2002 Chevy Trailblazer Problems with heater controls

2002 CHEVROLET TRAILBLAZER
75,136 MILES • 6 CYL • 4WD • AUTOMATIC
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NTPRESTON
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  • 1 POST
I have 5 speed controls for my heat and 1-4 don't blow out any heat but 5 blows out heat and I'm wondering what is wrong with it.
Feb 17, 2010 at 10:26 AM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
it could be either your blower switch or the resistor. Yu need to check if the resistor is getting power in the lower speeds. YOu would need a test light and check eeach position as it will be low voltage and a dimmer light on each setting. it is by the blower motor and is a little square rectangular looking box. It's not very easy to change.
Oct 19, 2018 at 5:12 PM
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PAULIES7576
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[quote:d25e019921="NTPreston"]Heater problem
2002 Chevy Trailblazer 6 cyl Four Wheel Drive Automatic 75136 miles

I have 5 speed controls for my heat and 1-4 don't blow out any heat but 5 blows out heat and I'm wondering what is wrong with it.[/quote:d25e019921]



Hi, have you tried the advice that was given? If so what did it end up to being? My 02 trailblazer has the same problem, al;ong with many ohter problems GGRRRRR :o)
Oct 19, 2018 at 5:12 PM