Included with this bulletin are some updated EFI Diagnostic Charts. These charts can be kept in your 1983 Service Manual until complete pages are issued in a Service Manual revision.
Listed below are the revised charts and 1983 Service Manual page numbers:
Chart 3 Page 6E2-27 Chart 8 Page 6E2-35 Chart 8H Chart 11 Page 6E2-44 Chart 22 Page 6E2-49 Chart 44 Page 6E2-55
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.