4.3-5.3 motor swap wiring question... with a twist
#1
4.3-5.3 motor swap wiring question... with a twist
I have an 01 silverado RCSB 2wd 4.3 5 speed truck. I am swapping in an 01 5.3 from a tahoe with an auto, and 4wd. The wiring harness for the V-8 is also setup for an auto with 4wd.
Any one know of any information on how to convert the 5.3 harness to work with a manual? OR should i look for a 4.8 harness from a 2wd truck with a 5 speed?
Any one know of any information on how to convert the 5.3 harness to work with a manual? OR should i look for a 4.8 harness from a 2wd truck with a 5 speed?
#2
TECH Senior Member
iTrader: (5)
I have an 01 silverado RCSB 2wd 4.3 5 speed truck. I am swapping in an 01 5.3 from a tahoe with an auto, and 4wd. The wiring harness for the V-8 is also setup for an auto with 4wd.
Any one know of any information on how to convert the 5.3 harness to work with a manual? OR should i look for a 4.8 harness from a 2wd truck with a 5 speed?
Any one know of any information on how to convert the 5.3 harness to work with a manual? OR should i look for a 4.8 harness from a 2wd truck with a 5 speed?
#5
My truck is staying a manual, and 2WD. the only thing i am swapping out is the motor, and the wiring harness.
I know the PCM needs a reflash
If i got a 4.8 2wd manual harness, why would I have to combine it with my original harness?
I plan to pull the 4.3, toss it.... pull the fuse box, remove the 4.3 engine harness block from it, install a V8 harness block into it, and reinstall the fuse block.
I would like to pull all un needed wires from the current 5.3 AUTO 4wd harness i have, and use that. If that is not possible, i will get a new harness.
If it is possible, Does any one know what I need to do to my current 5.3 auto 4wd harness to work in a 2wd manual configuration?
I know the PCM needs a reflash
If i got a 4.8 2wd manual harness, why would I have to combine it with my original harness?
I plan to pull the 4.3, toss it.... pull the fuse box, remove the 4.3 engine harness block from it, install a V8 harness block into it, and reinstall the fuse block.
I would like to pull all un needed wires from the current 5.3 AUTO 4wd harness i have, and use that. If that is not possible, i will get a new harness.
If it is possible, Does any one know what I need to do to my current 5.3 auto 4wd harness to work in a 2wd manual configuration?
#7
Custm2500's Rude Friend
iTrader: (17)
You will need a pin out of the PCM for an Auto 4x4 and a manual 4.8.for 2001 Year.
You really only need to wire up the Neutral saftey switch, I am assuming the VSS will plug in but if the sensor is different or has a different plug you will need to re wire that.
You can move the front diff actuator wiring and Auto track wiring if it was so equipped unless it was a manual shift 4x4.
You can also use a 4.8 Manual trans wiring harness if you can find one complete. That will be much harder to find though...
You really only need to wire up the Neutral saftey switch, I am assuming the VSS will plug in but if the sensor is different or has a different plug you will need to re wire that.
You can move the front diff actuator wiring and Auto track wiring if it was so equipped unless it was a manual shift 4x4.
You can also use a 4.8 Manual trans wiring harness if you can find one complete. That will be much harder to find though...
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#10
This is the info I need, and what I'm looking to do.