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  1. #111


    I just had the same problem last night with my 2012 Traverse all of the sudden. So, I searched and I found this subject on this forum and many, many other forums. I have spent the last few hours reading all of these posts on here and on other sites. Here is what I have gotten out of it:

    This exact problem has been going on for many years and with many Chevy models, not just the Traverse. Many consumers have spent hundreds and thousands of dollars taking their vehicle to the dealerships several times to have several things done or replaced...and they are still having this problem. Some thought it was solved by replacing the Throttle Body only to have the problem come back after some time. GM has a TSB #11273 for this problem that only includes some years, not 2012 through current, yet I see reports of this problem being reported for brand new 2014's. GM is playing stupid and avoiding this like the plague, hoping that we will all write our little posts about the same issue, read it, not find an answer, just feel like we're “not alone”, shrug our shoulders,and accept the fact that we are screwed.

    First of all, if you are the owner of a vehicle that is less than a year old, you are in a much better place. Check your state's Lemon Law. You would be very wise to go to the dealership and let them replace this and that as many times as needed to comply with the law.Do make sure that your visits are documented proving that you were there for the same reason each time and that each visit is counted separately showing that GM failed to fix the same problem over and over. The Lemon Law will allow you to get out of that vehicle and recover the costs and get into something hopefully better and safer.If you are like some of the rest of us who haven't had this defect show up until after the vehicle is over a year old...we can either sit here like a bunch of modern day sheep and say “oh well, I guess I have to accept what is being fed to me” or we can do what previous generations have done and say “No. I don't accept this. As a consumer, I demand to be treated fairly.” This would mean actually taking action. Do you know that after I read all of these posts all over the internet, I went to the website for the NHTSA (search for the link) and I see ONE, only ONE mention of this issue from a consumer. The NHTSA is supposedly responsible for launching investigations based on numbers of complaints. I don't know if it will work, but shouldn't we try? GM is reading these forums and laughing all the way to the bank while we can't afford to keep our vehicles on the road due to a defect that GM needs to take responsibility for. If you think writing in this forum is somehow going to force GM to do the right thing, it isn't.

    As just another middle class person, that funded GM's bailout along with the rest of you, I'm asking you to take a moment to get your complaint on the NHTSA website and other sites that might actually make a difference. The numbers matter. We have to get this on record and seen by the right people so that GM can't deny their knowledge of it.

    I know I can't afford to throw thousands of dollars away on this Traverse just to go through the motions and still have a defective vehicle. It sickens me to read that so many of you have had to do it,not to mention the danger we are putting ourselves in when we drive ourselves and loved ones around with this going on. Isn't the safety and the money worth taking action that might actually have an effect?

  2. #112


    I have the same "Reduced engine power / Stabilitrac / Service traction control issue with my 2010 GMC Sierra Denali.
    The Dealer checked it out and replaced Throttle Body Sensor under warranty.... the trouble came back the next day. I Took it back to the dealer and they "reset" the computer ($90.00). It has happened 4 times since then.
    The dealer said they would have to replace the computer if that didnt the cost of $450.....or somewhere around that amount.
    They didnt seem too confident that replacing the computer would resolve the issue and I am afraid I am at thier mercy on this. I have read this thread and several other's since thier diagnosis and there seems to be several fixes for this symptom but havent heard of anyone having to replace the computer. I have a checklist of possible causes that I will let my local garage look at before I bite the bullet but just wanted to know if anyone else out there has heard of replacing the computer to fix this problem???

    Many thanks!

  3. #113


    The computer is there for emission reasons, therefore, it should be covered under the vehicles emissions warranty. Which is 8 years. Tell your dealer to replace it under warranty, or talk with the GM area rep.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  4. #114


    Thanks Ray!
    I will contact them this week and see what they will do.

  5. #115


    2007 Chevy Suburban. Had it since 2010 & warranty just ran out before this happened. Last summer, had these lights go on and engine was overheating. Took it to the dealer and it took them a whole day to find the problem. Water was leaking into spark plugs. Head gasket had warped from heat. About a week later ( with no loaner car), I got it back & it was good. Cost about $3,000. Now, I just had these lights come on, again. No overheating this time. I am hoping to get this fixed and my next vehicle will not be a Chevy. This was my 3rd Suburban, and the last one, 1999, had major engine problems. Want to mention that I have had regular oil changes and maintenance done for all vehicles I've owned. So, these lights could be ANYTHING.

  6. #116


    Hi All,

    First time post on here.. I am having the same lights come on in my 08 Sierra SLT 4x4 as of last week. Thankfully I haven't gotten the "reduced engine power" yet. has anyone had any luck using the Service Bulletin 11273 on this year and model truck? I've been known to drive through a puddle or two but haven't in a long time. Any other ideas on how to fix would be appreciated. I don't believe it is a water issue and don't want to replace the throttle body unless I have to.

  7. #117


    Quote Originally Posted by GrumblyCash View Post
    and don't want to replace the throttle body unless I have to.
    If you have the same problem as most of the folks with the 07/08 to 2014 trucks, the service guys already are aware. I went to them about mine, they finished my sentences for me. No arguing, they just booked an appointment. They change the throttle body position sensor and I was good to go. The problem did not re-appear....................and it was free, there is an extended warranty on this problem.

  8. #118


    Thanks, I called a GMC dealer last week and after the phone rang a couple dozen times and I was transferred a few times, someone finally answered and said they didn't have a clue what I was talking about. I guess I just need to go up there and explain. I hope it is the problem that's covered because the Reduced Engine Power seems to be a pretty common symptom that I don't have(and don't want to have). Thanks RayVoy. I will post how it turns out.

  9. #119


    Good luck, don't let them take in for testing until your satisfied they know what your talking about, just testing it could cost you 2, or 3, hundred.

  10. #120


    Hi GrumblyCash,

    Can I be of assistance? I understand that you had a difficult time on the phone when you reached out to your GMC dealership about the Service Stabilitrak concern you are experiencing. I do apologize that you had a bad experience trying to reach out to the dealership. I would be happy to create a case in our system to document your vehicle concern and reach out to your preferred dealership to set up an appointment to have your vehicle diagnosed. Please private message me referencing this thread if I can be of assistance.

    Jennifer T.
    GM Customer Care

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