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Thread: Fan's won't adjust when set lower/higher?

  1. #1
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
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    Jun 2004
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    Fan's won't adjust when set lower/higher?

    On some V6 vehicles fitted with HVAC systems the HVAC system controls the fans, in these cases simply set the Climate Control override to disabled so that the PCM controls the fans rather than the HVAC system.

    -Bill
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  2. #2
    Tuner in Training
    Join Date
    Aug 2010
    Posts
    40

    does the 2002 chevy malibu have that particular HVAC fan control system

    I have a 2002 chevy malibu and my fans don't seem to kick on at the right time. I've also got a list of body codes that the hp tuner scanner pulls:

    [Unknown] B2575 - (SES)
    [Unknown] B2585 - (SES)
    [Unknown] B2577 - (SES)
    [Unknown] B2578 - (SES)
    [Unknown] B2587 - (SES)
    [Unknown] B2588 - (SES)
    [Unknown] B2648 - (SES)
    [Unknown] B2600 - (SES)
    [Unknown] B2601 - (SES)
    [Unknown] B2602 - (SES)
    [Unknown] B2603 - (SES)
    [Unknown] B1001 - Option Configuration Error (SES)
    [Unknown] U1088 - Loss of Communications with SDM (History)
    [Convenience] B1327 - Device Power Circuit Low (History) (Immature)


    Continuous Tests
    Misfire: Complete
    Fuel System: Complete
    Comprehensive Component: Complete


    Once Per Trip Tests
    Catalyst: Incomplete
    Heated Catalyst: n/a
    Evaporative System: Incomplete
    Secondary Air System: n/a
    A/C System Refrigerant: n/a
    Oxygen Sensor: Incomplete
    Oxygen Sensor Heater: Incomplete
    EGR System: Incomplete