CAMPAIGN: INCORRECT LINEAR EXHAUST GAS. GMC Truck GMC C Pickup

NOTE: GM OF CANADA CAMPAIGN 97024 IS LOCATED BELOW THE U.S. VERSION

PRODUCT EMISSION CAMPAIGN

SUBJECT: 97024 - INCORRECT LINEAR EXHAUST GAS RECIRCULATION VALVES USED FOR SERVICE

MODELS: 1996-1997 C/K, S/T, M/L, G AND P TRUCKS WITH 4.3L (L35/LF6), 5.0L (L30) AND 5.7L (L31) ENGINES

General Motors has decided to conduct a Voluntary Emission Campaign involving certain 1996-97 C/K, S/T, M/L, G and P model vehicles equipped with 4.3L (RPO L35 or LF6), 5.OL (RPO L30), and 5.7L (RPO L31) engines. Due to Service Parts Catalog part number reference errors, these vehicles may have been serviced with an incorrect Linear Exhaust Gas Recirculation (LEGR) valve according to warranty records. An incorrect LEGR valve may cause the On-Board Diagnostic emission system to not operate as intended and/or cause driveability complaints.

To correct this condition, dealers are to install the correct LEGR valve on vehicles identified as having been serviced with incorrect part number.

VEHICLES INVOLVED

Involved are certain 1996-97 C/K, S/T, M/L, G and P model vehicles equipped with 4.3L (RPO L35 or LF6), 5.OL (RPO L30), and 5.7L (RPO L31) engines that were serviced with an incorrect Linear EGR valve.

NOTICE: Dealers should confirm vehicle eligibility through VISS (Vehicle Information Service System) or ServiceNet (GMC only) prior to beginning campaign repairs.

Involved vehicles have been identified by Vehicle Identification Number. Computer listings containing the complete Vehicle Identification Number, customer name and address data have been prepared, and are being furnished to involved dealers with the campaign bulletin. The customer name and address data furnished will enable dealers to follow-up with customers involved in this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.

These dealer listings may contain customer 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.

PARTS INFORMATION

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). Please refer to your "involved vehicles listing" prior to ordering. Normal orders should be placed on a DRO = Daily Replenishment Order. An emergency requirement should be ordered on a CSO Customer Special Order.

Part Quantity/ Number Description Vehicle

17113405 Valve Assembly, EGR 1 12555896 Gasket, EGR 1

CUSTOMER NOTIFICATION

Customers will be notified of this campaign on their vehicles by General Motors (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).

In order to ensure full protection under the emission warranty, and the right to participate in future recalls, the customer notification letter recommends that customers have their vehicles serviced as soon as possible. It also advises that failure to do so could legally be determined to be lack of proper maintenance.

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 customers take possession of these vehicles.

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

Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. This could be done by mailing to such customers a copy of the appropriate divisional customer letter accompanying this bulletin. Campaign follow-up cards should not be used for this purpose, since the customer 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.

When a California emissions campaign is completed by a GM dealer, the dealer must provide the vehicle owner a "Proof Of Correction Certificate" which the owner may need to present to the California Department Of Motor Vehicles (DMV) when renewing their vehicle registration. Without this correction certificate, the owner may be unable to renew their vehicle registration.

Additional Certificates can be obtained, at no charge, from VISPAC, Incorporated by calling 1-8.00-269-5100, Monday through Friday, 8:00 A.M. to 4:30 P.M. Eastern Standard Time. Ask for GM Item Number 1825 when ordering.

SERVICE PROCEDURE

1. Remove air cleaner element (G/P, and M/L only).

2. Loosen air inlet pipe clamp closest to the air intake bonnet assembly (G/P, and M/L only).

3. Remove the air intake bonnet assembly (G/P, and M/L only).

4. Disconnect the linear EGR valve electrical connector.

5. Remove the EGR valve attaching bolts.

6. Remove the EGR valve and gasket.

7. Install new gasket p/n 12555896.

8. Install new EGR valve p/n 17113405.

IMPORTANT: The gasket and valve must be properly aligned as shown in Figure 1 such that the electrical connection terminal on the EGR valve is approximately in the nine o'clock position or on the left, when facing the front of engine.

9. Reinstall fastening bolts. Tighten bolts the first time to 10 Nm (89 lb in) each. Tighten bolts a final time to 25 Nm (18 lb ft) each.

