SERVICE MANUAL UPDATE-SEC. 6E3 DRIVE/EMISS. REV CODE 39 CHART

VEHICLES AFFECTED: 1989 "A" 3300 (VIN N)

This bulletin is to replace the Code 39 Diagnostic chart on page 6E3-A-59 in Section 6E3 "Driveability and Emissions" for the 1989 "A" carline with the 3300 engine and 4T60 transaxle.

The QDM state displayed on a "Scan" tool is inaccurate unless the engine is running.

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.