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2003 gmc envoy_sle
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Discussion Starter · #1 ·
Here's my problem. I have a 2003 Envoy with manual duel zone climate control and when I have my Air Conditioner on and want to recirculate the air, so the interior will cool off faster, the recirculation valve does not open. The light on the button illuminates but nothing happens. I have the problem narrowed down to either the A/C control panel or the recirculation actuator. So I figured I would go with the cheapest part first even though it is the hardest to change. My question is, am I on the right track and where is the actuator located? I think it's on the passenger side above the A/C fan but I'm not sure. Any assistance will be greatly appreciated. Thanks
 

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2002 olds bravada
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have you tried pulling out the HVAC fuses for a couple minutes and letting the actuators reset?
 

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2003 gmc envoy_sle
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Discussion Starter · #3 ·
Yep, that was it.:woot: After futher research, I found out this allows the controller to recalibrate. Just a side note; after pulling and reinstalling these fuses start the truck and leave the A/C off for at least one minute to allow the controller to recalibrate. If you turn the A/C on too earlier it will not function properly. Thanks for the tip.
 

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2002 gmc envoy_slt
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Hello Wardak,

Which on of the below three fuses to pull out exactly?

36 HVAC B
39 HVAC 1
44 HVAC

Whenever I press the recirculation button the orange led goes ON, but nothing happens after that: no clicking sound, no increase in fan speed, and worse the black smelly smoke comes out from diesel trucks gets inside the car :( .. eeww ...::no::hopeless
 

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2004 gmc
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Which on of the below three fuses to pull out exactly?

36 HVAC B
39 HVAC 1
44 HVAC
There's no harm in pulling all three at the same time. But the one going to the control module that's most likely to work if this is your problem - is HVAC-B, fuse 36. Hate to say it's been posted in many other threads about this sort of problem. Have you found the master thread about changing actuators?

http://forums.trailvoy.com/showthread.php?t=40235
Whenever I press the recirculation button the orange led goes ON, but nothing happens after that: no clicking sound, no increase in fan speed, and worse the black smelly smoke comes out from diesel trucks gets inside the car :( .. eeww ...::no::hopeless
If the reset doesn't work, then you have a problem with your recirculate actuator. If you own a meter and are a DIY mechanic, you can avoid a trip to a specialist. But the recirculate actuator is the toughest to get to, and we don't know your skills.

 

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2002 gmc envoy_slt
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Many thanks Roadie .... I'll give it a final shot on fuse 36 :thumbsup:

I only hope I won't need to go through the messy experiment :worried:
 

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2002 gmc envoy_slt
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Do it myself or not?

Hello Roadie,
How much time would it require to reach the recirculation actuator?

I've already gone through many topics, specially the thread # 40235, however honestly I'm not sure how much effort do I need:confused:, also what kind of tool kits will it require.

Thanks a lot :thumbsup:!


There's no harm in pulling all three at the same time. But the one going to the control module that's most likely to work if this is your problem - is HVAC-B, fuse 36. Hate to say it's been posted in many other threads about this sort of problem. Have you found the master thread about changing actuators?

http://forums.trailvoy.com/showthread.php?t=40235
If the reset doesn't work, then you have a problem with your recirculate actuator. If you own a meter and are a DIY mechanic, you can avoid a trip to a specialist. But the recirculate actuator is the toughest to get to, and we don't know your skills.

 

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2004 gmc
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I took my dash down to this level to add a passenger side offroad grab handle, and it took about 4 hours (and 3 hours to reassemble), but I didn't need to change the actuator while I was in there. You might be able to do it with a lot less disassembly, but I really don't have personal experience.

 

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2002 chevy trailblazer_ltz
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got a/c actuator to reset But no Fan

Hi
followed the advice after my actuator started to make noise and only certain a/v vents were working. Pulled all three fuses let them reset before turning on A/C . Actuator now works but a/c fan only works on supper low speed. Need help ?
 

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2002 chevy trailblazer_ltz
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Fan motor not working

Some how the fan decided to give up the ghost the same time I tried to reset the Actuators. But a new fan in and every thing works great.
 

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2006 chevy trailblazer_ls
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Need advice please.

I was rear ended at a red light by someone going 35 mph. The impact made my automatic door locks not work for the whole vehicle. The dealership (insurance company's repair shop) fixed the problem saying they had to replace some fuses. Since that time, my AC recirculate system no longer works. They checked it out and said I need a new recirculate actuator and that this is a common problem for Chevy's. The insurance company insists that it wasn't part of the accident and because the vehicle has 77K miles on it, they won't pay the $800 to fix it.

I'm upset because it was working just fine prior to the accident and suddenly, after they do work on my vehicle, it goes out? Very skeptical! I was reading different stories on line and one of them said it could possibly be a fuse and the system can be reset. My questions: Could the mechanics have hit a fuse while changing door lock fuses on the vehicle having caused the problem? How hard is it to reset the system?

Also, they replaced the muffler and since they did, the vehicle is idling at a lower rate and the car is shaking for the first 15 minutes of being driven after sitting for a long period. I have to put it in Neutral whenever I come to a stop as the car shakes pretty hard. After awhile, it nearly stops shaking.

The dealership (insurance repair place) said I need a new motor mount and 2 transmission mounts because they're worn and not part of the accident because they can't see any visible cracks or tears etc. I have been told by other mechanics that the odds of 3 mounts wearing out on the vehicle at the same time are slim to nil.

I feel like I'm getting the run around and don't know which way to turn. They're telling me that basically I don't have a leg to stand on and the things wrong are because the vehicle is getting older and not from the accident.

All I keep saying is that the car was in great running order prior to the accident. It's only 5 years old and I travel 8 miles one way to work. I've put on new brakes, tires, air filter, had the oil changed at regular intervals etc.

I just don't know what to do at this point. Any suggestions would be greatly appreciated!!!
 

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When was the last time you cleaned the throttle body? If they unhooked the battery then it resets the computer. The computer doesn't know how to deal with the dirty throttle body and causes the issues you are describing.

That could also be the cause of your actuator problems. When you unhook the battery you always run the risk of the actuators not working afterwards due to the way GM designed them. I would do the fuse pull as described and see if that fixes the issue.
 

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2006 chevy trailblazer_ls
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I was reading different stories on line and one of them said it could possibly be a fuse and the system can be reset. My questions: Could the mechanics have hit a fuse while changing door lock fuses on the vehicle having caused the problem? How hard is it to reset the system?
Yes: if they pulled the HVAC fuses discussed earlier in this thread the system may not have recalibrated correctly. I would try the reset yourself (described earlier). The other possibility is that the recal procedure itself broke the actuator. If the actuator is actually broken you're going to have a hard time convincing them to cover it--there isn't really fault here, it's the nature of the beast.

The vibration may actually be motor mounts but I would do some more digging (I have a hard time believing it's related to a muffler replacement).
 

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2003 chevy trailblazer_lt
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How To reset actuator?

Hi I'm a novice but I'm trying to learn as much as I can, I believe a reset may be all i need but I'm not sure 100% on how to perform it and i do not want to go messing around. I have an 03 trailblazer I want to try and reset the air condition actuators but do i take the fuse out then start up or just take them out for a few mins? What is the correct process for resetting? Any help would be really appreciated.
 
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