I ve look on shoebox website to fond the iac part number and there was 2:

IAC 1994, 1995 (w/ KC4)
AC-Delco #217-429
GM p/n 17113099

IAC 1995(w/o KC4), 1996-1997
AC-Delco #217-433
GM p/n 17113188


Whats the meaning of KC4??

Mine is a 95/m6/no oil cooler.

Thanks

 

KC4 is the rpo code for oil cooler iirc

 

That is correct

 

It should be an easy choice, now.

 

Are they interchangeable? What effect would an oil cooler have on the IAC?

 

I have no idea.

 

Well now i know

With your site there is a lot of thing that are easier for lt1 owners

 

Last quick one,is there any difference between a oem gm unit and a Napa or autozone unit?

I know that in some case,oem parts are better but in this particular case???

Thanks

 

Hard to say with electrical parts. All of them die when they feel like it.