2003 Chevrolet TrailBlazer
Problem for Chevrolet 2003 TrailBlazer

Heater blower wont turn down or off




By getstanley20 on Oct 27, 2009

" "
heater blower wont turn down or off drained the battery removed fuse it shut off

Solution #1

posted on Oct 27, 2009
Not Rated)

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Rank: Guru  Chevrolet Cars  Expert
Rating: 92%, 170 votes
There is a resistor for the blower that has a relay built into it that sticks in the run position on high. The resistor is usually bad and sometimes the connector is also burned. The resistor is on the passenger side under the dash near the blower.
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