For 1990-2009 cars

# OIL FILTER BYPASS VALVE 2.5L L4 ENGINE

#### VEHICLES AFFECTED: 1980-1985 'A', 'F', 'N', 'X', and 'P' (Re-released to update vehicles affected -Previously released as 83-6-19)

Whenever a repair requires replacement of the engine block, it will be necessary to remove the oil filter bypass valve assembly and reinstall it in the new block. If a new oil filter bypass check valve assembly is required, it will be necessary to order Part Number 25010497 through GMWDD. Refer to Figure.

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.