I have a 2004 chevy colodro Z71 2 whell drive 5 cylinder check engine light comes on code says IAC problem I changed the trottle body and code comes back the same still surges up and down going down t

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Asked by asking Sep 15, 2012 at 07:04 PM about the 2004 Chevrolet Colorado 4 Dr Z71 Extended Cab SB

Question type: Maintenance & Repair

1 Answer

John Saffrahn
20,235

That's the idle air control. And I'm very curious to know how you got a four wheel drive Z71 suspension package on a 2 wheeel drive truck.

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