Question about 1998 Chevrolet Blazer

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No heat after replacing battery

I recently replaced the battery in my 1998 Blazer and the next day, I don't have any heat. I was told to remove the RDO fuse and put back in..I did that. Hot air blowed out for a few seconds, but then went cold again. What do I need to reset?

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  • yadayada
    yadayada May 11, 2010

    You really need a factory service manual for this one, we have no resources here for this kind of issue, try a web search or a pay site.

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  • 55 Answers

Replacing the battery has no effect on the heating system. Do U have a temp gauge to know if the engine is getting up to temp? and then the heater should put out heat. If it doesn't then U should look at replacing the thermostat

Posted on Dec 15, 2008

  • mechelle207 Jan 29, 2011

    It's the blend door actuator. It's inside th glove box and should be a fairly easy fix or so I've been told.
    Here is some more info on it. http://www.blazerforum.com/forum/showthr...
    I'm having the same issue and am looking for a resolve and this is the closest I have come. GL

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