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Vent Door/Actuator HELP PLEASE

5 messages,  Last post on Jul 09, 2009 at 3:32 PM

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What is this discussion about? GMC Jimmy, SUV

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#1 of 5 Vent Door/Actuator HELP PLEASE by frekeyguy

Oct 26, 2007 (7:25 am)

Hello, first: thank you for everyone who posts on these forums, it helps me out a lot. Thank you.
 
Truck: '98 GMC JIMMY SLT 4x4-Climate control!!
__________________________________________________________________
 
QUESTION:
 
My truck only blows hot air = vent door problem. So I took it out, it was infact the nylon/plastic gear worn down. So I bought a new acuator/blend door unit.
 
I put it in yesterday, but it went back to the heat only (vent open) position. So I tried taking the battery cables out, for about 10mins, but still no luck.
 
I took out the battery cable last night, with the RDO/ACEE fuse (15AMP)...but it will still ONLY BLOW HOT AIR. (VENT OPEN).
 
When I manually move the plastic stick which controls the flap (to CLOSED), i get outside air, but when the flap is open its all hot air.
 
SO HOW DO I RESET THIS MODULE????

#2 of 5 Re: Vent Door/Actuator HELP PLEASE [frekeyguy] by frekeyguy

Oct 28, 2007 (5:45 am)

Replying to: frekeyguy (Oct 26, 2007 7:25 am)
I fixed it.....It was the blue gear, it has to be aligned properly.....it was in the wrong position.

#3 of 5 99 jimmy Vent Door/Actuator by dion165

Jun 28, 2009 (6:33 pm)

battery died. jumped the car with my battery pack. now my jimmy only blows hot air = vent door problem. i am not sure what is going on with it. it worked perfect before this. any suggestions. is the vent door actuator done?

#4 of 5 Re: Vent Door/Actuator HELP PLEASE [frekeyguy] by dion165

Jun 29, 2009 (2:39 am)

Replying to: frekeyguy (Oct 28, 2007 5:45 am)
where is the actuator located. i am having the same problem. please help

#5 of 5 Re: Vent Door/Actuator HELP PLEASE [dion165] by dion165

Jul 09, 2009 (3:32 pm)

Replying to: dion165 (Jun 29, 2009 2:39 am)
Found problem; The actuator gear was broken. The actuator is located left of the tweeter under the dash. It is possible to reach it without removing the dash. Part can be found for a reasonable price at rockauto.com. Good luck

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