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We hope everything is going well with the repairs. If we can look into anything, please don't hesitate to get in touch with us at socialmedia@gm.com
Sarah, GM Customer Service
Oh has anyone actually tried to communicte with the GM customer service people? I think they are a fake entity they sound concerned but never get back on anything.
When we look into the details of the different situations that the Edmunds community is posting about, we prefer to discuss the details privately as we do need to collect contact information and we handle each different concern on a case by case basis. Not to mention the excellent moderators of this web community would kick us out if we weren't legitimate.
We can be contacted at socialmedia@gm.com if you would like to discuss any vehicle concerns you're having with us!
All the best,
Sarah
GM Customer Service
1- The original problem was caused by a rodent or squirrel chewing on the wiring harness in two different places which, as it turned out, GMC repaired with butt splices
2- The truck ran okay for several months before the problem returned - the cable where it connects to the Throttle Body was replaced a second time by GMC - The Throttle Body was cleaned
3- Several months went by and the problem was occurring on a regular basic - the Throttle Body was replaced but failed again within a few days - GMC wanted to replace the cable AGAIN - I said NO and ordered a replacement cable online and repaired it with good solder joints and shrink tubing - this was a much better job than GMC did on the two previous repairs - I learned MIL Spec soldering years ago and have not lost my touch - But, I am sorry to say the problem did not go away
4- The Throttle Body was cleaned again but the problem remained
5- I remembered the wiring harness was repaired by GMC in TWO places originally so I wiggled the cable at the 2nd repair and REP would come and go as it moved
6- I took the truck to GMC but they wouldn't even look at it until I could get the truck there while the REP was occurring - moving the cable at the dealer would not recreate REP
7- When REP occurred I limped into the dealer - WARNING: Do NOT let the dealer turn the engine off to read the mileage - give them an approximate mileage
8- I showed the dealer where I wiggled the wiring harness again - it still would not cause REP to go away - I went for a test drive in a new GMC while they troubleshot the problem
9- During my test drive the service department called and said they were replacing the cable to the Throttle Body AGAIN because of the computer codes read which INFURIATED me - I told them to not touch it
10- We returned to the service department and smoke must have been coming out of my ears
11- I showed the actual service technician where I had seen the problem - the service manager didn't even tell him about it - while I was standing there he took the wrap off the cable where the original repair had been made and said "There's the problem, it was repaired using butt splices, and should have been soldered according to the service bulletin."
12- He repaired it correctly and it's been working perfectly ever since.
IF YOU HAVE HAD ANY CABLE REPAIR DONE IN THE PAST, HAVE THE DEALERS SERVICE TECH LOOK AT THE REPAIR. IF BUTT SPLICES WERE USED, INSIST THEY BE REPLACED WITH SOLDERED CONNECTIONS. ALSO, TELL HIM THE CODES CANNOT BE TRUSTED. ALL THE CODES POINTED TO THE THROTTLE BODY AND WIRING. MY PROBLEM WAS WITH THE WIRING CABLE WHERE IT WENT THROUGH THE FIREWALL NEAR THE STEERING COLUMN. THIS MAY BE ASSOCIATED WITH THE THROTTLE BODY WIRING BUT WAS NOT WHERE THEY KEPT INSISTING WHERE THE PROBLEM WAS.
We're sorry to hear that the Yukon you recently purchased has been giving you these troubles already! If you were planning on working with a GM dealership and wanted for us to look into this further with you, please send us an email at socialmedia@gm.com with more details, including: your name and Edmunds username, phone and address, the last 8 of your VIN and current mileage, and the name of your involved dealership.
Sarah, GM Customer Service
I have just experienced the exact same problem as message #480. 07 Denali XL 74000 miles. While towing a small load with transmission in tow mode (3 motorcycles, small enclosed single axle trailer) total weight aprox 2800 lbs on the hitch. Arrived at my destination 122 miles, let truck sit with load not attached. Re attached load started with remote key and when I put key in truck and put in gear and flashing on the dash Stabilitrak On, Traction Control and Check Engine Engine at Reduced Power. I let truck idle while in gear for aprox 50 yards. Stopped put in gear turned truck off unweighted hitch disconnected the battery & reconnected the battery twice. Started truck with the key this time and it ran fine for aprox 50 miles then displayed the same syptoms again. Repeated the process & it ran fine again until I shut it off 100 miles later. Lights are on again and this time wont go out.
How much should I expect to pay the worst case scenario? ? ?
