Campaign - Pickup Box Welds Missing
SERVICE UPDATEBulletin No.: 11159
Date: May 19, 2011
Subject: 11159 - Service Update for Inventory and Customer Vehicles - Pickup Box Welds - Expires with Base Warranty
Models:
2011 Chevrolet Silverado
2011 GMC Sierra
2500 Series Standard Pickup Box
This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason. This bulletin will expire at the end of the involved vehicle's New Vehicle Limited Warranty period.
Purpose
This bulletin provides a service procedure to install two fasteners on certain 2011 model year Chevrolet Silverado and GMC Sierra 2500 Series vehicles equipped with a standard pickup box. These vehicles may be missing two welds on the underside of the pickup box where the box platform and the right side inner panel connect. If a vehicle is loaded to maximum GVWR and repeatedly drives over severe potholes, the remaining four welds along that flange may fracture. Some localized cracking may be visible in the box platform; however, functionality of the box is not affected.
This service procedure should be completed as soon as possible on involved vehicles currently in dealer inventory and customer vehicles that return to the dealer for any type of service during the New Vehicle Limited Warranty coverage period.
Vehicles Involved
All involved vehicles are identified by VIN in the Global Warranty Management System - Investigate Vehicle History (GMVIS2) Application. Dealership technicians should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.
Additionally, a list of involved vehicles currently in dealer inventory is available on the "Service Update Bulletin Information" link under the "Service" tab in GM GlobalConnect (US) or attached to the GlobalConnect message (Canada) used to release this bulletin. Customer vehicles that return for service, for any reason, and are still covered under the vehicle's base warranty should also be checked for vehicle eligibility.
Parts Information
Parts required to complete this service update are to be obtained from General Motors Customer Care and Aftersales (GMCC&A). 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.
Service Procedure
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
Note
(1) Down-Standing Flange. Illustration shown from underneath the vehicle on the passenger's side of the vehicle. Look above the vehicle frame (2) near the right rear of the cab (3) and rear spring shackle (4) to locate the down-standing flange.
2. Locate the down-standing flange (1) with the missing welds. The down-standing flange is located on the passenger side of the vehicle between the pickup box platform (box bottom) and right side inner panel. Refer to the illustration.
3. There are two ends to the down-standing flange. The forward end of the flange (5) is near the vehicle cab. The rearward end of the flange (6) is located to the rear of the right rear spring shackle.
4. Measure 25 mm (1 in) inward from the rearward edge of the flange.
5. Mark this reference point with a marker.
6. Measure 25mm (1 in) inward from the reference point made in Step 5.
7. Mark this reference point with a marker.
8. Using a drill with a 6.4 mm (1/4 in) drill bit, drill two holes in the center of flange at the reference points as shown in the illustration.
9. Apply Zinc X, P/N 19257664 (US), 19257665 (CN), (or equivalent corrosion inhibitor) to the surface area of the flange where the two holes were made.
10. Install two 6 mm (15/64 in) bolts and nuts, P/N 11589177 and P/N 11609411.
11. Tighten bolts and nuts to 10 Nm (89 lb in).
12. Lower vehicle. Refer to Lifting and Jacking the Vehicle in SI.
Warranty Transaction Information
Submit a transaction using the table below.
* The amount identified in "Net Item" should represent the actual sum total of the current GMCC&A Dealer net price for lubricant needed to perform the required repairs, not to exceed $0.50 USD, $0.51 CAD, plus applicable Mark-Up or Landed Cost (for Export).
Dealer Program 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.
Disclaimer