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SIERRA 3500 PICKUP
- automatic temperature control (opt CJ2)
  - rear defrost (opt C49)
  - Without rear defrost
- manual control (opt C67)
  - rear defrost (opt C49)
  - Without rear defrost
    - heated mirror switch
    - Without heated mirror switch
SIERRA DENALI 3500
- rear defrost (opt C49)
- Without rear defrost

Heater and A/C controls for 2012 GMC Sierra 3500 HD

Fits: SIERRA DENALI 3500 rear defrost opt C49 (change)

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