HARSH 1-2 UPSHIFT 2ND CLUTCH CK. BALL PEENING

Model and Year ALL 1983 AND 1984 THM 200-4R

Some 1983 and 1984 THM 200-4R model transmissions may experience a harsh 1-2 upshift. This harsh 1-2 upshift may be caused by the second clutch check ball peening the second clutch apply oil hole on the spacer plate. For location of the second clutch, apply oil hole on the spacer plate as shown in the illustration. To correct this condition, replace the valve body to spacer plate gasket, spacer plate to case gasket, and spacer plate; refer to your parts list for part numbers.

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.