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I have a modified C4 LT1 1995. My main question is I see two Part numbers for the IAC from auto zone and other sites that indicate they will be applicable for my year and engine. One is the 17113099 (from Autozone it is AC140) and the other is 17113188 (from Autozone AC139). Does any one know the difference? Will either of these work in my 95 LT1 ? Interestingly, the AC139 is $30 more then the AC140? thanks for any help.
I do find other sites that show the PN's for the IAC for the LT1 having the 96/95 together using 17113188 and then the 94/95 together as using the 17113099. so it was confusing and seemed to indicate two possible PNs for the 95 year. ???