BenE

Not sure why GM has decided to change what is covered under their powertrain warranty, but it seems that they are trying to screw over customers. I had the P1098 code pop up on my 2021 GMC 1500 3.0 Duramax at about 58K miles. I didn't realize what it was, but I was unable to get it into the shop for another month (not many shops out here) so by that time it had 67K miles. The check engine light comes on and goes off and sometimes it goes into "engine power reduced" mode. When I took it in, they dealt with a transmission recall issue and said they reset the DCT as per a GM memo. They said it was done so I went to start it with the auto-start as it was cold that day, but it wouldn't start. I got in and started it and the check engine light was on so I drove it back around to the service door and informed them. They kept it for another hour and then stated that the Coolant Control Valve needed to be replaced due to the P1098 code and it would be just under 2K. I asked why it wasn't covered under the powertrain warranty and they stated that GM decided to change what was covered under the powertrain warranty to specifically exclude this problem. They said they worked with GM since I was a first-time customer and GM agreed to "help" cover the cost by paying 10%, leaving me with over $1600 to pay for this known issue. This is not acceptable. I am rapidly losing faith in GM since they would rather screw over customers over a $2K known issue than do what is right. Sub-quality parts are clearly being used, leading to the coolant control valve module failing on so many trucks. The right fix, and the only one that would ever keep my, my family, my friends, and everyone I work with in the military as GM customers is to fix this under warranty.