Sorry if this isn't the right place. To all who have trouble with reduced engine speed, my 2004 Yukon sat for 14 months, the computer kept saying this was wrong, I fixed everything as it said was wrong, it was all bull crap, everything I fixed kept sending my truck into reduced engine, I almost caused a few scary accidents when I pulled out into traffic. Finally the truck security locked up my truck, wouldn't start, gauges flashing, I put a new throttle body, computer, pedal sensor, the other computer that controls door locks ect, mass air flo, everything electrical, it still went into reduced engine, there was only one thing left to do, I was so pissed off after 14 months, I left the truck running, I grabbed the wire harness to the throttle body ect. The truck died. There were 2 wires melted and the ground wire thinned out, what happened was there was a short in the system and it took out the computer, I didn't have to put all these other parts on but I left them on so I don't have to go through this again. During these 14 months after applying new parts it could run for 5 min to a couple of days before it went into reduced engine speed, it cost me over $4000 to do all this, check your wire harness first so u to don't go through this, and stay away from gmc certified mechanics, I took my vehicle to them and they played guessing games, I took this Yukon to 4 shops, gm mechanics this would of costed me about $8000. Mike Goodes automotive of Ottawa, illinois gave me good prices and will to anybody else, my truck was the first for him to figure out, so basically I was the lab rat, now this should be a cheap easier fix for other people. My Yukon started out to where It would go into reduced engine speed, I could pull over, restart my vehicle and drive normal. As time went on it got worse till finally it wouldn't start due to the security crap, I did everything I could possibly due right, it was tiring and frustrating. Now I been driving out of town far away with no problems, to many people including gm thought they knew what my problem was, gm charged me $900 for nothing
Sorry to hear that your trip was interrupted in this way. Were you planning on visiting your GM dealership for a diagnosis? There will likely be a diagnostic fee involved (which varies from dealership to dealership). Let us know if we can look into this further with you by emailing us at socialmedia@gm.com (include your name, contact information, and the last 8 digits of your VIN).
Sarah, GM Customer Service
My truck is a 2007 Yukon XL, bought it new. Nothing but problems.
Are you planning on working with your dealership to get this looked into? If you are, and if you wanted for us to check into this further, please contact us via email at socialmedia@gm.com (include your name and Edmunds username, phone and address, the last 8 digits of your VIN and mileage, and the name of your dealership).
Sarah, GM Customer Service
Is the dealership you've been working with one of our GM dealerships? If so, we can check into this further with you if you like. Please contact us at socialmedia@gm.com with more details (include your name and Edmunds username, phone and address, the last 8 of your VIN and mileage, and the name of your dealership).
Sarah, GM Customer Service
Wanna start a class action suit?
I had the truck towed to a close dealer for check. They said they will work on it on Monday.
After reading so many bad storied here, I felt mad on GM's attitude towords customers. It seems GM really doesnot care about customers. This is a safety hazard to custoers!
We're sorry to hear that you have had to go back to the dealership a few times for the same concern. If we can look into this further for you, please email us at socialmedia@gm.com (include your name and contact information, a summary of the situation, the last 8 digits of your VIN and mileage, and the name of your dealership).
Sarah, GM Customer Service
Sarah, GM Customer Service
We can certainly understanding wanting to search out input on this loss of power concern on your Yukon as you're out of warranty by mileage. If you had any questions about recall or warranty information, or wanted us to work with you and your dealership toward hopefully resolving this concern, please contact us via email at socialmedia@gm.com (include your name and contact information, a brief recap of the situation, the last 8 digits of your VIN, and the name of your dealership).
In the meantime, I wish you the best in getting to the bottom of the situation as you seek to resolve it yourself.
Sarah, GM Customer Service
While driving the engine stalls and goes into a "Reduced Engine Power" state.
It starts with the indication on the DIC of "Stabiltrak disabled", followed by "Service Stabilitrak" followed by "Service Traction Control" lastly followed by "Reduce Engine Power" and eventually the engine stalls out leaving me with only manual steering and manual braking. Then the Check Engine lights stays on and after shutting down the engine and let it rest (for a couple of hours) the lights shuts off.
It has been happening for the last 6 months, and when it happens in the highway at 65 mph is very dangerous, because it suddenly looses power completely and changing lanes to get to the service road without any power is extremely hard.
I took it to the dealership two times and they couldn't recreate the problem, nor fix it.
As they couldn't fix it and keep happening again, I took the truck to another shop where they found some codes on the computer (U0073, PO641, PO107) They say that relates to the MAP sensor and that it should be covered on the 100.000 miles power-train warranty.
Researching online I found that is a very typical problem with GM, relate to the air intake or the throttle body.
Please GM fix this!
We're sorry that your dealership was unable to recreate the concern you've been having with your Sierra. If you would like for us to check into this further with you and your dealership, please contact us via email at socialmedia@gm.com (include a summary of the situation, name and contact information, the last 8 of your VIN, and the name of your involved dealership).
Sarah, GM Customer Service
I finished my errands and exited the freeway near my home. Imagine my excitement when with my foot on the brake, the car surged forward from a dead stop. I reacted quickly both pushing the brake harder and switching from drive to 'N' neutral. My kids were a bit shaken up and then the real fun began as the car displayed several messages almost simultaneously. "Service stabilitrack" and "Engine power reduced" kept flashing across the display.
I was able to get to the dealership some 2 miles away but never going over 1000 rpms. Scary enough experience to question the car I have so enjoyed to this point. The good news came this morning that while I am about 39500 miles, the repair was covered under warranty. The throttle body motor was replaced.
I talked to two technicians and neither would confirm or deny any similar issues in other trucks, and said these things just happen. I now can only hope that the same issue does not occur again especially on a long trip or while hauling a boat. I have never commented online about a car before. I was surprised to see so many people with the similar problem.
I did a lot of research about this, and evidently I am not the first one having this problem and it has been proved that replacing the throttle position sensor fix it. I saw a lot of people falling on the same trap I am being leading to, and I am sorry GM, I am not falling there.
If there are problems with your vehicles, fix it, is that simple. Don't expect your costumers to pay for your mistakes.
Have you contacted customer assistance already about this? If you would like for us to check into this further, please email us at socialmedia@gm.com (include your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation thus far).
Sarah, GM Customer Service