Originally Posted by
Fast355
My 97 Express has a DBC 383 running a Blue/Green. Only certain part numbers and hardware numbers have IAC drivers. For other projects, I looked at probably 50-75 Blue/Greens in the junkyard recently and found 4 with IAC drivers. A couple in DBC 2003 Tahoes and a couple in DBC Express vans. I bought all 4 for $25 each. When I got the PCM in the van a few years ago I only found 2. LT1Swap wiring page has the information on which part numbers support IAC. You need a DBC base file to support DBC. The base file in my Express van is a 2005 Mexican 1-ton truck L31 GMT800 file.
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