NEW OXYGEN SENSOR RELEASED WITH IMPROVED DURABILITY

Subject: OXYGEN SENSOR WITH IMPROVED DURABILITY

Model and Year: 1990-91 GEO STORM ----------------------------------------------------------------------------

Some 1990 and 1991 GEO Storms may have been equipped with an A.C. Rochester Oxygen Sensor. Should it be necessary to replace the Oxygen Sensor, use the Nippondenso part numbers listed below:

1990-91 Base SOHC - 97018586

1990-91 GSI DOHC - 97018587

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.