ENGINE SURGE BETWEEN 35-55 MPH (MAN. TRANS-REPLACE EGR VALVE). Geo Storm 1990

For 1990-2009 cars

# ENGINE SURGE BETWEEN 35-55 MPH (MAN. TRANS-REPLACE EGR VALVE)

#### Subject: ENGINE SURGE BETWEEN 35 AND 55 MPH

#### Model and Year: 1990 STORM WITH MANUAL TRANSMISSION

THE FOLLOWING APPLIES TO FEDERAL AND CALIFORNIA EMISSIONS.

Some 1990 GEO Storms with the base SOHC engine and manual transmission built before VIN B/P L7571421 may exhibit an engine surging condition between 35 and 55 MPH. If normal service procedures do not correct the condition, replace the EGR Valve with P/N 97027920.

Parts are currently available from GMSPO.

Use applicable Labor Code.

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.