FLUID LEAK NEAR GOVERNOR AREA CAUSED BY POROSITY

TRANSMISSION MODELS: VEHICLE APPLICATIONS:

ALL 1989 A,C,E,K,H,W CARS

Bulletin Covers:(Figure 1) ---------------- A fluid leak near the governor area on a 1989 A, C, E, H, K or W car equipped with a THM 440-T4/HYDRA-MATIC 4T60 may be caused by porosity allowing fluid to seep out of 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 All Case Assembly Complete

Parts are currently available from CANSPO.

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 Body Car Line Plant From Thru ---- ----- ---- -------- ----- ---- ---- 1989 Pontiac H Bonneville Willow Run 290932 293462

1989 Oldsmobile H Delta 88 Willow Run 393392 396165

1989 Cadillac C De Ville Orion 341088 346111 Fleetwood

1989 Oldsmobile C 98 Regency Orion 305672 306448

1989 Buick E Riviera Hamtramck K4418301 K4419540

1989 Oldsmobile E Toronado Hamtramck K4308214 K4308851

1989 Cadillac E Eldorado Hamtramck 624826 626047

1989 Cadillac K Seville Hamtramck 818487 819367

1989 Oldsmobile A Cutlass Framingham KG348929 K6304155 Ciera

1989 Buick A Century Framingham KG412549 K6429870

1989 Oldsmobile W Cutlass Doraville KD382191 KD385960 Supreme

1989 Chevrolet A Celebrity Oklahoma Cty K6232058 K6234508

1989 Pontiac A 6000 Oklahoma Cty K6266997 K6269157

1989 Oldsmobile A Cutlass Oklahoma Cty K6303742 K6304155 Ciera

1989 Buick A Century Oklahoma Cty K6427386 K6429870

1989 Pontiac W Grand Prix Fairfax KF316794 KF320348

1989 Chevrolet A Celebrity Ste Therese K2110954 K2111667

1989 Oldsmobile A Cutlass Ste Therese K2426391 K2429891 Ciera

1990 Chevrolet W Lumina Oshawa #1 L9110660 L9114825

1990 Chevrolet W Lumina Oshawa #2 L1108956 L1110545

1989 Buick W Regal Oshawa #2 K1470258 K1470941

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.