The 1987-89 2.8L and 3.1L,(VIN Codes T and W) engines have intake and exhaust pushrods with different lengths. To distinguish the different length pushrods they have been identified with paint. The paint markings may be hard to recognize after prolonged use, but the pushrods may be identified by their different lengths. The intake pushrods are marked with orange paint and are 6 inches long, The exhaust pushrods are marked with blue paint and are 6 3/8 inches long.
Please insert this information in the following Service Manuals.
1987-88 Buick Century 1988-89 Buick Regal
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.