2003 Tahoe AC control module(replace bulbs)

[LOWHOE775]

So I needed to replace the bulbs in my ac module and I took pics of how to take it apart for anyone who needs help.
1. Start by taking of the dash panel(pops of no screws and make sure you put it in 1st gear with engine off, easier to take of.)
2. Take of the module removing the two screws on the sides I used a 9/32 socket.
3. On the left and right are tabs that you squeeze and at the same time pull on. Should come out
4. Disconnect the two harness by squeezing the tabs.
5. I Recommend you sit at a table to disassemble the module.
6. Remove the two knobs by pulling on them slowly (don't pry might damage them.)
7. Turn the module over so the back is facing you and remove the four screws. Socket size is 3/16
8. Now separate the top (front) from the bottom.
9. Top left corner and bottom right corner have tabs that will release the circuit board. CAREFUL WIRE HARNESS IS ATTACHED
I didn't remove the harness it has plenty of wire to be moved around.
10. On the back of the circuit board you will see the solder points of the bulbs, just heat the point from the back and slowly pull on the old bulb to get it out.
11. I used the led bulbs to replace my stock ones T1 bulb wide angle with resistors (560ohms x 1.5 watt)
12. When soldering new bulbs on the left point is the POSITIVE and the right is the NEGATIVE. New bulbs will have one wire longer than the other, the longest being the positive.
12. After soldering all burnt out bulbs take to your Vehicle and test before assembly.
13. Assemble in reverse order and should be good to go hope this helps out good luck

 

[LOWHOE775]

Use a fine tip soldering iron makes it easier.
Final product done. My fan button did not light up. This was a problem with the circuit board in the location of where the bulb was o well

 

[ScottyBoy]

Great job. That's exactly how I do them. And on that fan button bulb, just run two tiny pieces of wire to it to the next closest working bulb and solder that wire as a jumper to get power to the LED beneath the fan button. I know you will also have to file or notch the plastic around that fan button so it won't pinch the wire when you reassemble the panel together.

 

[NathanJax]

made it a sticky

 

[LOWHOE775]

Great job. That's exactly how I do them. And on that fan button bulb, just run two tiny pieces of wire to it to the next closest working bulb and solder that wire as a jumper to get power to the LED beneath the fan button. I know you will also have to file or notch the plastic around that fan button so it won't pinch the wire when you reassemble the panel together.

Thanks a lot I didn't want to start with anything big yet, so I experimented with this and came out great. Thanks for the suggestion I will definitely do that. It does not look good without the fan button.

---------- Post added at 08:30 PM ---------- Previous post was at 08:27 PM ----------

made it a sticky

Thanks

 

[4birdman]

Where did you get the bulbs at? Did they come with the resistors pre-soldered or did you do that? Trying to find some warm white ones so they match the factory gauge lights.

 

[LOWHOE775]

Where did you get the bulbs at? Did they come with the resistors pre-soldered or did you do that? Trying to find some warm white ones so they match the factory gauge lights.

I actually got the resistors separate and I soldered them together. Got bulbs on eBay look up T1 bulb. Think you will find an LED white I couldn't find the warm white ones.

 

[mattt]

My 04 has the manual, dual temp sliders and the pass. side slider back light is out. Is the bulb replacement similar or the same for the manual slider AC/Heater controls?

 

[treehan77]

Are the OEM bulbs inside this AC unit the SAME OEM bulbs from the steering wheel control buttons? I ask because there are no radio shacks near me, can't order the parts online from radio shock (out of stock) and i have an extra steering wheel control buttonthat has working bulbs, and two bulbs are out on my AC unit. Can i just swap those in? thanks...

 

[treehan77]

I alternatively would like to know how many bulbs are involved in the digital auto climate control LED replacement, and if they are all the same size. can i use 5mm blue ones like these for all of them?
https://www.oznium.com/led-diffused-lens

 

[Jimmy John]

Anyone have an update on this thread. Most of my lights are out and would like to know exactly what to buy my control is like the one at the start of this thread.

 

[Archer04]

I used 5mm led blue with a 470 ohm resistor, I will enclose a pic so you can see how it turned out.

 

[K1ms]

I found this site where you can find all the bulbs you need. Direct fit, regular ones and LED. They are a bit pricey tough.

Silverado Sierra And Suv’s 2003 to 2007 – Car Radio Bulbs.com

carradiobulbs.com

 

[02Z71Raven]

I found this site where you can find all the bulbs you need. Direct fit, regular ones and LED. They are a bit pricey tough.

Silverado Sierra And Suv’s 2003 to 2007 – Car Radio Bulbs.com

carradiobulbs.com

I ordered them on Amazon. Most of the bulbs are 12v, so you'll want to find 12v LEDs to replace the 12v bulbs. You can be specific to 3mm or 5mm , but in most cases it doesn't matter, I used 3mm for all of them. The problem you'll find is when you run into a bulb that is actually an led. Those were only provided 2v or so. They do this by using an inline resistor on the circuit board. I backtracked the trace from one leg of the led to find the resistor, removed it and replaced it with a wire jumper. Now you can use a 12v led and will have a full 12v source. You could also replace with a regular led, but I bought a pack of 50 12v LED's so I didn't want to buy more.
You'll want to take the panels apart and then plug them back into the truck, turn the truck on and use a meter to identify the positive terminal of the bulbs before you install the new LEDs. Make sure you know what the positive terminal of your led is so you don't have to pull them and flip them afterwards.
I've done all the gauges on the dash as well as the doors switch panels, so if you have any questions just message me.

 

[TJ2004YUKON]

Super write up what about dashboard leds