What tranny temps are you getting with the 5.3/6.2 with the 10 speed?

[lpg]

very weird the other day, the monitor on my programmer had tranny running about 50 degrees higher than the dash showed...almost 200 while at idle. 

Going to do some digging and see which was right

[mathnerd]

Just towed my sons car on a UHaul trailer, so about 5000 lb. Total of about 350 miles mostly around 70 MPH. 2019 6.2 w/10 speed. Was between 163-169 deg the whole trip.

[Anon12345]

10 minutes ago, mathnerd said:

Just towed my sons car on a UHaul trailer, so about 5000 lb. Total of about 350 miles mostly around 70 MPH. 2019 6.2 w/10 speed. Was between 163-169 deg the whole trip.

 

Damn those are good temps!! What was your mpg along the way?  5.3 or 6.2?

[Anon12345]

On 4/8/2022 at 2:46 AM, lpg said:

very weird the other day, the monitor on my programmer had tranny running about 50 degrees higher than the dash showed...almost 200 while at idle. 

Going to do some digging and see which was right

Did you ever find out which was right?  Im assuming the programmer was glitched. 

[mathnerd]

22 hours ago, Anon12345 said:

 

Damn those are good temps!! What was your mpg along the way?  5.3 or 6.2?

6.2 averaged 12.5

[Sneaky pete]

2020 Sierra l84 5.3  10 speed trans runs at 144 degrees  all day long. No load.

[DMack]

My 5.3 gets tranny fluid every 60k miles. I do run the BG synthetic fluid. Best I have seen in years.