Customer Satisfaction - Roof Clearance Center Lamp Water Leak

General Motors has decided that certain 2002 Chevrolet Silverado and GMC Sierra vehicles equipped with roof clearance lamps at built at the Flint and Pontiac East assembly plants have a water leak at the roof clearance center lamp.

Dealers are to install a new gasket.

Involved are certain 2002 Chevrolet Silverado and GMC Sierra vehicles equipped with roof clearance lamps, built at the Flint and Pontiac East assembly plants within these VIN breakpoints:

Important: Dealers should confirm vehicle eligibility through GMVIS (GM Vehicle Inquiry System) or GM Access Screen (Canada only) or DCS Screen 445 (IPC only) prior to beginning recall repairs. [Not all vehicles within the above breakpoints may be involved.]

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 recall bulletin. The customer name and address data furnished will enable dealers to follow up with customers involved in this recall. Any dealer not receiving a computer listing with the recall bulletin has no involved vehicles currently assigned.

These dealer listings may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this recall.

Important: 100% of parts required to complete this recall will be pre-shipped to involved dealers of record. This pre-shipment is scheduled to begin the week of October 29, 2001. Parts received for a recently transferred vehicle should be forwarded by the original dealer (with a phone call) to the dealer that received the transferred vehicle. Pre-shipped parts will be charged to dealer's open parts account.

Additional parts, if required, are to be obtained from General Motors Service Parts Operations (GMSPO). Please refer to your "involved vehicles listing" before ordering parts. Normal orders should be placed on a DRO = Daily Replenishment Order. In an emergency situation, parts should be ordered on a CSO = Customer Special Order.

1. Remove the six screws that are retaining the center roof clearance lamp to the roof.
2. Lift the lamp assembly straight up off the roof, allowing the clips (gray metal) and the clip extensions (white molded plastic) to remain in place attached to the roof.

-	If the clip is not fully seated in the roof panel, press the clip into the panel until the bottom side of the clip extension is flush with the roof panel.

-	If the clip extension separates from the clip, lift the clip slightly off the roof panel to allow the clip extension to slide under the flange to reinstall the clip extension.

-	If the clip and clip extension were pulled out of the panel when the lamp was removed, inspect the clip for damage. If the clip is damaged, replace it with one provided in the kit. If it is not damaged, reinstall it, ensuring that the clip extension is flush with the roof panel.

3. Disconnect the wire harness from the roof clearance assembly by lifting up on the retaining feature which is located on the connector.
4. Remove any water that was trapped under the lamp assembly.

Important: Support the base when removing the gasket.

5. Separate the gasket from the lens. Discard the gasket.
6. Remove the protective film on the new gasket.
7. Position the gasket onto the base and secure the 9 mushroom clips into the square openings in the base.
8. Press the lens into the butyl sealer.
9. Check the perimeter to make sure than the lens does not protrude outside of the gasket. This will ensure that the lens edge will not get caught on the gasket flange during installation to the roof panel.
10. Make the electrical connection between the wire harness and the roof clearance assembly.
11. Align the lamp over the clip extensions and lower the assembly onto the clip extensions.

Use a small screwdriver to line the clip extension up with the holes in the lens if the assembly does not set flush to the roof panel.

12. Install and hand tighten the six screws that retain the roof clearance assembly to the roof.

Tighten
Tighten the screws in the sequence indicated below.

•	Tighten the two rear screws to 2-2.5 N·m.

•	Tighten the two front screws to 2-2.5 N·m

•	Tighten the two outboard screws to 2-2.5 N·m

13. Install the GM Recall Identification Label.

For US and IPC

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

Put the Recall Identification Label on a clean and dry surface of the radiator core support in an area that will be visible to people servicing the vehicle. When installing the Recall Identification Label, be sure to pull the tab to allow the adhesion of the clear protective covering. Additional Recall Identification Labels for US dealers can be obtained from Dealer Support Materials by calling 1-866-700-0001 (Monday-Friday, 8:00 am to 5:00 pm EST). Ask for Item Number S-1015 when ordering.

Additional Recall Identification Labels for IPC dealers can be obtained from your Regional Marketing Office.

For Canada

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

Put the Recall Identification Label on a clean and dry surface of the radiator core support in an area that will be visible to people servicing the vehicle. Additional Recall Identification Labels for Canadian dealers can be obtained from DGN by calling 1-800-668-5539 (Monday-Friday, 8:00 am to 5:00 pm EST). Ask for Item Number GMP91 when ordering.

Submit a Product Recall Claim with the information indicated below.

Refer to the General Motors WINS Claim Processing Manual for details on Product Recall Claim Submission.

For US and Canada

Customers will be notified of this recall on their vehicles by General Motors (see copy of customer letter included with this bulletin).

For IPC

Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached suggested dealer letter.

All unsold new vehicles in dealers' possession and subject to this recall MUST be held and inspected/repaired per the service procedure of this recall bulletin BEFORE customers take possession of these vehicles.

Dealers are to service all vehicles subject to this recall 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 customer letter accompanying this bulletin. Recall 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 recall enters your vehicle inventory, or is in your dealership for service in the future, you must take the steps necessary to be sure the recall correction has been made before selling or releasing the vehicle.

Dear General Motors Customer:

We want your experience owning your 2002 Silverado or Sierra to be better than any other you've had ... which is why we're writing.

We have learned that your Silverado or Sierra may have a water leak at the roof clearance center lamp.

We've sent a new gasket to your dealer that will prevent a water leak at the roof clearance center lamp. this has been done so your vehicle can be serviced as quickly as possible. This service will be performed for you at no charge .

We recommend that you contact your dealer to arrange a service date.

Presenting the attached card to your dealer will assist in making the necessary correction in the shortest possible time.

If you no longer own this vehicle, please check the appropriate box and provide new owner information, if available.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below:

We sincerely regret any inconvenience this causes you. Also, we want you to know that we will continue to do everything we can to ensure that you are completely satisfied with your Silverado or Sierra and with Chevrolet and GMC.

General Motors Corporation

Enclosure