Huge thanks to everyone that provided information. The solution for me was to go into the PCM and change the "Type_Of_AC_On_Vehicle" to 2=Analog. The system work great now.
The '96 1500's A/C wiring has the Pressure Cycling Switch and A/C High Pressure Cutoff Switch in series which comprise...
Need help with the AC in my LS Swap. I installed a '99 Corvette LS1 into a 1996 GMC C1500 4.3. The PCM is from the 99 Vette. I'm running dual eFans.
I'm just not getting GND at A/C Clutch Relay Control (C2-43) which would energize the relay and engage the clutch.
PCM inputs:
A 51k resistor...
Thank you for the quick reply. It's a 2wd with a 10 bolt with a 4.3 V6
Can you talk to me more about the 3.73 upgrade? I'm planning on a 4/6 drop. I use it to drive to the Home Depot for Mulch and other non-sense.
My mechanic is telling me I need to consider rebuilding the Diff on my 1996 GMC 1500 W/T. The options are rebuild or replace with good used.
If I were to go with the replacement, what years are compatible? Cause I can swap a rear end and save the labor.