There are 4 choices

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AC
- automatic auxiliary control (opt CJ2)
- manual auxiliary control (opt CJ3)
  - rear defrost
  - Without rear defrost
Without AC

Heater and A/C controls for 2003 GMC Sierra 2500

Attention!

There are 4 choices for the 2003 GMC Sierra 2500 Heater and A/C controls !!!
Choose Your Option

AC automatic auxiliary control (opt CJ2)
AC manual auxiliary control (opt CJ3) rear defrost
AC manual auxiliary control (opt CJ3) Without rear defrost
Without AC

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