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GMC 1500 PICKUP
- AC
- Without AC
  - heavy duty opt C42
  - standard duty opt C41
SUBURBAN 1500
- AC
- Without AC
  - heavy duty heater (opt C42)
  - standard duty heater (opt C41)

Heater and A/C controls for 1978 GMC C15 Suburban

Fits: GMC 1500 PICKUP Without AC heavy duty opt C42 (change)

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