Gas mileage decrease after TSB-00-77

[Charles patry]

After the TSB-00-77 update my gas mileage has only been 14-15 mpg. How about everyone else.

What do you mean by tsb-00-77 uptade..thanks

 

[jnsmith76]

I had the delay from reverse to drive and lunging while cold. Got the update and it did fix both issues. My gas mileage actually is better after update.

 

[snytt]

Update what?

 

[TacoGal]

Snytt--- transmission software update

 

[snytt]

Really! l've been waiting for this, thanks

 

[InfernoToy]

Is the drop in mpg after update in thr 6 cylinder engines as well as 4 cylinder engines?