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Engine Light Issue

This is a discussion on Engine Light Issue within the GM Trucks forums, part of the Vehicle Specific category; i have a 2007 silverado classic with 4.8l V8. the engine light is on and i put the reader on ...

  1. #1
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    Black
    2002 Camaro Z28

    Engine Light Issue

    i have a 2007 silverado classic with 4.8l V8. the engine light is on and i put the reader on it and it said the HVAC. i cleared it and it still comes back. what can i do to get rid of it or fix it?

  2. #2
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Got an exact code?

  3. #3
    Senior Member
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    Yeah post the code. Our cars will get P0530 for low or high pressure, but doesn't illiminate the MIL - maybe the newer vehicles are different.

  4. #4
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    2002 Camaro Z28

    ok ill get the codes up as soon as possible.

  5. #5
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    2002 Camaro Z28

    ok i got the codes.
    P0442 - EVAP Emission Control System Leak (small).
    P0449 - EVAP Emission Control System Vent Vlv/SoL Malf.

    i have no idea what this means, hope someone can tell me what to do to fix thias thanks.

  6. #6
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    On the cars EVAP codes can be something as easy as a loose or bad seal on the gas cap, but usually throw only P0440 or P0442. I'd post the codes in the PCM section, lots more traffic.

  7. #7
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    2002 Camaro Z28

    thank i'll try that

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