Water Leak From HVAC Case On The Passenger Floor - keywords blower car case door recirc recirculation wash water
| Subject: | Water Leak From HVAC Case On The Passenger Floor |
| Models: | 2004-2009 Chevrolet Colorado |
| 2004-2009 GMC Canyon |
This PI was superseded to update model years. Please discard PIT4317.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment when taking their truck through a car wash that water drips on the passenger floor area. Others may comment of soap bubbles from the HVAC vents. This may be the result of using the HVAC system in the "Fresh Air" mode while going though the car wash. Most car washes submerse the vehicle with an excessive amount of water. With this rush of water, the vehicle cowl deflector may not be capable of diverting all of the water. If the vehicle's HVAC is left in "Fresh Air" mode, the water may enter the HVAC case and drip on the passenger floor.
Recommendation/Instructions:
To correct this condition, travel through car washes using "Recirculation" mode only. "Recirculation Mode" can only be used in "Bi-Level" and "Vent" HVAC modes.
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.
