Can someone please shed some light on this? there seems to be VERY little information on this. Sorry, but its true. GM sells what seems to be 3 versions of their IAC (all 4 wire) but nowhere is it documented the schematic so i can wire this up correctly. i have a sport 2000 btw.

Thanks to anyone that has one thats working. i got a s4 to s6 intake adaptor, s6 intake, an s6 to 90mm GM TB adapter, and a holley 90 MM TB. thats why im asking.

 

Use the S6 BAC valve. No reason to not use it.

 

This is how I have it set up on mine with an e6k. I believe that is looking at the back of the plug, will have to check the car tomorrow to verify.

 

Ludwig, i already have the gm units.

antman, im not using the screw in type.

 

So you have this kind?


its pretty obvious if how to wire it up if you look at the wiring diagram

 

it should seem that way, but there are two different kinds of IAC that use that connector.

My question is why is it ABCD? does it correlate to something specific? Or do they correlate to the ones that haltech sells?