2002 Chevy Trailblazer Problems with heater controls

Tiny
NTPRESTON
  • MEMBER
  • 2002 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 75,136 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.
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Wednesday, February 17th, 2010 AT 10:26 AM

2 Replies

Tiny
HMAC300
  • EXPERT
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.
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Friday, October 19th, 2018 AT 5:12 PM
Tiny
PAULIES7576
  • MEMBER
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)
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Friday, October 19th, 2018 AT 5:12 PM

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