Sierra pickup, the Denali seems to have inherited gremlins in the electronics system. I was on the Mass. Turn… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,922 satisfied customers
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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

19,452 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

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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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