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06-02-2011, 02:46 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Need help on HVAC schematics
2003
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06-02-2011, 02:48 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Need help on HVAC schematics
tbh wouldn't it be possible to just manually move the door and disconnect the power, would there be any drawbacks from leaving it open permately, such as with the defrost on?
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06-02-2011, 02:49 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Need help on HVAC schematics
Rechecked for bulletins for an 03, none found other than the one mentioned above
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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06-02-2011, 02:52 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Need help on HVAC schematics
If you get close enough to the actuator to disconnect it its easy to replace from there. Do you mean close it so its always on recirc mode?
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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06-02-2011, 02:53 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Need help on HVAC schematics
Question the Tech 2 computer that they will hook to my truck.. will it download ALL updates, or just the specific one I'm having trouble with?
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06-02-2011, 02:54 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Need help on HVAC schematics
Yea...
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06-02-2011, 02:54 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Need help on HVAC schematics
Can only flash one module at a time
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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06-02-2011, 02:56 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Need help on HVAC schematics
Never tried that, may set a code and default the hvac doors. Depending on what code may set you could get stuck on full hot, defrost. Not likely that would happen by unplugging the recirc/fresh actuator though
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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06-02-2011, 02:58 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Need help on HVAC schematics
Gotcha, I guess I'll take it up to my dealership then...
I appreciate the help... Hopefully it just needs the update
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06-02-2011, 03:01 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Need help on HVAC schematics
No problem, hope it works out for ya. If you were in Canada near me i would flash it for ya and only charge accordingly if it fixed the problem, unfortunatley not many gm techs will be willing to do that.
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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06-02-2011, 03:04 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Need help on HVAC schematics
Haha, For real.
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