Some A.I.R. pipes from the check valve to the intake manifold may rust through from the inside out. This condition is caused by corrosive exhaust gases.
To reduce this condition, a stainless steel pipe will be used for service parts and for 1984 vehicles.
The A.I.R. pipe is a part of the five year/50,000 mile Emission Warranty.
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.