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4l80 trans questions
Ok I figured it out. The tune file has a 4l60 file loaded. Couldn’t find the correct one to do the correct segment swap. I had another pcm for a 6.0/4l80 so I went in and unlocked it and tuned it, put it on and it fixed the issues. I wound up bypassing the relay on the tcc lock also. First time...- LouisO87
- Post #7
- Forum: LSX + Carb Swaps
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L
4l80 trans questions
Ok so changed the trans in the computer from a 4l60 to a 4l80 and rewrote the program and still doing the same thing- LouisO87
- Post #5
- Forum: LSX + Carb Swaps
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L
4l80 trans questions
ok i think i figured out the problem. im going to by pass the tcc relay and hook pin 33 straight to the brake pedal that way it works like it should. the trans issue i belive has to do with tuning. im throwing 2 codes p 0785 and p0740 which is consistent if the pcm is tuned for a 4l60 and not a...- LouisO87
- Post #4
- Forum: LSX + Carb Swaps
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L
4l80 trans questions
i just edited the post after doing just that. sorry just a lot to retype lol. in a nutshell pin 33 runs to standalone fuse box with relay labeled tcc. without hooking up the white wire to the brake switch it has 12 volts no matter if brake is applied or not. pulled the relay and ran a jumper...- LouisO87
- Post #3
- Forum: LSX + Carb Swaps
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L
4l80 trans questions
ok so im in the process of wiring up my 04 5.3 ls into my 97 1500. ive got it running and most of it is done but i have a few things ive ran into. I have no clue where the ls harness came from or who made it, it was supplied with the truck when i purchased it and had never been hooked up. #1...- LouisO87
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- Replies: 8
- Forum: LSX + Carb Swaps
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