In the event of corrosion in the engine pulsair assembly, the original part should be replaced with a stainless steel assembly (P/N 22048270).
The replacement of this component is covered by the five (5) year/80,000 km emission component warranty. Use most applicable labour operation from Canadian Labour Time Guide and claim .7 hours.
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.