All gasoline engines and the 6.2L diesel engine used in 1983 production Chevrolet vehicles will be painted black.
This change is part of the engine compartment clean-up program effective SOP 1983.
The Oldsmobile 4.3L and 5.7L diesel engines will retain the blue color for 1983 production.
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.