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Never ending TCC mystery problem (4l80e)

For the last 3 years i have been having a problem with my TCC that i can't seem to figure out. If im going over 60mph for more than 15 seconds the TCC will quickly disengage. But if i drive under 60mph the TCC works just as it should without a single problem. Theres NO fault codes at all...
- Turbokat
- Thread
- Aug 21, 2021
- Replies: 14
- Forum: Transmissions
Feels slow even after rebuild and rough idle

I'm just curious of what the acceleration should be with these trucks and what can cause them to run fine but just be a dog when you floor it. Please note that the speedometer is in km/h This is how it was when i bought the parts truck. It was just a pig even WITH 4.10s!! This is after the...
- Turbokat
- Thread
- Sep 18, 2018
- Replies: 19
- Forum: 96+ Vortec Performance + Computer Swaps
no power to injectors after swap (5.7 vortec)

I have been swapping my 99 2dr tahoe (originally a 6.5) over to a more typical 5.7 but i can't get my rebuilt engine to fire from its own fuel. I had a security issue in the beginning but after re-learning it lights up under bulb check as normal. the engine ran fine out of the donor suburban...
- Turbokat
- Thread
- Aug 8, 2018
- Replies: 12
- Forum: Engine Performance + Maintenance