trans lag on 02 denali

[unklmony]

HAve a heavy foot...noticed a lag in shifting when trans is kicked down at highway speeds..shifts fine otherwise, seems to happen more often once up to temp.. Anyone with similiar probs? its a 6.0 in 02 Denali AWD

 

[BlizzardX23]

I did too...I got a BB Tune and now I have no more problems! Its the way GM tuned these trucks....contact BlackBear...

 

[louisrcastro]

Omg!!! Finaly!!!
Yup me too!!!
My 02 denali does that crap too