CAMPAIGN: HIGH ALTITUDE CO-EXHAUST EMISSIONS. Geo Metro 1990

For 1990-2009 cars

# CAMPAIGN: HIGH ALTITUDE CO-EXHAUST EMISSIONS

#### Subject: PRODUCT EMISSION CAMPAIGN 90-C-51 - HIGH ALTITUDE CO EXHAUST EMISSIONS

#### Model and Year: 1990 GEO METRO WITH 1.0L ENGINE (VIN CODE "6" - RPO LP2) (NON-XFi VEHICLES ONLY)

#### To: All Chevrolet/Geo Dealers

The Administrator of the U.S. Environmental Protection Agency (EPA) and General Motors have determined that certain 1990 Geo Metro vehicles with 1.0L engines (VIN CODE "6" - RPO LP2) may exceed high altitude carbon monoxide (CO) Federal emission standards. This condition applies to vehicles registered in Colorado, Nevada, New Mexico and Utah (vehicles which have moved to these states from California which are equipped with RPO YF5 do not require this campaign repair). These standards were established to protect the public health and welfare from dangers of air pollution. Excess emission of pollutants may cause a vehicle to fail state mandated emission tests.

To correct this condition, vehicles registered in the four affected states will have a redesigned oxygen sensor installed.

#### VEHICLES INVOLVED

Involved are certain 1990 Geo Metro (NON-XFi vehicles only) equipped with 1.0L engines (VIN CODE "6" - RPO LP2) built within the following VIN breakpoints:

PLANT YEAR MODEL PLANT CODE FROM THROUGH -------------------------------------------------------------- 1990 M-Car Ingersoll "6" L6700558 L6772954

Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.

These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.

#### PARTS INFORMATION

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO) . To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a "C.I.O." order with no special instruction code, but on an advise code (2).

Part Number Description Quantity/Vehicle -------------------------------------------------------- 91171942 Oxygen Sensor 1

#### OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of owner letter included with this bulletin).

#### DEALER CAMPAIGN RESPONSIBILITY

All unsold new vehicles in dealers' possession and subject to this campaign must be held and inspected/repaired per the service procedure of this campaign bulletin before owners take possession of these vehicles.

Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.

Owners of vehicles recently sold from your vehicle inventory with no owner information indicated on the dealer listing, are to be contacted by the dealer, and arrangements made to make the required correction according to the instructions contained in this bulletin. This could be done by mailing to such owners a copy of the owners letter accompanying this bulletin. Campaign follow-up cards should not be used for this purpose, since the owner may not as yet have received the notification letter.

In summary, whenever a vehicle subject to this campaign enters your vehicle inventory, or is in your dealership for service in the future, please take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.

#### SERVICE PROCEDURE

1. Disconnect negative battery cable. Be sure to record radio settings prior to disconnecting cable so settings can be reset in step 8.

2. Disconnect oxygen sensor electrical connector.

3. After exhaust system has cooled, spray penetrating oil (allow to soak in) on threaded portion of oxygen sensor.

4. Unscrew & remove oxygen sensor from exhaust manifold.

5. Apply a SMALL amount of anti-seize compound on threads prior to installation of new oxygen sensor. Be certain no anti-seize compound is applied to base of oxygen sensor.

6. Torque sensor to 45-55 Nm (33-39.5 lb. ft.).

7. Reconnect oxygen sensor electrical connector.

8. Connect negative battery cable. Reset clock and radio settings.

9. Install Campaign Identification Label.

#### CAMPAIGN IDENTIFICATION LABEL

Each vehicle corrected in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label". Each label provides a space to include the campaign number and the five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or a ball point pen.

Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner. Additional "Campaign Identification Labels" can be obtained from DAC.

Apply "Campaign Identification Label" only on a clean, dry surface.

#### CLAIM INFORMATION

Submit a Product Campaign Claim with the information indicated below:

* REPAIR FAILED PARTS LABOR LABOR OTHER PERFORMED PC PART NO. ALLOW CC-FC OP HOURS HOURS ------------------------------------------------------------------- Replace Oxygen 1 91171942 ** SK-00 V9100 0.2 0.1 Sensor

* Campaign Administrative Allowance.

** The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 30% of all parts required for the repair.

Refer to the Chevrolet Claims Processing Manual for details on Product Campaign Claim Submission.

Dear Geo Metro Owner:

This notice is sent to inform you that Chevrolet Motor Division is conducting an emission recall campaign that includes your vehicle.

#### REASON FOR THIS RECALL

The Environmental Protection Agency (EPA) and General Motors have determined that certain 1990 Geo Metro vehicles with 1.0L engines may exceed high altitude carbon monoxide (CO) Federal emission standards. This condition applies to vehicles registered in Colorado, Nevada, New Mexico and Utah. These standards were established to protect the public health and welfare from the dangers of air pollution. Excess emission of pollutants may cause a vehicle to fail state mandated emission tests.

#### WHAT WE WILL DO

To correct this condition, your dealer will install a redesigned oxygen sensor. This service will be performed for you at no charge.

#### WHAT YOU SHOULD DO

Please contact your Chevrolet dealer as soon as possible to arrange a service date and to ensure parts availability. Instructions for making this correction have been sent to your dealer. The repairs will take approximately 10 minutes. Please ask your dealer if you wish to know how much additional time will be needed to schedule, process and repair your vehicle.

The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid reply card and returning it to us. Should your dealer not schedule a service date within a reasonable time, you should "Contact the Chevrolet Customer Assistance Center by calling 1-800-222-1020.

If your dealer and the Customer Assistance Center are unable to remedy this condition within a reasonable time, you may wish to advise the Environmental Protection Agency at the following address: Director, Manufacturers Operations Division (6405J), United States Environmental Protection Agency, 401 M Street., S.W., Washington, D.C. 20460.

To ensure your full protection under the emission warranty made applicable to your vehicle by State or Federal Law, and your right to participate in future recalls, it is recommended that you have your vehicle serviced as soon as possible. Failure to do so could legally be determined to be lack of proper maintenance of your vehicle. Also, your vehicle may fail a state or local emission inspection if this recall is not accomplished.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

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.