A/T - Fluid Leak Near Governor Area Caused By Porosity
89pontiac15Bulletin Number: 89-7-41
Reference Number: 977130
Publish Date: 7/89
Subject: FLUID LEAK NEAR GOVERNOR AREA CAUSED BY POROSITY - REPLACE CASE
Models
Affected: 1989 6000, GRAND PRIX AND BONNEVILLE MODELS WITH 440-T4/4T60
Figure 1 - Fluid Leak Area Caused By Porosity:
BULLETIN COVERS: (Figure 1)
A fluid leak near the governor area on 1989 6000, Bonneville or Grand Prix models equipped with a THM 440-T4/HYDRA-MATIC 4T60 may be caused by porosity allowing fluid to seep out the case.
Figure 2 - Inspect For Case Die # 567:
SERVICE PROCEDURE: (Figure 2)
If the transaxle has a leak near the governor area, inspect the case die number as shown in Figure 2. If the die number is 567 and the VIN is within the following breakpoints listed under "Vehicles Involved", then replace the transaxle case.
SERVICE PARTS INFORMATION:
Part Number Description Model Year Model Usage
8662928 Pkg., Transaxle Service 1989 All
Case Assembly Complete
Parts are currently available from GMSPO.
LABOR TIME INFORMATION:
Labor Operation: K7800 - Case, Transaxle - Replace
Labor Time : See Chart Below
Vehicle Series
6000 Bonneville Grand Prix
Case, Transaxle - Replace 6.5 6.5 7.6
SERVICE MANUAL REFERENCE:
Refer to the appropriate 1989 Service Manual for proper procedures.
VEHICLES INVOLVED:
Involved are certain cars built within the following VIN breakpoints:
Model Assembly
Year Model Car Line Plant From Through
1989 Pontiac Bonneville Willow Run 290932 293462
1989 Pontiac 6000 Oklahoma Cty K6266997 K6269157
1989 Pontiac Grand Prix Fairfax KF316794 KF320348