2020 1500 5.3 8-speed trans temp

[trp34g]

My new to me 2020 8-speed trans routinely runs 172-180F. Towing 3500# camper, temp surged to 240F, then settled down to 180F in about fifteen minutes. 43000 miles. I know about TBV change to 70F update. Taking to dealer tomorrow, want to be informed as I can be. 

[Bikerjon]

On 12/11/2023 at 1:13 PM, trp34g said:

My new to me 2020 8-speed trans routinely runs 172-180F. Towing 3500# camper, temp surged to 240F, then settled down to 180F in about fifteen minutes. 43000 miles. I know about TBV change to 70F update. Taking to dealer tomorrow, want to be informed as I can be. 

What did the dealer say?

[Earl Cordova]

Bet the dealer says it is OK and there is nothing to be done.

[trp34g]

Ding, ding, ding. We have a winner. 

[Gangly]

Install the TBV and be done.

[Bikerjon]

2 hours ago, Gangly said:

Install the TBV and be done.

Or not and wreck the transmission.