A/C Module - Water Leak, Wet Carpet, Odor
89olds12SUBJECT HEATER AND A/C MODULE WATER LEAK-SEALING
PROCEDURE (USE OF SEALANT)
MODELS/YEARS 1988-90 CUTLASS SUPREME MODELS WITH ALL
ENGINES
NUMBER: 90-T-30
CORP.REF.NO: 931206
DATE: December 1989
SECTION: 1B
Figure 1:
Some of the above vehlcles have been reported as having water leaking from the Heater and A/C module. This water leak is coming from the lower front slde of the module, as shown in Figure 1.
This water leak causes the front carpet to be wet and the resultant musty odor that is being mistakenly diagnosed as A/C odor.
This water leak condition may be addressed by either one of the following service parts and the procedure listed.
Quantity
Part Number Part Name
1 * 1052915 * Silicone Sealant RTV
1 ** 08670 - 3oz. Tube ** High Temp Gasket Sealant
* Part is currently available from GMSPO. ** Purchase locally
PROCEDURE:
1. Raise vehicle and remove the A/C module rubber drain tube and lower the vehicle.
2. Remove the instrument panel lower sound insulator panels.
3. Pull back the carpet and remove the adapter duct (2 screws).
4. Remove the heater outlet duct (3 screws).
5. Remove the A/C module lower cover (7 screws).
6. Fill the front groove of the module, in the area indicated in Figure 1, with the specified sealant out to the screw attachment on each side of the area.
7. Reinstall the A/C module lower cover.
8. Reinstall the heater outlet duct.
9. Reinstall the adapter duct and replace the carpet.
10. Reinstall the instrument panel lower sound insulator panels.
11. Raise the vehicle and reinstall the A/C module drain tube and lower the vehicle.
WARRANTY INFORMATION:
Labor Operation Number: T1545
Labor Time: 0.7 Hours
Trouble Code: 92