Offroad Trailblazers and Envoys

Interior fans

Breaker 1-9, anybody got a copy? Any discussion or mods relating to electrons and wires go here.

by Miltman » Mon Sep 17, 2018 7:49 am

Fan has a mind of it's own currently. Mechanic says it some sensor in the dash. Also 400.00 fix. Anyone have idea of where this bad boy is located or if it's in the dash at all.
Miltman
Cruiser
 
Posts: 23
Joined: Fri Aug 21, 2015 10:51 am
Name: Tim
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Miltman » Tue Sep 18, 2018 7:47 am

Let me explain more. Interior fan sometimes works. Keep in auto mode. Doesn't work in manual either. Was going to replace the control panel but my mechanic says there some kind of sensor in the dash. Guessing there could be a temp control sensor. But does anyone have any idea where it could be.
Miltman
Cruiser
 
Posts: 23
Joined: Fri Aug 21, 2015 10:51 am
Name: Tim
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Flyingfischer5 » Tue Sep 18, 2018 6:40 pm

If no one chimes in give GMTNation.com a look as well. Your answer may await over there. There is a bigger member base over there and alot more trouble shooting and answers that don't have much to do with a lifted GMT.

I have manual controls so I'm not much help. I had to replace my fan relay which is a common problem for the manual HVAC.
User avatar
Flyingfischer5
Off-Roader
 
Posts: 129
Joined: Sun Feb 21, 2010 9:43 pm
Location: Spokane, WA
Name: Craig
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Miltman » Wed Sep 19, 2018 6:26 am

Would the relay cause to only work when and if it chooses to. Also will check on GMT
Miltman
Cruiser
 
Posts: 23
Joined: Fri Aug 21, 2015 10:51 am
Name: Tim
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Flyingfischer5 » Wed Sep 19, 2018 2:17 pm

No for the manual controls the relay causes certain fan speeds to not work. For me 1-4 didn't work but 5 did. It doesn't make the operation sporadic.
User avatar
Flyingfischer5
Off-Roader
 
Posts: 129
Joined: Sun Feb 21, 2010 9:43 pm
Location: Spokane, WA
Name: Craig
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Miltman » Wed Sep 19, 2018 7:12 pm

Was the blower motor resistor. GMTNation was a help. Thanks for the information. Easy fix once I got my hand on right resistor
Miltman
Cruiser
 
Posts: 23
Joined: Fri Aug 21, 2015 10:51 am
Name: Tim
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD

by Flyingfischer5 » Wed Sep 19, 2018 7:50 pm

Resistor... Thats right. I said relay, meant resistor. Either way glad you found the solution!
User avatar
Flyingfischer5
Off-Roader
 
Posts: 129
Joined: Sun Feb 21, 2010 9:43 pm
Location: Spokane, WA
Name: Craig
Vehicle Year: 2004
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD


Return to Electrical / Radios