Service Update 52990 Water Leak in the Plenum/Cowl Area – 2016 Chevrolet Silverado & GMC Sierra

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Service Update
52990 Water Leak in the Plenum/Cowl Area

Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs

Parts

* Contact Kent Automotive at 1-800-563-1717 (Canada or US) or www.kent-automotive.com (US Only). Do not order from GMCCA. One 5oz. tube typically services 8 vehicles.

Warranty Information

* Sealer needed to perform the required repairs, not to exceed $5.00 USD ($4.20 CAD).

Service Procedure

Note: The following repair steps involve resealing the cowl/plenum area. When sealing this area, inspect the surrounding body seam sealer for voids, gaps or missing material. Reseal all seams as required.

1. Open the hood and install fender covers.
2. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in SI.

3. With a trim tool, hold the drain valve open as shown.
4. If required, clean any dirt or loose debris from the seam to be sealed.
5. Using a general purpose adhesive cleaner, clean the area to be sealed.

6. Apply seam sealer to the seam as shown above.
7. Allow the sealer to cure per the manufacturer’s instructions.
8. Remove the trim tool holding the drain valve open.
9. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in SI.
10. Remove the front side door sill garnish molding. Refer to Front Side Door Sill Garnish Molding Replacement in SI.
11. Perform a water test.
12. Lift the driver side front carpet and pad and verify that there is no water or dampness present.
13. Install the front side door sill garnish molding. Refer to Front Side Door Sill Garnish Molding Replacement in SI.
14. Remove fender covers and close hood.

Dealer Responsibility

Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility for service in the future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be sure the service update correction has been made before selling or releasing the vehicle.

All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession and subject to this bulletin must be held and inspected/repaired per the service procedure of this bulletin before customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration, or any other purpose.

All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System (CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified for sale within the CPOIS system, or once again be used in the CTP program.

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