This bulletin services to revise the Code 42 Chart on page 9J-A-43 in Section 9J-A "Supplemental Inflatal e Restraint" in the 1990 "Y" Service Manual.
The blue connecter referenced in the chart, step 3, should be a brown connector.
Revised art is attached.
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.