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How to replace burned out dual zone heater bulb

Discussion in 'Chevy Trucks' started by Snowzilla, Oct 9, 2010.

  1. Snowzilla

    Snowzilla Senior Member
    from Iowa
    Messages: 397

    I have a '03 Silverado HD with a burned out bulb for one of the dual zone temp. climate controls. Anyone with experience or tips on how to replace & access these? Sound like they may be a soldered in bulb. :mad:
     
  2. Fatality

    Fatality Senior Member
    Messages: 226

    i want to know the same thing as well
     
  3. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    i think they are Diodes.. Not bulbs....
     
  4. Triple L

    Triple L PlowSite Fanatic
    from Canada
    Messages: 5,989

    in my 06 if you just smacked it pretty hard it worked evertime LOL....
     
  5. wolfmobile8

    wolfmobile8 Senior Member
    Messages: 726

    i have one out in my 02 and i took the dash a part and there are 3 bulbs in that control and one of mine is burnt out and i think you can only get the bulbs form a gm dealer.
     
  6. Snowzilla

    Snowzilla Senior Member
    from Iowa
    Messages: 397

  7. Snowzilla

    Snowzilla Senior Member
    from Iowa
    Messages: 397

    Did you notice if your bulbs pull out or were soldered in?
     
  8. 496 BB

    496 BB Senior Member
    Messages: 789

    hey are NOT just plug and play bulbs in the 03+ Chevy trucks. These are actually "7219" Eiko bulbs (also available through radio shack online). Radio Shack P/N is 272-1092. (for a two pack). How it works is you can take the front apart of the HVAC unit and get to the circuit board. BUT the back will not open up. Its molded together at the pins for the plug. SO you have to use the soldering gun to "poke" holes in the rear where each light is as they are soldered to the circuit boards. This way you can heat the back up and pull thru and re solder a new bulb in. Its not that hard if you are familiar with soldering and tinkering. The whole dash and light setups are like this on these trucks.

    On another note you may want to change them over to LED while its apart if you are feeling confident. I changed everything over in mine a few years back. Even the window switches and such are now blue LED. Its a bit more difficult but doable.

    Heres a pic.....

    [​IMG]

    [​IMG]
     
  9. Snowzilla

    Snowzilla Senior Member
    from Iowa
    Messages: 397

    Great feedback 496 BB. Sounds like a common problem. I will get some of your mentioned bulbs on hand before tearing into. The LED's look great too. I do notice how my window/lock buttons are barely legible at night.
     
  10. wolfmobile8

    wolfmobile8 Senior Member
    Messages: 726

    where did you get the led bulbs from
     
  11. wolfmobile8

    wolfmobile8 Senior Member
    Messages: 726

    i had the whole unit out and my bulbs just poped out but my truck doesn't have climate control and the 03 and up might be differn't then in my year truck.
     
  12. pohouse

    pohouse Senior Member
    Messages: 322

    x2. I have one that goes out. The sweet spot for me is just to the left of the passenger air bag key switch. Just a tap will do it every time. Go figure.
     
  13. 496 BB

    496 BB Senior Member
    Messages: 789

    In 01-02 the dash cluster lights are just 194 base bulbs. I got those from Ebay in a wide angle firing pattern. You will need to get the twist lock holders at local parts store if just ordering bulbs.

    The rest of everything is is component LED setup with resistors and 360* angle LEDs. I got those from Superbrightleds.com. I got resistors from Radio Shack. Just make sure when you figure the volts for the resistor to use 14.4V instead of 12V.

    I got a ton of pics and have done write ups if anyone is interested. Here is a write up I made awhile ago http://www.thedieselgarage.com/forums/showthread.php?t=99935


    I should note that I am almost 99% sure the window switches in the 03+ are surface mount bulbs but am not sure. I was supposed to get a switch from someone and never ended up getting it so I could figure it out. If someone wants to do this and has an extra switch around and wants to ship it to me I can do it. Also if someone wants to tackle it them self I can walk you thru it. All I need is a picture and some volts readings and the rest I can explain how to do.
     
    Last edited: Oct 10, 2010