Not1lost

repost

A LAWSUIT HAS BEEN FILED AGAINST GM ABOUT THIS 8 SPEED TRANSMISSION ISSUE. here is the link to the suit. https://www.carcomplaints.com/news/2018/gm-8-speed-transmission-fix-lawsuit.shtml

Sorry to hear that. I can’t believe that GM is allowing this to continue without something serious being done about it; pathetic for a company like this just brushing this aside as if it didn’t exist... I had to really push; threatening with my lemon law book to get them to do a complete torque converter replacement. I have put about 3000 miles on it since this and haven't had a problem with it since. However I still read the horror stories of it continually coming back which keeps worried. It makes me wonder if they are just doing enough to keep you driving until the warranty goes out??? I'm thankful and keep praying mine will hold up. I really love this truck in every way except this. Maybe it just takes getting the newer torque converter but your story makes me wonder about that because you would think with a 2019 it would have it already in it? This makes me even more concerned. However there may be something that they did or put in my truck and others that were finally fixed that is more expensive for them and they are reluctant to do it without a push? It did take pulling the motor and transmission and keeping the truck for a week giving me a loaner. I'm thankful that they did give me a very nice new vehicle to drive while they had it; a 2019 Acadia 'loaded' I wish you well

THANKS A BUNCH! That is a BIG relief! I can have a little more confidence in my truck now. That's just not what I had experienced in my job at AHTD we had a different system. I was the one who had to also keep inventory on everything coming in and going out. Had me worried... Still wondering why I am seeing posts by some 2018 owners having issues as well but not 2019 owners yet. Again Thank You so much!

IS THERE ANYONE OUT THERE WITH A HIGH MILIAGE GMC CANYON 8 SPEED - HOW MANY MILES? Or Colorado of corse. I'm trying to figure out if this truck is worth keeping or I should get rid of it while its newer and worth more money? Any help would be appreciated. Thank you in advance for your response.

The point I'm trying to make is that the work order is showing THE SAME NUMBERS for the torque converters - the one taken out and sent back in (core) and the new one put in... Therefore how would you know it is THE NEW ONE? Same numbers? same part? no? I was a service supervisor for a big co before retiring and even the same part has a differing number if it has been changed or from a different manufacturer. Concerned...

I just looked again and according to the receipt it has the same numbers for the torque converter that was taken out (core return) as the one they put in??? Thanks a lot, you have been a big help, I appreciate it.

I just looked again and according to the receipt it has the same numbers for the torque converter that was taken out (core return) as the one they put in???

Yes that’s the exact numbers for the converter and fluid. Is that right? What does that mean to me and my concerns ? Thanks for your reply

have a 2017 Canyon V6, 4x4 SLE started doing the same thing at about 12000 mi continually getting worse! The worst shudder shaking is at about 55 steady speed with slight off and on exelaration to hold the speed in cruise or whatever. However it will do it at nearly any speed at times. Yes it helps when cruising at hwy speeds to downshift to 7th but that’s not what you should have to do! Besides it will do it in 7th too when it pulls just right up a grade.I thought the tires were out of balance and took it back to the dealer which re-balanced all of them and didn’t help at all. So I have another appointment next week. Going to give them a ride and shake their teeth out to show them what it is doing! The truck only has a little over 14000 mi. On it so this is completely unacceptable! And getting worse! I noticed the transmission temp. Probably already damaged the internal parts... After all I have read on this forum and other about this I don’t think I’m going to go along with all the “we’re going to fix it crap” and tell them either buy it back or give me another “new” different kind of truck and transmission maybe like the Duramax since it has the 6 speed in it. —————————— update: Took it to the dealer another day and had the service manage ride with me to show him and have it documented that it will shake your teeth out while cursing. however when he got into the truck he said "I'll take a ride with you but I am well aware of this problem, I know what it is doing.” I'm sure he does... he then told me they have to go through "the process" and do triple flush to see if that fixes it. said it probably would but if not they would put a new torque converter in it. I said if that will for sure fix it why not just go ahead and put it in there? GM says have to do the flush first... yeah$$$ I told him even if it fixed it how much damage has already been done to the longevity of the truck? Oh he said the transmission is fine... yeah sure. I had the lemon law book laying in the console so he could see it but said nothing. He knew what that meant... this whole thing makes me sick. I have always trusted GM and now they are trying to cover up an obvious recall issue. sickens me. ——————————- Update again: Next visit to the dealership to do the triple flush on the shuddering transmission. while I was in the lobby waiting (only a few minutes) reading my lemon law book; the service manager came out and said it looks like we have an update on fixing your transmission. now GM is saying go ahead and skip the triple flush and replace the torque converter. well well, that's what I asked about to begin with if they knew it would fix it, why not!? so they kept it about a week to replace the torque converter. I've driven it about 700 miles so far and it is very smooth, no shaking or shuddering so far. the thing that worries me is how much damage did it do to the rest of the transmission driving it with the wrong fluid in it and the torque converter going out (metal shavings pumped throughout the transmission) what is going to happen say 50,000 miles down the road? this was to be my last new truck since I am retired and on a fixed budget. I won't have the money to pay for replacing a transmission... concerned, don’t know what I should do even if it seems like it's fixed? Any advice would be appreciated; thanks