10. Install the electrical connector.

11. Reinstall the air intake bonnet assembly (G/P, and M/L only).

12. Tighten air inlet pipe clamp closest to the air intake bonnet assembly (G/P, and M/L only).

13. Reinstall air cleaner element (G/P, and M/L only).

14. Install the GM Campaign Identification Label.

15. California dealers only, provide owner with a "Vehicle Emission Recall Proof Of Correction" certificate.

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 by the customer for periodic servicing. When installing the Campaign Identification Label, be sure to install the clear protective covering. Additional Campaign Identification Labels can be obtained from VISPAC Incorporated by calling 1-800-269-5100 (Monday-Friday, 8:00 a.m. to 4:30 p.m. EST). Ask for Item Number S-1015 when ordering.

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

CLAIM INFORMATION

Submit a Product Campaign Claim with the information indicated below:

* REPAIR PART FAILED PARTS LABOR LABOR PERFORMED COUNT PART NO. ALLOW CC-FC 0P HOURS

Replace LEGR Valve - C/K 2 17113405 ** MA-96 V0061 0.2 G 0.3 S/T 0.4 M/L,P 0.5

* For Campaign Administrative Allowance, add 0.1 hours to the "Labor Hours".

** The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 40% for the LEGR valve and gasket needed to complete the repair.

Refer to the General Motors Corporation Claims Processing Manual for details on Product Campaign Claim Submission.

97024

(Sample Of Notification Used)

August, 1997

Dear <Division(s)> Customer:

This notice is sent to inform you that General Motors is conducting a voluntary emission recall campaign that includes your vehicle.

Reason For This Recall: General Motors has decided that certain 1996-97 C/K, G, P, SIT and M/L model vehicles equipped with 4.3L, 5.OL and 5.7L engines may have been serviced with an incorrect Linear Exhaust Gas Recirculation valve, due to Service Parts Catalog part number reference errors. According to GM warranty repair records, your vehicle is one of the affected models that has had an incorrect valve installed during service. An incorrect valve may cause your On-Board Diagnostic emission system to not operate as intended and/or cause driveability complaints.

What Will Be Done: To correct this condition, your dealer will install the correct valve on your vehicle. This service will be performed for you at no charge.

Contacting Your Dealer: Please contact your dealer as soon as possible to arrange a service date and to assure parts availability Instructions for making this correction have been sent to your dealer. Please ask your dealer if you wish to know how much time will be needed to schedule, process and repair your vehicle.

Should your dealer be unable to schedule a service date within a reasonable time, you should contact the appropriate Customer Assistance/Relations Center at the listed number below:

Deaf, Hearing Impaired Division Number or Speech Impaired *

Chevrolet 1-800-222-1020 1-800-833-2438 GMC 1-800-462-8782 1-800-462-8583 Oldsmobile 1-800-442-6537 1-800-833-6537

* Utilizes Telecommunication Devices for the Deaf/Text Telephones (TDD/TTY)

Customer Reply Card: The enclosed customer 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 no longer own this vehicle, please let us know by completing the postage paid reply card and returning it to us.

Emission Law Information: In order 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.

IMPORTANT MESSAGE FOR CALIFORNIA RESIDENTS

The California Air Resources Board (CARB) requires vehicle emission recall campaigns be completed prior to California registration renewal. Uncorrected emission recall campaigns will result in the inability to renew your California vehicle registration.

At the time of emission campaign completion, your California dealer will issue a "Proof Of Correction Certificate". Keep this certificate and, if required, present it to the Department of Motor Vehicles when renewing your California registration as proof of campaign completion.

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

<Division(s)> GENERAL MOTORS CORPORATION

Enclosure

** CANADIAN VERSION **

PRODUCT EMISSION CAMPAIGN

SUBJECT: CAMPAIGN 97024 - INCORRECT LINEAR EXHAUST GAS RECIRCULATION VALVES USED FOR SERVICE

MODELS: 1996-1997 C/K, S/T, MIL, G AND P TRUCKS WITH 4.3L (L35/LF6),5.OL (L30) AND 5.7L (L31) ENGINES

DEFECT INVOLVED

General Motors of Canada Limited has decided to conduct a Voluntary Emission Campaign involving certain 1996-97 C/K, S/T, M/L, G and P model vehicles equipped with 4.3L (RPO L35 or LF6), 5.OL (RPO L30), and 5.7L (RPO L3 1) engines. Due to Service Parts Catalogue part number reference errors, these vehicles may have been serviced with an incorrect Linear Exhaust Gas Recirculation (LEGR) valve according to warranty records. An incorrect LEGR valve may cause the On-Board Diagnostic for the emission system to not operate as intended and/or cause driveability complaints.

