Subject: | Right Rear Inner Brake Pad Wear (Install Rear Wheel Mud Flaps) |
Models: | 1999-2004 Chevrolet Silverado 1500 Series Pickup Models |
1999-2004 GMC Sierra 1500 Series Pickup Models |
This bulletin is being revised to change the content from Informational to Technical. Please discard Corporate Bulletin Number 00-05-23-005A (Section 05 - Brakes).
Some customers and dealers may comment on accelerated rear brake wear on some of the above listed vehicles. This condition occurs mainly on the right rear inboard brake pads and on vehicles that are exposed to extensive off-paved roads.
Install a mud flap forward of each rear wheel using the following procedure. Installation of these mud flaps and following the recommended off-road driving information provided in the vehicle's Owner's Manual should greatly reduce the possibility of accelerated rear brake component wear.
Important: Always work from outboard to inboard, drilling one hole at a time and securing with a fastener. Follow the sequence of the procedure. This will prevent distortion of the mud flap.
Important: After drilling the holes, apply the appropriate anti-corrosion primer. Refer to the GM Refinish Material Booklet #4901M-D (English) or #4901-D-F (French) for additional information.
Tighten
Tighten the fastener to 25 N·m (18 lb ft).
8.1. | Push the mud flap to make contact with the rear side of the underbody cross sill and mark the location of the hole (3) of the mud flap. |
8.2. | Center punch the marked location and drill a 5.159 mm (13/64 in) hole. |
8.3. | Install the screw. |
Tighten
Tighten the screw to 4 N·m (35 lb in).
8.4. | Repeat the above steps for hole locations 4 and 6. |
9.1. | Push the mud flap to make contact with the front side of the underbody cross sill and mark location of the hole (5) of the mud flap. |
9.2. | Center punch the marked location and drill a 5.159 mm (13/64 in) hole. |
9.3. | Install the screw. |
Tighten
Tighten the screw to 4 N·m (35 lb in).
9.4. | Repeat the above steps for hole location 6. |
Part Number | Description | Qty |
---|---|---|
15765007 | Flap Package - Rear Mud | 1 |
Parts are currently available from GMSPO.
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
---|---|---|
B7787* | Flap Package, Rear Mud -- Install (Both) | 0.6 hr |
*This is a unique labor operation number for use only with this bulletin. This number will not be published in the Labor Time Guide. |