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Weird Electrical Problems?

hrlydvidsnhrlydvidsn Member Posts: 1
edited August 2015 in Pontiac
Okay here's the problem. Was driving my Montana and the HVAC then power windows and the wipers all quit at the same time. Everything else works .Help


  • leakmaster1leakmaster1 Member Posts: 8
    Check the fuse
  • imidazol97imidazol97 Member Posts: 26,927
    I recommend studying the power supply distribution for these 3 items if they all quit at once.

    Electrical diagrams can be found at or under repair at

    Autozone requires signing up for free login with an account. just wants a signin
    for each time you use it.

    My first guess would be the ignition switch where different leads provide switched power
    outputs that may be shared by various parts of the car. The windows run in RUN or ACC.
    The wipers run in RUN or ACC (I believe I'm right on that.)Power windows run in ACC
    or Run. So there may be something common to them there. Burned contact inside switch.
    OR burned contact in wiring in the multi-plug that plugs into the switch.

    Curious, does the HVAC blower work on HIGH speed?

    2014 Malibu 2LT, 2015 Cruze 2LT,

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