Why the truck wont lock on cruise mode?
I try to lick it up in 3rd gear and 4th gear but it wont, if lock it through the scanner it will but not by itself. I have the truck to lock under 45 miles all the way under 50% tps.
The tranny is built with a 3600 PI.

Any suggestions? I have done plenty of truck and they lock with any problem.

 

But it will lock when not in cruise? If so check your cruise tables to see how they compare to normal.

 

You could post the tune file and get better help.

 

Let me post it up.

 

I change pcm and it lock up. Maybe something is wrong with pcm

 

What?

 

I swap to a different pcm and it work, now it locks on cruise mode.

 

Did the PCM you swapped to have the same tune loaded into it?

 

No but it had around the same miles and tps % to lock.