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Problem after TCM replaced. 2008 GMC Acadia. I have it at at
I have it at at garage. The TCM failed while traveling and was told I had to replace the upper valve assembly and the TCM. Installed TCM but only park and drive work. … read more
Roy
Roy
shop foreman
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My 2010 GMC is pulling the codes P0872, P0877, and P0989.
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Gm Tech (Cam)
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the brake system warning light flashes once in a while … read more
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hello. I'm Mark in Texas. just looking for possible solutions to why my 2003 GMC Sierra Denali has started having reduced engine power mode fails over the last year. bought it new and only happened a … read more
Gary
Gary
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P0700. 2008 Gmc Yukon Denali XL 6.2. And nothing it says TCM
P0700 JA: What is the model/year of your GM? Customer: 2008 Gmc Yukon Denali XL 6.2 JA: Are you fixing your Yukon Denali yourself? What have you tried so far? Customer: Yes and nothing it says TCM JA:… read more
Dan
Dan
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I have coode p0877-00 / p0989-00 and p07521-2, this is 3
I tried to reset but it comes again after one hour … read more
GM Bob
GM Bob
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I have a 2007 acadia with codes P0752,P0877and P0 989.
I have a 2007 acadia with codes P0752,P0877and P0 989. Sounds like a shift problem … read more
Chad Farhat
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P0877 P0872 P0842, 2008 GMC Yukon Denali, troubleshooting
Had O2 sensor issue and replaced CAT system with all four O2 sensors had multiple O2 changes after initial replacement, then new transmission pressure sensor issues immediately thereafter … read more
GM Bob
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I have a check engine light that comes and go off, making it
I have a check engine light that comes and go off , making it not shift properly unless I go to neutral then back to Drive till I can feel that I'm on the 6th gear, then it'll stay on and truck will s… read more
Pete
Pete
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I have a '08 Acadia 3.6L engine automatic transmission 2WD I
I have a '08 Acadia 3.6L engine automatic transmission 2WD I got this 3 codes from TCM P0872 P0877 P0989 according to my research I have to replace the TCM can you guys help me out to know if I have a… read more
Ryan Schott
Ryan Schott
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How do you check the valve body stuck valve and when you say
How do you check the valve body for a stuck valve and when you say replace cracked rear cover, do you mean the adapter housing?… read more
GM Bob
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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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I have an 2008 Gmc sierra denaliother day engine lite came
I have an 2008 Gmc sierra denaliother day engine lite came on code is then yesterday stabilitytrak sevice, engine reduce power. dont know eacatly what it is… read more
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GMC Sierra: i have 2008 sierra 2500 HD with the 6.6 Duramax.
i have 2008 sierra 2500 HD with the 6.6 Duramax. about a week ago my cruise control would engage and operate when it wanted too, then monday afternoon i was driving across town and i got a CEL and the… read more
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GMC: I have a 2007 New Body Sierra Duramax with P0762 shift
I have a 2007 New Body Sierra Duramax with P0762 shift solenoid 3 valve stuck on would like to know how to trouble shoot this.… read more
Jerry
Jerry
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GMC Acadia SLT: I have a 2008 Acadia. Wife was driving it
I have a 2008 Acadia. Wife was driving it to Canton (2 hours from home) and noted the RPM's jumped to 7000 while driving on the express way at 70 mph. She quickly put it in neutral and pulled over. Sh… read more
shawnrbaldwin
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Problems With GMC Acadia 2007 SLT AWD Transmission.Codes
Problems With GMC Acadia 2007 SLT AWD Transmission. Codes - P0752 - SOL A Stuck P0877 - TFP Switch Stuck CKT 4 P0989 - TFP Switch CKT 5 U0140 - Lost Comm Body Control Module Vehicle currently in shop … read more
tripletauto
tripletauto
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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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Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,832 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)

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54,710 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

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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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