Climate Control Light Bulb Fix - How To - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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  #1  
Old 12-31-2009, 08:27 PM
Hondo88 Hondo88 is offline
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2003 Chevy TrailBlazer LT
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Climate Control Light Bulb Fix - How To

I couldn't find a good how-to for fixing the climate control light, so I took some pic's when I replaced mine.

Here's how I did it:

Remove the climate control module from the car. See other threads here on how to remove the dash.
Remove the 2 screws on the white tabs that hold the unit in the dash. <Image Below>

Remove the 2 electrical connectors from the back of the unit (1 Blue, 1 Black)

Remove the 2 round control knobs and the 2 slider knobs. <Image Below>


Remove the 4 small black screws from the back corners of the unit. <Image Below>
IIRC this is an SAE size nut.
Do not touch the screws on the black connector.


Pull the front (black) 1/2 of the housing from the back (white) 1/2 of the housing.
Once the black front is off you will see the circuit board. <Image Below>
You will see the light bubs to the right and left of the slider. <Red Arrow>
Press the white retaining clips to release the circuit board.


Flip the circuit board over and find the (2) terminals for the Bulb <Image Below>

I used Chem-wik to remove the solder from the terminals.
Once the terminal is de-soldered, remove the burnt out bulb.

Here is the replace bulb package from Radio Shack <Image Below>
Part # 272-1154


Install the bulb in the circuit board and resolder.
Put climate control unit back together and re-install.
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  #2  
Old 12-31-2009, 10:50 PM
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rudiger rudiger is offline
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what is the part number of the LED you bought from Radio Shack? I have one side of my temp control out, similar to yours.

thanks for the info
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Old 01-01-2010, 09:24 AM
Hondo88 Hondo88 is offline
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Part # 272-1154
It's just a bulb, not an LED.
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Old 01-01-2010, 02:45 PM
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SilverUnicorn SilverUnicorn is offline
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Great write up!

Chris
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Old 01-01-2010, 08:44 PM
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my volt meter in the gauge cluster in blown would this be the same process?
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Old 01-06-2010, 11:12 PM
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UntuchablLS UntuchablLS is offline
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...NICE ! *thumbsup*

Nice write up bro !

I have to do the same with mine...
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Old 01-07-2010, 01:10 AM
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EwingJK EwingJK is offline
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Quote:
Originally Posted by Hondo88 View Post
I couldn't find a good how-to for fixing the climate control light, so I took some pic's when I replaced mine.

Here's how I did it:
Perfect timing! I have to replace the stepper motors in the Instrument Cluster and I am going to fix my climate control light at the same time. I'm ordering the stepper motors and bulbs from eBay today. Thanks for the great writeup.
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Old 02-06-2010, 11:35 PM
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nar-165 nar-165 is offline
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Thanks

Thanks for the write up. I have the same problem. I was going to ignore it but now I won't have to.
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  #9  
Old 02-07-2010, 01:51 AM
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EwingJK EwingJK is offline
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Long story short, I destroyed two A/C controllers trying to take the Sliding Control Knobs off (Item 4 in the drawing). Three of four rheostat sliders disintegrated. Now I'm buying a new controller from the dealership because the salvage yard doesn't have any more available. Good luck with yours.
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  #10  
Old 02-07-2010, 10:43 AM
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rudiger rudiger is offline
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is there any tricks or tips in getting the knobs or slide bar levers off without breaking them? I want to replace my bulbs, but the knobs don't feel like they want to come off!

Any advise?
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