retired-caracer

Well my 2018 GMC Sierra(120,000 miles) torque converter just started shuddering on the way home Sunday to Texas from Arkansas. I was in the hills of eastern OK. I slowed down and it seemed to go away. But then when I got to more level ground and had the cruise set at 60mph, all of a sudden my rpm raced to 6000 and I kicked it off. I had been monitoring the transmission fluid temp reading since the shuddering started and now it was up 20 deg from 185 to 205 and climbing. The shuddering was back constantly. I pulled off the highway into a nice gas station/restaurant and called a friend back home that works on transmissions. His immediate conclusion was the torque converter failure(common he said). He said the average failures he sees are around 120,000 miles. I was still 200 miles from home. Got a hotel room and started asking around with the locals for a good transmission shop. I immediately got several good references to a shop. Next morning I was sitting at the shop waiting on the owner. He told me "you are the 3rd one of this transmission this week" (small town)!! He quoted me $3000 for stock rebuild with 1yr warranty or $4000 with a stage 1 shift kit and aftermarket billet convertor and 3 yr warranty. I need to keep the truck so I opted for the $4000 rebuild. I think I may have just purchased my last GM product. A/C failure and radiator louver shroud failure and now tranny.