To correct this condition, dealers are to install the correct LEGR valve on vehicles identified as having been serviced with incorrect part number.

VEHICLES INVOLVED

NOTE: PLEASE CHECK DCS SCREEN 445 OR YOUR V.I.N. LISTING BEFORE PERFORMING CAMPAIGN TO ENSURE THAT THE VEHICLE IS AFFECTED. ONLY AFFECTED VIN'S WILL BE PAID.

PARTS INFORMATION

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). Please refer to your "involved vehicles listing" prior to ordering requirements.

Quantity/ Part Number Description Vehicle

17113405 Valve Assembly, EGR 1 12555896 Gasket, EGR 1

CUSTOMER NOTIFICATION

All customers of record at the time of campaign release are shown on the attached computer listing and have been notified by first class mail from General Motors (see copy of customer letter included with this bulletin). The listings provided are for campaign activity only and should not be used for any other purpose.

DEALER CAMPAIGN RESPONSIBILITY

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

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

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

SERVICE PROCEDURE

1 .Remove air cleaner element (G/P, and MAL only).

2. Loosen air inlet pipe clamp closest to the air intake duct assembly (G/P, and M only).

3. Remove the air intake duct assembly (G/P, and M/L only).

4. Disconnect the linear EGR valve electrical connector.

5. Remove the EGR valve attaching bolts.

6. Remove the EGR valve and gasket.

7. Install new gasket P/N 12555896.

8. Install new EGR valve P/N 17113405.

IMPORTANT: The gasket and valve must be properly aligned as shown in Figure 1 such that the electrical connection terminal on the EGR valve is approximately in the nine o'clock position or on the left, when facing the front of engine.

9. Reinstall fastening bolts. Tighten bolts the first time to 10 N-m (89 lb. in.) each. Tighten bolts a final time to 25 N-m (18 lb. ft.) each.

10. Install the electrical connector.

11. Reinstall the air intake duct assembly (G/P, and M/L only).

12. Tighten air inlet pipe clamp closest to the air intake duct assembly (G/P, and N" only).

13. Reinstall air cleaner element (G/P, and M/L only).

14. Install the 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 by the customer for periodic servicing. Additional Campaign Identification Labels can be obtained from DGN by calling 1-800-668-5539 (Monday-Friday, 8:00 a.m. to 5:00 p.m. EST). Ask for Item Number GMP 91 when ordering.

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

CLAIM INFORMATION

Submit a Product Campaign Claim with the information indicated below:

* REPAIR PERFORMED PART FAILED PARTS LABOUR LABOUR COUNT PART NO. ALLOW CC-FC 0P HOURS

Replace LEGR Valve - C/K 2 17113405 ** MA-96 V0061 0.2 G 0.3 S/T 0.4 M/L,P 0.5

* For Campaign Administrative Allowance, add 0.1 hours to the "Labour Hours".

** The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 40% for the LEGR valve and gasket needed to complete the repair.

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

August 1997

Dear General Motors Customer:

General Motors of Canada Limited has decided that certain 1996-97 C/K, G, P, S/T and MAL model vehicles equipped with 4.3L, 5.OL and 5.7L engine may have been serviced with an incorrect Linear Exhaust Gas Recirculation valve, due to Service Parts Catalogue part number reference errors. According to GM warranty repair records, your vehicle is one of the affected models that has had an incorrect valve installed during service. An incorrect valve may cause your On-Board Diagnostic emission system to not operate as intended and/or cause driveability complaints.

To correct this condition, your GM dealer will install the correct valve on your vehicle.

This service will be provided for you at no charge.

Please contact your GM dealer as soon as possible to arrange a service date.

If parts are required, ask your dealer for details regarding their availability. If parts are not in stock, they can be ordered before scheduling your service date.

This letter identifies your vehicle. Presentation of this letter to your dealer will assist their Service personnel in completing the necessary correction to your vehicle in the shortest possible time.

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

Customer Support Department General Motors of Canada Limited

97024

JL:il

Object Number: 169978 Size: MF

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.