LOW IDLE SPEED AND STALLS ON LAUNCH (NEW PROM) M/T

LOW IDLE SPEED AND LAUNCH STALLS

Model and Year: 1985 CORVETTES WITH MANUAL TRANSMISSION --------------

TO: ALL CHEVROLET DEALERS

Some 1985 Corvettes with manual transmission may experience complaints of low idle speed and launch stalls. If these complaints occur it will be necessary to replace the ECM calibration PROM.

This new PROM, P/N 1227806 raises the idle speed to 750 RPM.

Use applicable labor time and operation number.

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.