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    Allison 5 speed no engagement. Input shaft?

    If the C3 clutch assembly is spinning when the drive shaft is turning then there shouldn't be anything broken there back. However if the input shaft was broken (depending on location of the brake) the pump would not be spinning, is my logic behind what i posted earlier. when doing a line...
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    Allison 5 speed no engagement. Input shaft?

    If the transmission light on your cluster display illuminates then goes out once the truck is started then there will be no stored diagnostic codes. However if the light was to remain after engine is started then a stored DTC would be indication of a error, or the TCM is malfunctioning...
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    ANOTHER blower motor Question

    Thanks LBZ, ill give the dealer a call tomorrow and ask them about any recalls. Tonight I removed my temperature controller and checked the connections, all seems well. One thing I did notice though is that the fan will cycle through any and all speeds when the key is in the on position (engine...
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    ANOTHER blower motor Question

    Hi everyone! First post... I am also having this problem with my 2003 sierra, today I changed the PWM module as well. The fan came on, and worked fine until the next time I started the truck (about 5 min. later). I have reason to believe the fan is still in good working condition, as well as...