2000 Grand Am Wiring Diagram

[SeizureNoodles]

I can't seem to find service manuals anywhere for download. Anyone have any sources? I am trying to wrap my mind around the wiring and whether I need the BCM or not. I plan on rebuilding this motor(3400) and swapping it into my Fiero, but have no idea what the wiring looks like.

Of course I am asking this before I actually pull this apart, but wiring is a whole different beast than mechanics. I am trying to find out exactly what to pull and how to make it work at the moment. I am thinking I can manage without the BCM and just grab the PCM and wiring that goes directly to the engine, but this is going off of my 240sx engine swap where most of the wiring went straight to the motor. All I had to do is splice about 8 wires to make it run. For some reason, I have a feeling this swap will be a bit more difficult.

Plan on grabbing PCM, OBDII connector, and any wiring between the pcm and engine.

[caffeine]

You don't need the BCM but you will probably need to flash the PCM to delete VATS. Alternatively you can re-pin the stock 2.8 harness for a 7730 ECM, change out a few pigtails and use/make a 3400 swap chip. That method is well documented.

[SeizureNoodles]

You don't need the BCM but you will probably need to flash the PCM to delete VATS. Alternatively you can re-pin the stock 2.8 harness for a 7730 ECM, change out a few pigtails and use/make a 3400 swap chip. That method is well documented.

I forgot to mention I have HPTuners, I will delete the VATS. I'm not sure why I didn't do that earlier, my ignition was going out and tripping out the security for a few years.

[caffeine]

Sounds like you've got it well under control then

[ericjon262]

I have an ECM pinout posted here. no diagram though.

http://www.gearhead-efi.com/Fuel-Injection/showthread.php?1898-GM-V6-PCM-pinouts