HVAC Operation During Remote Start - keywords a/c ac air ambient center conditioning defrost dic display driver entry heat heater hvac instrument ipc keyless oat outside panel remote rke rvs start
| Subject: | HVAC Operation During Remote Start |
| Models: | 2006-2008 Chevrolet Impala |
| 2006-2007 Chevrolet Monte Carlo |
This PI was superseded to update model years. Please discard PIC4019B.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Operation of the HVAC system during a remote vehicle start event.
Recommendation/Instructions:
COLD | AMBIENT | HOT | |
OAT | 48.2°F or colder (9°C) | Between 48.2°-82.4°F (9°C - 28°C) | 82.4°F or warmer (28°C) |
MODE | Detent 8 (Defrost -1) | Detent 2 (Bi-Level -1) | Detent 1 (Panel) |
Blower | 90% (Full Blwr) | 45% (~half blwr) | 90% (Full Blwr) |
Recirc/OSA | OSA | OSA | RECIRC |
TEMP | Full HOT | 25% off Full Cold | Full COLD |
Rear Defog | ON | OFF | OFF |
Heated Seat | ON | OFF | OFF |
Note: For the 2006/2007 C67 single zone equipped Impala and Monte Carlo: If the blower and mode are correct but the temperature is not correct, please refer to TSB 07-01-38-002.
It is also important to note that if the vehicle sits for less than 3 hours after key off, the OAT uses the last stored value which may be incorrect by the time you get back to the vehicle. This can effect HVAC operation during remote start.
Note: If the HVAC does not function as above, it will be necessary to program the HVAC control head with the latest calibrations.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
