MY 2002 GMC ENVOY REVS AT A VER HIGH RPM. WHEN THE SHIFTER IS PLACED IN REVERSE, IT DOES NOT ENGAGE. THE VEHICLE ONLY GOES FORWARD. IT INITIALLY REVS @ OR AROUND 5000RPMS AND MAKES A HOWLING NOISE. MY DAUGHTER TOLD ME THAT WHEN SHE TOOK HER FOOT OFF THE GAS THE TACHOMETER SHOWS THE RPMS AT ABOUT 1200 AND THE VEHICLE MOVES. SHE ALSO STATE THAT IT MADE A LOUD NOISE THAT CAUSE HER TO STOP THE CAR AND GET OUT TO SEE IF SHE STRUCK SOMETHING. WHEN I GOT IN AND TRIED TO DRIVE IT THE RPS WERE WAY UP BUT THE CAR HARDLY MOVED AND IT WAS DEFINITELY MAKING THAT HOWLING NOISE. THE ENVOY HAS 120,000 MILES ON IT. HAS GM HAD ANY RECALL PROBLEMS RELATED TO ISSUES LIKE THIS?
Country: United StatesMake: GMCModel: ENVOY 2WDYear: 2002Engine: VORTEC 4200 INLINE 6 CYL
David, Thanks for trusting us with your problem. I have trained in the automotive field and currently work as a shop foreman. I will be helping you today.There is no recalls on this model. I just went and verified for you to be 100% certain. Working in the shop daily I do come across several of these. I have has a instance of the issue you have described. What has happened is the stator support shaft splines going into the torque convertor are bad causing the transmission to appear to work in drive but actually is slipping heavily. You will need to Remove the transmission. Inspect the stator support shaft splines. Check the function of the one-way clutch for the stator inside the torque converter. Repair as needed. Worst case you have internal failure. Best case you need a replacement torque convertor or stator support splines which are located where the torque convertor slides on. I know this is not the information you want to hear. It is bad news no matter who is telling it. I can answer any follow up questions you may have about the issue your having. Please rate when satisfied this is only the expert not the site you are rating. please do not leave a negative rating because I was the one who gave you the negative news. Thank you!proautotech41090.2561107639
CAN YOU GIVE ME AN ESTIMATE OF HOW MUCH YOU THINK THIS WILL COST TO REPAIR? AND SHOULD I TAKE IT TO A DEALER OR A MECHANIC?
David, Thanks for your prompt reply, Yes I will break it down for you here. If the issue is just the torque convertor 398.71 Plus tax and - Labor for transmission R and R (remove and reinstall) which apply to all 3- 6.0 Hours of labor which is times the hourly rate of anywhere from 60-120 (120 being dealer highest price some are less)If the issue is the stator support splines- 286.97 parts plus tax and labor of R and R of transmission plus the additional labor of 3.8 hours to replace.If the transmission needs to be replaced-1857.31 Brand new GM one plus the labor of 6.0 hours.I would recommend the dealer unless you know a local mechanic who is very skilled with transmissions. I have found a few customers coming to me from another who was unfamilar ending up costing more than the dealer would have charged.Thanks for your questions, I hope I have helped you in your automotive concern.
THANK YOU FOR ALL YOUR HELP. I NOW HAVE A BETTER UNDERSTANDING.
David, That is what we are here for. I hate when it is bad news. It is always great to give advice that fixes the problem for near nothing. But this is the correct information.I hope you will still rate me as an expert on the site. Any of the positive ratings give me credit for my assistance. I wish the best for you. Thanks
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