FLUID LEAK NEAR GOVERNOR AREA CAUSED BY POROSITY
Model and Year: 1989 A CAR OR 1990 W CAR WITH 440-T4/HYDRA-MATIC 4T60 TRANSAXLE
BULLETIN COVERS: (Figure 1)
A fluid leak near the governor area on a 1989 A,or 1990 W car equipped with a THM 440-T4/HYDRA-MATIC 4T60 may be caused by porosity allowing fluid to seep out the case.
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 A Case Assembly Complete 1990 W
Parts are currently available from GMSPO.
LABOR TIME INFORMATION:
Labor Operation Number: K7800 - Case, Transaxle - Replace
Labor Time: See Chart Below
Vehicle Series
A W Case, Transaxle - Replace 6.5 7.6
SERVICE MANUAL REFERENCE:
Refer to the appropriate 1989 or 1990 Service Manual for proper procedures.
VEHICLES INVOLVED:
Involved are certain cars built within the following VIN breakpoints:
Model Assembly Year Model Body CarLine Plant From Through ---- ----- ---- ------- -------- ---- ------- 1989 Chevrolet A Celebrity Oklahoma Cty K6232058 K6234508
1989 Chevrolet A Celebrity Ste Therese K2110954 K2111667
1990 Chevrolet W Lumina Oshawa #1 L9110660 L9114825
1990 Chevrolet W Lumina Oshawa #2 L1108956 L1110545
1989 Chevrolet A Celebrity Ramos Arizpe KS530881 KS531656
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
