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Chevy TrailBlazer Climate Control Questions

78 messages,  Last post on Dec 02, 2009 at 7:50 PM

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What is this discussion about? Chevrolet TrailBlazer, Heating / Cooling, SUV

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#1 of 78 A/C wont go through dash vents by dwaynez28 Apr 14, 2007 (8:42 am)
Son jumped another car,using mom's 2003 Chevy Trailblazer, blew a 125 amp fuse under hood to fuse block, replaced fuse,everything appears to work except the A/C blows only to the floor and not out the main dash vents,have check fuses, swapped around other like relays. I know its probaly simple fixs, but i cant find it. Thanks. Replies to this message: jwoodie (Apr 24, 2007 10:13 pm) jworkman (Apr 26, 2007 6:43 pm)
#2 of 78 Re: A/C wont go through dash vents [dwaynez28] by jwoodie Apr 24, 2007 (10:13 pm)
Replying to: dwaynez28 (Apr 14, 2007 8:42 am) Could be internal breakdown in the blower control module, located beneath the right side of the instrument panel next to the blower motor. The part number for an updated blower motor control module is 93803636.
#3 of 78 Re: A/C wont go through dash vents [dwaynez28] by jworkman Apr 26, 2007 (6:43 pm)
Replying to: dwaynez28 (Apr 14, 2007 8:42 am) could also be a mode actuator...small motor that opens and closes flaps in the vent assembly to control where air goes
#4 of 78 Also having same issue by tursiopstech May 12, 2007 (9:53 am)
Can get defrost and floor vents, but cannot get dash vents on a 2002 Trailblazer. Leaning toward the Mode Actuator, but not sure. Just adding another observed case tot he list.   - TursiopsTech
#5 of 78 Actuator problem by dwaynez28 May 12, 2007 (1:58 pm)
Hey guys,thanks for your help, in my case it turn out to be the actuator, wont let my son's friends jump off their car anymore. Dwayne Replies to this message: al55442 (Oct 11, 2007 9:07 am) garyfirst (Mar 07, 2006 12:56 pm) tomcincy (Apr 19, 2006 6:20 pm) and 6 more... ejurik (Sep 22, 2006 6:59 am) nremtp415 (Jul 06, 2009 4:46 pm)
#6 of 78 Climate Control Problem by bqueb Jun 26, 2007 (8:15 am)
I have never had any problems with my 2002 Trailblazer LTZ until now. All of a sudden, the External Temperature reading fluctuates. It usually starts and stays on 50 degrees, and then sometimes eventually gets up to correct temp, then may go back to 50, and so on. This morning, it started off correctly, then all of a sudden, went to 17 degrees, which caused the heater to turn on, since thermostat set to 72.   Has anyone else had this problem, and what did you find out, and how much did it cost to correct? Replies to this message: jeremymassey (Jul 25, 2007 6:15 pm) nedt (Aug 16, 2007 12:07 pm) wardd (Aug 16, 2007 6:15 pm) nedt (Sep 18, 2007 11:09 am) and 2 more... pa2tx2md (Jun 23, 2008 6:24 am) burdawg (Jun 23, 2008 6:33 pm)
#7 of 78 Re: Climate Control Problem [bqueb] by jeremymassey Jul 25, 2007 (6:15 pm)
Replying to: bqueb (Jun 26, 2007 8:15 am) My 2002 Trailblazer is doing the same thing, does any one know what is going on? Please help.
#8 of 78 Re: Climate Control Problem [bqueb] by nedt Aug 16, 2007 (12:07 pm)
Replying to: bqueb (Jun 26, 2007 8:15 am) I am having the exact same problem withe the climate control-- Any answers ? Replies to this message: wardd (Aug 16, 2007 6:15 pm) nedt (Sep 18, 2007 11:09 am) burdawg (Sep 18, 2007 6:41 pm) shutterb (Jun 07, 2008 8:53 am)
#9 of 78 Re: Climate Control Problem [nedt] by wardd Aug 16, 2007 (6:15 pm)
Replying to: nedt (Aug 16, 2007 12:07 pm) Same problem. Mine goes down to -66 degrees F when it's 100 degrees outside. If anyone gets a lead on this please let me know. Replies to this message: nedt (Sep 18, 2007 11:09 am) burdawg (Sep 18, 2007 6:41 pm) shutterb (Jun 07, 2008 8:53 am)
#10 of 78 Re: Climate Control Problem [wardd] by nedt Sep 18, 2007 (11:09 am)
Replying to: wardd (Aug 16, 2007 6:15 pm) Replaced ambient outside temperature sensor-- seemed to do the trick--Part was about $20 Replies to this message: burdawg (Sep 18, 2007 6:41 pm) shutterb (Jun 07, 2008 8:53 am)

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