2021 Tahoe, no reverse

[Jroh]

Hey guys new to the group. Just bought a 2021 Tahoe 5.3 Z71 a few months ago.
Battery Died overnight. After jumped the transmission shifts rough at times and won’t swift into reverse.
Taking to dealership on Monday but anybody have any ideas?

 

[Big Mama]

Welcome to the forum from Virginia. My guess is the computer that controls the transmission got a big voltage spike. It’ll be interesting to hear what the dealer says. Hopefully it’s still under warranty?

 

[Jroh]

Welcome to the forum from Virginia. My guess is the computer that controls the transmission got a big voltage spike. It’ll be interesting to hear what the dealer says. Hopefully it’s still under warranty?

Thank you for the input!

 

[Big Mama]

How did it go at the dealer?

 

[Ta-dahoe]

I posted a few weeks ago and the "no reverse" is exactly how my problems started. Hoping to have resolution in the next day or so.

Strange that it was correlated with battery failure on your end. Hopefully, your issue gets sorted faster than mine. What did they say yesterday when you brought it in?