NEW OIL PUMP VANES 2004R 700R4 - NEW PART NUMBER

MODELS AFFECTED: 1981-1987 THM 200-4R (MW9) ALL MODELS

BULLETIN COVERS

New 200-4R Transmission Oil Pump Assembly with Nodular Iron Vane Rings. The new design vane rings will reduce the possibility of vane ring distress.

DATE OF PRODUCTION CHANGE (Figure 1)

Beginning June 17, 1987 (Julian Date 168) all 1987 THM 200-4R transmissions were produced with these new vane rings.

SERVICE ACTION

The new design pump vane rings (212) can be used on any 1981 through 1987 THM 200-4R transmission. The past design vane rings can be used on any 1981 through 1987 THM 200-4R transmission. It is recommended that the new iron pump vane rings be used when replacement of the vane rings becomes necessary.

SERVICE PARTS INFORMATION

THM 200-4R transmissions:

8657692 Pump Vane Ring (2 required)

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.