bulldog77

Thanks reardiff, I took it to the dealer today and they flushed it. I could tell it drove better right away. He also told me that nationwide 98% of the transmission flushes GM has done has corrected this problem on a long term basis so we will see...

I am going to take it to the dealer tomorrow. I believe the warranty is 60000 miles or 60 months and I am within one month of the 60 month time period, I will see what they want to do... Thanks for your input.

Leatherneck I don't know how to add fluid to the transmission, my manual says that it is sealed and I know there is no dipstick...

I have a 2016 Sierra 1500 with the 8 speed transmission and was told I have torque converter shake. The mechanic who drove it told me to take it to the dealer and let them know about it and they would probably flush it but it probably wouldn't last but a short time. I would like to know what have you folks experienced with this problem and what was done to fix it. Thanks for any input.

I have a 2016 Sierra 1500 with a 5.3 with an 8 speed transmission and I have been experiencing a vibration lately. It feels like running over small rumble strips and it is intermittent. I have had the tires checked and they are all fine. I also thought about a wheel bearing but it is not making a noise like a bearing. I let a mechanic drive it today and he tells me I need to take it to the dealer. He says that it has torque converter shake. I have never heard of a problem like that but he told me that some 8 speed transmissions have that problem. He also told me that a flush would only be a short fix for it. Have any of you guys had this problem and what did you do to fix it? Any info. will be appreciated.

Thank you but I found a way to get what I was looking for...

I just purchased a 2016 GMC Sierra and would like to know how to decode GM vin numbers to determine specifically the rear end ratio in this truck. Also is there a website where I might be able to find an original sticker or a list of installed options. Thank you for any help.