SERVICE MANUAL UPDATE SEC. 6E3 DRIVEABILITY AND EMISSIONS

Subject: ECM TERMINAL END VIEW

Model and Year: 1990-91 STORM WITH 1.6L ENGINE

This bulletin serves to revise page 6E3-C8-29 Transaxle Code 21 Engine Throttle Duty Signal (Open-Shorted Circuit) and page 6E3-A-11 ECM Terminal End View in Section 6E3 "Driveability And Emissions" of the 1990 and 1991 Geo Storm Service Manual.

See attached diagnostic tree chart, same page for both model years.

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.