NEW DESIGN TRANSMISSION FLUID FILTER AND SEAL P/N

VEHICLE APPLICATIONS:

THM 200-4R EQUIPPED VEHICLES

NOTICE: THIS BULLETIN SUPERSEDES BULLETIN 88-7200-100.

BULLETIN COVERS: (Figure 1) --------------- Return to previous design filter for service and production. Due to supplier concerns, production and service use of the new design filter will be put "on hold" for an indefinite time. The previous design filter will be used in production and service.

DATE OF PRODUCTION CHANGE:

Refer to Figure 2 to identify previous design filter and seals. Refer to Figure 3 to identify new design filter and seal.

June 15, 1987 (Julian Date 166) new filter and previous O-ring seals (2 required) in production for some 200-4R units.

August 28, 1987 (Julian Date 240), new filter and new seal in production for all 200-4R units.

November 25, 1987 (Julian Date 329), previous filter and new seal in production for all 200-4R units. NOTICE: When servicing a 1987 or 1988 THM 200-4R, any one of three combinations of filter and seals(s) may be encountered.

SERVICE PARTS INFORMATION:

When replacing the filter on any past or current model THM 200-4R transmission, use the following package: 8639951 (includes previous filter, previous O-ring seals and pan gasket).

SERVICE MANUAL REFERENCE:

Refer to THM 200-4R (MW9) Automatic Transmission Unit Repair Table of Contents for fluid filter service information.

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.