Diesel Place banner
1 - 3 of 3 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter · #1 ·
Anyone please help us! 03 Lb7. Built trans, lift pump, Triple disc, Dan's Tcm, reputable tune.
It has shifted horribly hard from 3-4 over 70% throttle since built. I'm talking tailgate flops down, about hops off the ground. The builder has pulled it twice, second time new core, new valve body, new Dan's Tcm and new tune. Still shifted horribly. Found low rail pressures so new CP3. Still shifts bad. Changed mafs, throttle pedal, speed sensors on trans, and tcase, shifter cable and nsbu switch. Checked harness and fuse box, nothing. No codes except a shift tie once in tune 4 at full throttle that led to a third gear limp.
I'm at my end with this truck. Please help, I'm begging here.
 

·
Administrator
Joined
·
22,668 Posts
Welcome to DieselPlace
(y)
 

·
Premium Member
Joined
·
18,383 Posts
Is it defueling enough during the shift?
Buried in this thread....

 
  • Helpful
Reactions: OkDually
1 - 3 of 3 Posts
Top