Windshield Defroster


gwbartlett

GT Owner
Mark II Lifetime
Feb 22, 2006
111
Indiana
The windshield defroster air direction on my 2005 GT is not working. The other air directions, A/C, and heat work as expected. Any thoughts appreciated. 40,000 miles
 

Specracer

GT Owner
Mark IV Lifetime
Nov 28, 2005
7,202
MA
Blend door, common issue. If I recall dash has to come out. Im sure others will chime in w more detail.
 

HighHP

GT Owner
Jun 3, 2019
489
Spokane, WA
In general, I have had this happen on other cars. When driving, I keep switching to defrost, let it sit for 15 seconds then switch to another setting. Keep doing this, they eventually free-up.

On my GT, I just make sure I go thru all the settings each time I drive it.
 

twobjshelbys

GT Owner
Jul 26, 2010
6,277
Las Vegas, NV
In general, I have had this happen on other cars. When driving, I keep switching to defrost, let it sit for 15 seconds then switch to another setting. Keep doing this, they eventually free-up.

On my GT, I just make sure I go thru all the settings each time I drive it.
Except on ram1500 trucks. some guy makes ones with aluminum shafts. On the truck entire dash and air box have to come out
 

Nafod

GT Owner
Mark IV Lifetime
Per The GT Guy, leave the temp control knob in the hot position when the system is not in use. this positions the blend door with the foam seal away for the cold position. when resting in the cold position over time, the foam will break down and adhere to the ducting and not move. Never seen the system apart or dash removed to see this in person. But this is what I do to hopefully prevent a failure and the person the info came from..
YMMV.
 

Tomcat

GT Owner
Per The GT Guy, leave the temp control knob in the hot position when the system is not in use. this positions the blend door with the foam seal away for the cold position.
Too late for me but darn good advise...like allowing the odometer to register before hitting the start button and popping the rear shell on shut down (to vent heat).
 
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