Question about 1996 Chevrolet Blazer

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My heater only works when iot wants to. What

My heater only works when iot wants to. What could be the cause?

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  • brenda_vaugh Feb 05, 2010

    It will just come on when ever it decides too. I can be going down a smooth road and it just come on all of a sudden. It will not stay on all the time and work like it is suppose to. I had some one tell me it could be something with the relay box, but they sere not sure. Thanks for your help


  • lindsay836
    lindsay836 May 11, 2010

    Have the same problem with my GM. Is it the blower, no heat ect. ? Give me more details



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I would look at the frame ground on the truck, make sure all the connections are good. You can spend hundreds of dollars on parts chasing this problem, I know I have.

Posted on Feb 05, 2010

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The control unit in the dash is a VERY common repair/fix for this vehicle. Go to a local wrecking yard and pick one up. Very cheap and very easy to do.

Posted on Feb 05, 2010


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