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Canyon Conundrum

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  1. The saga continues- Let me back track a bit Torque convertor replaced Aug 2018, Fluid flush done after that (old fluid not updated fluid) A reprogram after that Shudder came back after all 3 repairs (Shudder,fishbite,chuggle are all terms used for describing torque convertor lock up clutch issues) Then the "no further repairs available" After filing with BBB in Dec 2018 GM agreed to a MSRP to MSRP trade with me paying any increases (more options than I had) I have a 2017 GMC Canyon,I picked out a new 2018 Canyon. I took it overnite (thank god) and found it doing the same thing!! Brought it back to dealer and went to arbitration with BBB Had arbitration hearing at BBB office GM represented themselves by phone and offer a "fix" with a new updated transmission fluid.I accepted By now its Feb 2019 Had new fluid flush done in April 2019 was good for a while then shudder slowly came back (Dealer was slow to get new fluid in) Back to dealer they said "slight chuggle felt, this is not a shudder" (aug 2019) Back to dealer again to have a Field Service Engineer to test drive. To quote him "transmission performing as designed" Back to BBB ,reopened case, its pending (oct 2019) Now I have 5 tries to fix it Now I am requesting a buy back- Good thing I don't have any guns in the house! 36K for all this! Unbelievable! Good luck Let me know if I can be of help
  2. I have a 2017 Canyon v6 8 speed. With torque convertor shudder for over a year now 4 tries -torque convertor,fluid flush (old fluid) reprogram,fluid flush with updated fluid, Its doing it again! 17k miles Opened BBB case for by back-
  3. Its not the tires-it the torque convertor! Don't let them tell you anything else! They cant fix it!
  4. Don't do it I had a 2019 GMC Canyon 8 speed with 5k on it as a loaner as they tried to fix my shudder. It was the worst 8 speed I ever drove way worse than mine. Shudder on highway after warming up, terrible
  5. Had updated fluid flush done in March 2019 Was good for a while. Fish bite / chuggle slowly came back. Just like the 3 "repairs"prior. Then it morphed into a full shudder. Which I am sure it will do shortly.Torque convertor was replaced,fluid flush(old fluid) and a update installed. I had a Field Service Engineer take it for a ride last week. He said "transmission performed as designed" If that's so then why did GM try to fix it 4 times? When I took the vehicle on a test drive if the transmission had "performed as designed" with the shudder evident I would not have bought it! I have opened a Better Business Bureau case hopefully for a buy back.This has been going on for over a year now.This is the worst new vehicle buying experience I have ever had. Doubtful I will ever buy a new vehicle again. At least not a GM product. If I bought a used vehicle without a warranty and I had transmission issues I could take it to a reliable transmission shop and the issue would be fixed.I have a new vehicle with a warranty with a transmission issue and GM cant fix it!
  6. Yes! Goggle it One site has the complete court filing, its good reading. One person describes the 8 speed as a disaster! Its about time ,thank god we live in the USA And we the people bailed out GM and this is what they give us? Totally unacceptable. I am in the middle of a GM buy back, not MSRP to MSRP , I want out of GM Vehicles. My last repair order stated no further repairs available. You cant stand behind your product?? Its like the 80's when US cars sucked and people flocked to foreign vehicles . Hate to say it but I may be shopping for a Tacoma when all is said and done. Good luck to all with 8 speed issues and feel free to post!
  7. Update After a trans flush appointment and a reprogram appointment (now I have a shift flare between 2-3-4) (I did have convertor replaced first) The shudder is still there along with rpms fluctuating 2-300 rpms. dealer was in touch with TAC and the reply was "no further repairs available" Just filed with BBB. Its a shame could be a nice truck.
  8. Hi I have a 2017 GMC Canyon Shudder started at 8000 miles . Torque convertor was replaced . Shudder slowly came back at 200-300 miles after convertor change .Shudder is worse now then before. Back to dealer for 2nd time they did adaptive shift update. Picked up vehicle last Wednesday shudder is still there and now I have an rpm flare when it shifts gears. I have another appointment for next Wednesday. I am waiting for 4 tries to fix this problem then I am filing for Lemon Law. The dealer has nothing to loose if you file for Lemon Law,its GM that has to pay you back what was paid for vehicle out the door less mileage. Its hard not to get upset at dealer but they are doing the best they can. They are doing what GM tells them to do . I hope your issue doesn't reappear. Let me know if it does. Thanks
  9. Is anyone not having issues with the 8 speed transmission in 2017+ Canyon/Colorado models? Just thought I would throw that out there to see how many are and are not having issues. I had my convertor changed at 8k and within 300 miles shudder is back with a vengeance . Thanks
  10. Any one out there with the 8 speed transmission not having issues?? Just thought I would throw that out there to see how many are having problems and how many are not. Thanks
  11. Let me throw this out there-does anyone have the 8 speed transmission with out any issues? Thanks
  12. After about 300 miles shudder is back. And yes it was the "updated" convertor which was installed. Back to dealer again this Thursday. That will be 2nd try and counting. I am really disappointed in this vehicle. I have to go thru the motions before I can do anything. Trust me a real fix would be outstanding as it could be a nice truck.
  13. Had Torque Convertor changed and cooler flush per bulletin 18-na-177 . All is good, no shudder seems to shift a lot better. Dealer did a fine job as to getting me a loaner vehicle to keeping me informed as to what was going on. I didn't buy the vehicle there but it was closer to me than selling dealer. None the less they treated me like I bought it there. Very impressed
  14. I made an appointment at a different dealer than the selling dealer, which told me they currently had no transmission tech.And to get back to them in 2 weeks they should have someone by then.I felt uncomfortable with a "newbie" trying to tackle the issue. I have had them do warranty work on my prior GM truck-they were excellent.
  15. Also if this helps, For what ever reason the shudder seems more prevalent with a 1/4 tank or so of fuel on board. Its sounds crazy (could be) but that's what im seeing. Extra weight with a full tank than a 1/4 tank ? Don't know but if I take a trip an run it down to a 1/4 tank shudder is more prevalent. Maybe its a trans temp issue on a long run-
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