Update again: Next visit to the dealership to do the triple flush on the shuddering transmission. while I was in the lobby waiting (only a few minutes) reading my lemon law book; the service manager came out and said it looks like we have an update on fixing your transmission. now GM is saying go ahead and skip the triple flush and replace the torque converter. well well, that's what I asked about to begin with if they knew it would fix it, why not!? so they kept it about a week to replace the torque converter. I've driven it about 700 miles so far and it is very smooth, no shaking or shuddering so far. the thing that worries me is how much damage did it do to the rest of the transmission driving it with the wrong fluid in it and the torque converter going out (metal shavings pumped throughout the transmission) what is going to happen say 50,000 miles down the road? this was to be my last new truck since I am retired and on a fixed budget. I won't have the money to pay for replacing a transmission... concerned, don’t know what I should do even if it seems like it's fixed?

update: Took it to the dealer today and had the service manage ride with me to show him and have it documented that it will shake your teeth out while cursing. however when he got into the truck he said "I'll take a ride with you but I am well aware of this problem, I know what it is doing. I'm sure he does... he then told me they have to go through "the process" and do triple flush to see if that fixes it. said it probably would but if not they would put a new torque converter in it. I said if that will for sure fix it why not just go ahead and put it in there? GM says have to do the flush first... yeah$$$ I told him even if it fixed it how much damage has already been done to the longevity of the truck? Oh he said the transmission is fine... yeah sure. I had the lemon law book laying in the console so he could see it but said nothing. He knew what that meant... this whole thing makes me sick. I have always trusted GM and now they are trying to cover up an obvious recall issue. sickens me.

I have a 2017 Canyon 4x4 SLE started Shuttering and shaking at highway speeds at about 12000 mi continually getting worse! The worst shudder shaking is at about 55 steady speed with slight off and on exelaration to hold the speed in cruise or whatever. However it will do it at nearly any speed at times. Yes it helps when cruising at hwy speeds to downshift to 7th but that’s not what you should have to do! Besides it will do it in 7th too when it pulls just right up a grade.I thought the tires were out of balance and took it back to the dealer which re-balanced all of them and didn’t help at all. So I have another appointment next week. Going to give them a ride and shake their teeth out to show them what it is doing! The truck only has a little over 14000 mi. On it so this is completely unacceptable! And getting worse! I noticed the transmission temp. Will get up to around 150º at times and the hotter it gets the worse it gets; probably already damaged the internal parts... After all I have read on this forum and others about this I don’t think I’m going to go along with all the “we’re going to fix it crap” and tell them either buy it back or give me another “new” different kind of truck and transmission maybe like the Duramax since it has the 6 speed in it. Any advice would be well taken on this issue. THANKS