Question about 2004 Chevrolet TrailBlazer

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Replaced resister pack, but still only have high on 2004 trailblazer

Replaced resister pack, but still only have high setting for the blower fan on a 2004 trailblazer

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  • Chevrolet Master
  • 1,311 Answers

Check fuse #44 in rear fuse panel. Also did you inspect the connector that the resistor module attaches to? Sometimes the contacts or wires get burnt.

Posted on Dec 15, 2012

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Posted on Jan 02, 2017

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countrysi248
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SOURCE: HOW DO I FIX THE AC/HEATER BLOWER FAN ON MY 2004

Your switch acts as a reastat which adjusts your speeds your switch is going bad so you only have the two speeds left on that reastat.. thanks Jerry

Posted on Apr 22, 2009

  • 176 Answers

SOURCE: Blower on my 2004 Chev Colorado only works on high setting #4.

You need a resistor pack, which is likely located in the air box, near the blower motor.

Posted on Jun 29, 2009

outdoorsman5
  • 631 Answers

SOURCE: The fan/blower only works on the high setting.

It probably is the fan switch itself. They are around $30. for a new one. You can take it out and check to see if you have power to all the settings with a ohm meter or test light. They are not real hard to take out.

Posted on Jul 28, 2009

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Blower on my 2004 dodge ram will not work on high. I have replaced the resister twice and the switch as well. When I had the fan hooked up to 12 volts at the parts store it seemed to work fine. Any...


Inspect the connector at the resistor, seen many melt due to faulty resister, if u have replaced resister u may have fix half the problem already, try wiggling the connector when the fan is on high.

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Hvac fan only works on the 2 high speeds 4 & 5?


The resistor pack for the blower motor needs to be replaced. It is located behind the glovebox.

Aug 02, 2010 | 2004 Chevrolet TrailBlazer

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2004 trailbrazer heater blower only works on high setting


Your blower resister is bad. Remove it and check to see if it any burned spots. If you resister is bad either A, your pulling to many amps, or B your blower motor is bad also.
You should be able to check your blower motor by hooking red, 12 volt hot tp connector, and black to frame ground.

Feb 01, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

Blower on my 2004 Chev Colorado only works on high setting #4.


You need a resistor pack, which is likely located in the air box, near the blower motor.

Jun 29, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

BLOWER RESISTOR BAD FAN ONLY RUNS @ HIGH SPEED


Chevrolet 2004 TrailBlazer

Look next to the blower. You can remove the panel under the passenger side. Go through the glove box and move it down out of the way to access the electrical connector. Then remove two bolts and the electrical connector.

Apr 21, 2009 | 2004 Chevrolet TrailBlazer

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most probable cause.. blower motor resister. & vaccuum leak to control blend doors or electrical actuator for blen door

Aug 02, 2008 | 2004 Chevrolet TrailBlazer

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