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  1. #1

    Default 2002 1500-Blower motor won't shutoff

    My 2002 Sierra 1500 blower motor won't shutoff even after turning off truck and removing keys. I had to pull the fuse under the hood to get it to turn off. Before this issue, I only had middle and high settings for the blower switch working. Could these issues be related. What is causing the blower to stay on?

  2. #2


    The orange wire going to your blower resistor/relay is hot all of the time. Your relay is the most likely cause, probably stuck in the 'on' position.

    The resistor/relay assembly is located near the blower motor. Also check the connector that plugs into the resistor, these are prone to burning.

    You can get the harness at a decent FLAPS or here:

    Make sure you get the right resistor, the one listed for my '06 Sierra was not correct and the guy had to go through the boxes to find the right one.

  3. #3
    Legend unplugged's Avatar
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    Sep 2006
    High Deserts of SoCal


    The connector to the relay can get hot and cause a short there too.
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