Wiring/Tranny question.
04-03-2010, 10:56 PM
#1
Launching!
Thread Starter
iTrader: (10)
Join Date: Oct 2008
Location: Winnipeg Manitoba Canada
Posts: 293
Likes: 0
Received 0 Likes
on
0 Posts
Wiring/Tranny question. I have a 1993 GMC Typhoon and I am looking at putting in a 2004 LS-1 C-5 engine.I also have a 4L80-E tranny( from a 1998 GMC 2500 4x4) with a stock convertor.I am getting all the accesories with the engine including harness. My question is about the harness and computer. Can I use the harness and just change the plug so it works with the tranny? Or is there more to it than that. Also can I just reprogram the computer for the rear end gears and tire diameter so the speedometer reads correct. Should I change up the convertor since everything is out and if so what stall should I go to? Any other help would be a bonus.
04-04-2010, 10:22 AM
#2
You can modify the harness to work. You will need to add in the input speed sensor wires and move a couple pins in the round plug. Then you will need a segment swap done to the pcm to have the engine/trans combo programmed correctly. Speedo calibration is easily adjusted in the pcm.