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My idle is running at 2000 rpm. 280,000 miles and its a 6.0.
Yes, I got the following code: P0121, P2101, P1516. I have replaced the Throttle pedal position sensor, and put a new Delco throttle body on it . … read more
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retired
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I'm having engine surging problems too. ~160k, Automatic.
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2005 gmc yukon AWD 5.3l has 2 codes PO 0220 and PO2135 which
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I have a 2004 gmc envoy with a 4200. I changed the oil and
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How are you i have 3 codes coming up plus an evap leak the
hi how are you i have 3 codes coming up plus an evap leak the codes are p0224 and u1026 and c0045 … read more
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When scanned my vehicle pulls po121 TPS code. I replaced the
When scanned my vehicle pulls po121 TPS code. I replaced the TPS and the code has returned even though the vehicle is running much smoother. I need to rid myself of this code so I can be inspected.… read more
Gm Tech (Cam)
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GMC Yukon XL 1500 Denali: My 2007 GMC Yukon XL Denali has
My 2007 GMC Yukon XL Denali (127,000 mi) has been revving while driving occasionally. Yesterday it did it again and then went into Limp mode (20 mph or less) and i got the following engine codes: P070… read more
Gm Tech (Cam)
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Gary
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GMC Yukon Denali 2003: Reduced engine power message + engine codes My wife gets in the vehicle, starts the engine and occasionally receives "stability system disabled" and then "reduced engine power".… read more
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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
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GMC Yukon XL K2500QS: Hi there, anybody around who knows
Hi there, anybody around who knows how to nip p1516 & u1000 in the bud? Vehicle: 2003 GMC Yukon XL K2500QS 6.0 Codes set intermittently but somewhat predictable. It will set most mornings within a few… read more
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GMC Yukon Denali: Car - 2004 yukon denali awd 6.0 with 125,000
Car - 2004 yukon denali awd 6.0 with 125,000 mi. Im the original owner and have performed all required service intervals since day one, and always use synthetic. Appox 700 mi prior to problem I had ca… read more
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,912 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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