SERVICE MANUAL UPDATE SEC. 6E3 REVISED CODE 21 DIAG. CHART

Subject: THROTTLE POSITION SENSOR (TPS) REVISED CODE 21 CHART

Model and Year: 1992 CORVETTE WITH 5.7L (LT1)

This attached Code 21 Diagnostic Chart replaces the Diagnostic Chart found in Driveability and Emissions (SECTION 6E3) on page 6E3-A-47 of the 1992 Corvette Service Manual. The shaded area on the Chart reflects the change.

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.