Grand Prix V6-191 3.1L (1989)
Control Module HVAC: Customer Interest
HVAC Module - Water Leaks
Bulletin Number:
90-1-4
Reference Number:
931206
Publish Date:
11/89
Subject:
HVAC MODULE WATER LEAK-SEALING PROCEDURE (USE OF SEALANT)
Models
Affected:
1988-90 GRAND PRIX MODELS WITH ALL ENGINES
Figure 1
Some of the above vehicles have been reported as having water leaking from the HVAC module. This water leak is coming from the lower front side 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 procedures.
Quantity
Part Number
Part Name
1
1052915
Silicone Sealant RTV
1
** 08670 - 3 oz. 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 close out panels (hush panels).