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Passenger Temperature Offset Does Not Function Properly

WARNING: This page is about a different car, the 1998 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform NORMAL SYSTEM RESPONSE TEST . Outside temperature should be at 48°F (8°C) or greater. Start vehicle and bring to operating temperature. Set A/C-heater control air delivery mode to PASS ZONE and set temperature to 85°F (8°C). Set Passenger Climate Control (PCC) to coolest setting. If outlet temperature differential is 8 to 15°F (-4 to -11°C), go to next step. If outlet temperatures do not differ as specified, go to step 4).
  2. Set temperature on A/C-heater control to 65°F (18°C), set PCC to hottest setting. If outlet temperature differential is 8 to 15°F (-4 to -11°C), go to next step. If outlet temperatures do not differ as specified, go to step 4).
  3. System operating as designed. Explain operation to customer.
  4. Check door actuator for proper mounting, broken components or non-attached linkage rods.
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