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Car Forum / Chevrolet / Chevrolet Trucks / November 2007

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03 Trailblazer high fan becoming intermittent.

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Meat Plow - 11 Nov 2007 18:21 GMT
Works most of the time. Has a mind of its own too.
No pattern of twisting the knob back and forth makes it
work when it's acting up, it just does when it decides to.
The other three positions are ok. Anything I should check
besides the switch?
ScottM - 11 Nov 2007 19:52 GMT
> Works most of the time. Has a mind of its own too.
> No pattern of twisting the knob back and forth makes it
> work when it's acting up, it just does when it decides to.
> The other three positions are ok. Anything I should check
> besides the switch?

Look for a "blower relay", it only comes on at high blower speed.
Topp@Work - 14 Nov 2007 18:05 GMT
> Works most of the time. Has a mind of its own too.
> No pattern of twisting the knob back and forth makes it
> work when it's acting up, it just does when it decides to.
> The other three positions are ok. Anything I should check
> besides the switch?

Hit the trailblazer forums.
http://www.trailvoy.com
 
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