- Ensure that the plenum that draws air from the outside is clear
of all debris.
- Disable the A/C compressor clutch operation by disconnecting the
clutch coil.
- In order to dry the evaporator core, complete the following steps:
| 3.1. | Turn the ignition switch to the ON position. |
| 3.2. | Operate the blower motor for a 10 minute period under the
following conditions: |
| • | Set blower motor speed on the high position. |
| • | Set the recirculation mode. |
| • | Set the temperature control on maximum heat. |
- Locate an area in the air condition duct downstream of the blower
motor fan, between the blower motor and the evaporator core.
- Drill a 3 mm (1/8 in) hole in a location that does
not interfere with the blower motor, the evaporator, or any operating part
in the system.
- Using safety goggles and latex gloves, insert the extension tube
of the deodorizer GM P/N 12370470 into the hole past the mark
on the tube.
| • | Spray the area in short bursts. |
| • | Dispense the contents of the can over a period of 2-3 minutes. |
| • | Vary the direction of the spray into the duct. |
- Turn the ignition switch to the OFF position.
Allow the vehicle to sit for a period of 3-5 minutes.
- Seal the hole in the duct with a body sealer or with a room temperature
vulcanizing gasket compound.
- Turn the ignition to the START position.
- With the fan on the high speed, idle the engine for a period of
15-20 minutes in order to dry the sealer or the compound.
- Reconnect the air conditioning compressor clutch coil.
- Verify the operation of the air conditioning system.
