Grand Prix V6-3.1L VIN J (2000)
Evaporator Drain Tube: Customer Interest
Evaporator Case - Water Leaks to The Interior
File In Section: 01 - HVAC
Bulletin No.: 00-01-38-012
Date: December, 2000
TECHNICAL
Subject:
Carpet Wet On Passenger Side of Vehicle
(Clean Evaporator Case Drain, If Plugged)
Models:
1999-2000 Buick Century, Regal
1999-2000 Chevrolet Monte Carlo
2000
Chevrolet Impala
1999-2000 Oldsmobile Intrigue
1999-2000 Pontiac Grand Prix
Condition
Some customers may comment that the carpet on the front passenger side is wet.
Cause
This may be caused by foreign material plugging the evaporator case drain.
Correction
Inspect the evaporator case drain for plugging.
1.
Raise the vehicle on a hoist.
2.
Remove the rubber elbow from the evaporator case drain tube by pulling the elbow straight off.
3.
Insert a 9 mm (11/32 in) drill bit, or any other similar-type instrument, into the evaporator case drain to clean out the material that is blocking the
drain. (The distance to the other side of the evaporator case is 130 mm (5 in)).
4.
Re-install the evaporator case drain rubber elbow. A small amount of silicone spray on the inside of the rubber tube will allow it to be slipped into
place very easily. Be sure that the rubber elbow drain hole is open.
If the evaporator case drain was not plugged, a water leak test will need to be performed using normal water testing procedures.
If no external water leak was found and the vehicle returns for the same type concern, the evaporator case will have to be removed from the vehicle and
the foreign material removed from the evaporator case.
Parts Information
No parts are required to perform this procedure. If the rubber elbow is missing from the vehicle, install a new elbow. The addition of this rubber elbow
will result in road and wind noise reduction at highway speeds.
Warranty Information
For vehicles repaired under warranty, use the table.
