I'm tuning a 2007 GMC 4.8/60E truck using 2.22 HPT. Never had this issue before...

I purposely never change the throttle tables due to the possibility of damage to the PCM, TAC module. Tuned the truck and intermittently on take-off it has absolutely no throttle response. Read the TPS PID and its not responding to throttle input. it gives no more than 40% even at WOT. This condition is only present in first gear for some reason also. I'll post the file later when I'm on the computer I tune with, on my work laptop right now.

Anybody ran into this? I've never had one do this to me yet. This is a GMT900 truck BTW. Thanks guys.

 

07 TBSS "dead throttle" after tuning help - HP Tuners Bulletin Board

gonna try this... maybe it'll work out. Never had a problem with it in the past though.

 

No reason to even touch that abuse table imo. Modify the minimum torque mgmt table ;-)

 

I literally had my truck tuned locally on Saturday and I'm having the same problem. I have to put the truck in park, and back in drive for it to move. It randomly does it too.

 

I've never had this issue or heard of it before but i HATE **** like this, drives me crazy!

 

Could this simply be a re-learn issue for the adaptive shift?

 

It's well known that going on a "zeroing out" spree on the 07+ trucks causes issues like this.

 

I've done other tunes the same identical way and never had an issue in the past. The guy still hasn't gotten back to me so I can fix the file but I'll report back as soon as I do.

 

Please do so I can resolve my issue too!

 

The HP Tuners Forum shows a solution to our issue....

2007 silverado 5.3 acceleration problem - HP Tuners Bulletin Board