2019 Chevy Blazer Forum banner

Transmission whine deceleration

3508 Views 4 Replies 4 Participants Last post by  Tholt05
I have a 2020 V6 nine speed Chevy blazer. The Transmission is very smooth when shifting. However when you decelerate there is a high-pitched whine as the car slows down. Does anybody else hear this?
1 - 1 of 5 Posts
2021 Blazer in for transmission service with only 5,000 miles. Codes p0700, p25a2, u0146
We heard a strange noise at 65 to 75 mph but no code at that time.
Has been 4 days in dealer and the service advisor cannot tell me what the problem is and any timeline for a fix.
Has anyone else had this problem?
1 - 1 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.