Question about 1997 Pontiac Bonneville

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The heat in my Bonneville works when it wants too. SOMETIMES I can hit a bump, and the blower motor will kick on. The whole heating controls are digital, so i cant jimmy rig it. The 90 degree digital number FLASHES. I think thats a code that the actual box is fried? HELP!!! I need heat for the winter!!!

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I have the same problem and cannot find an answer anywhere. Have you had any luck yet?

Posted on Nov 14, 2010

  • schmitty57 Dec 07, 2010

    could be your blend door actuator module has a bad gear...and it can possibly jump into position when you hit a bump

  • schmitty57 Dec 07, 2010

    could be your blend door actuator has a bad gear, that may activate upon a sudden jolt

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