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  1. #1

    Default No power after transmission fluid change... help

    2004 suburban, 5.3, 4wd:

    I just dropped the pan, changed the filter and fluid in the transmission...pumped out from the cooler lines up front. The truck now has little power in Drive, as if it is starting in too high a gear (from a standing start).

    It gave me an engine code # P0758.

    Any thoughts what may be out of whack??? Fluid level is good. (Mercon IV)

    Thanks,

    David

  2. #2

    Default

    Sounds like a solenoid got damaged when you installed the pan. Easy to do. Another thought is the wrong filter which can smash a solenoid. Any other codes?
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  3. #3

    Default Thanks...

    Jim,

    You are wise... In the process of installing the pan, I disconnected (slightly) one of the wiring connectors on the solenoids at the rear of the pan. No damage... just a pain.

    Thanks,

    David

  4. #4

    Default

    Quote Originally Posted by dgajr View Post
    Jim,

    You are wise... In the process of installing the pan, I disconnected (slightly) one of the wiring connectors on the solenoids at the rear of the pan. No damage... just a pain.

    Thanks,

    David
    Glad you got it working again.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

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