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2009 GMC Savana 3500 Question: IDLE STAYS AT2500 AND WONT COME DOWN

 

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RWILL38, 4.8L V8, New Castle, PA, May 16, 2011, 10:14
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IDLE STAYS AT 2500 WONT COME DOWN

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  • Answer #1

    Superbob May 16, 2011, 11:29
     Master

    there is a problem with the engine control system or a big air leak into the intake system. I'd guess that the check engine light is on.
    The check engine light indicates that the computer has detected a malfunction in the engine/emission control system and has diagnostic codes and data stored which would be essential in diagnosing the problem.
    A technician with a scanner could access the diagnostic codes and data and then be able to give you a diagnosis.
    If you want to find a GM specialist, here's our directory link for you:
    https://repairpal.com/directory?address=16105&car_bra...

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