TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

2006 TB with blower motor issue

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Old November 22nd, 2015, 2:27 PM
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Default 2006 TB with blower motor issue

I recently lost the number 5 fan speed on my 06 TB.......I have now tried 3 or 4 brand new resistors and a new resistor harness and still do not have the number 5 fan speed........1-4 work just fine! I tried both new OEM and aftermarket resistors. I would think that the fuse is fine since the other speeds work too....... Anyone else run into this before? Any input would be appreciated!
Old November 22nd, 2015, 3:44 PM
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Since you changed the harness and the resistor, I would think the next step would be the switch.
Old November 22nd, 2015, 4:29 PM
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Where is that switch located......I'm not exactly sure.....
Old November 22nd, 2015, 5:48 PM
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Apparently the blower is controlled by 2 fuses......1 controls the high speed and 1 controls the other 4 speeds. The one that controls the high speed was blown.......changed it and problem solved!




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