FLUID LEAK NEAR GOVERNOR AREA CAUSED BY POROSITY

Models Affected: 1989 6000, GRAND PRIX AND BONNEVILLE MODELS WITH 440-T4/4T60

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.

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

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.