u get a new head they are leds and cant be replaced.
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Work at a Chrysler,Dodge,Jeep Dealer<Master AC/Electrical/Engine Performance
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There is an illumination bulb behind the control that lights both rotary dials. You need to remove the radio bezel/HVAC control (you'll see the screws) , then there is a cover on the back you can remove and you will see a single bulb that twists out. It should be available at any auto parts store. Good luck!
2000 GC HVAC controls
