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.

Air problems in a 2003 TB

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Old October 14th, 2011, 7:47 AM
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Default Air problems in a 2003 TB

I have a 2003 TB LTZ. The problem I'm having is that no air will will come out no matter how high i turn the fan. Nothing happens. Heat or cool. Doesn't matter if where I have the setting either. on the floor, vents or defrost. Now the controls for the back seats work and air comes out of those. Now back a few months ago the external temp was stuck for a day. And ever since then it just hasn't worked right. I hope I explained it well. Has anyone had a problem like this? Thanks for any and all help.
Old October 14th, 2011, 11:49 AM
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Welcome to the forum. The HVAC air door actuators on yours are electric. There're three fuses labeled HVAC one thing or another in the rear fuse block. If any of them are blown, try replacing them. Of course, if the replacement fuse blows, you'll want to take it in and get it serviced.
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