Service Procedures
INSPECTION PROCEDURE - (FIGURE 1)
The vehicles involved have front seat belt assemblies that have an energy management loop system which are covered by a plastic sleeve. To properly identify the retractor assemblies that are involved in the bulletin, follow the inspection procedure listed.
1. Open the driver/passenger door for 1994 vehicles; passenger door only for 1995 vehicles. Locate the seat belt retractor assembly portion of the seat belt (installed at the "B" pillar).
- For the retractor assembly that has 2 plastic sleeves (1 attached to the shoulder and 1 attached to the lab belt webbing) (Figure 1, Item 1), continue on in the bulletin for proper service procedures that need to be performed.
- For the retractor assemblies that have a single plastic sleeve on the shoulder belt webbing only, or has no plastic sleeves (Figure 1, Item 2), NO REPAIR IS REQUIRED. A campaign Identification Label should be installed at this time.
SERVICE PROCEDURE "A"
For 1994-1995 C/K With RPO L49 (VIN Code P) and RPO L56 (VIN Code S) Diesel Engines Only
This procedure addresses removing the Seat Belt Retractor Assembly on 1994-1995 C/K With RPO L49, (VIN Code P) and RPO L56 (VIN Code S) Diesel Engines Only:
* For 1994 models: Replace both Driver and Passenger Side Retractor Assembly.
* For 1995 models: Replace the Passenger Side Retractor Assembly ONLY.
RETRACTOR REMOVAL PROCEDURE: (Figure 2)
1. Remove the anchor bolt cover from the door "B" pillar anchor plate. The cover swings bottom upward.
2. Remove anchor bolt from door "B" pillar weld nut.
3. Remove the anchor bolt retaining the seat belt retractor to the floor. To access the bolt, remove the access cover on the back side of retractor. This cover is removed from the top and is swung outward.
4. Remove the retractor/belt assembly.
Installation Procedures:
1. Install retractor system to the floor. When installing the anchor bolt, start the bolt by hand to ensure that the bolt is threaded straight. After bolt has been started, torque bolt to 55 Nm (41 lb. ft.). Close the cover.
IMPORTANT:
Before attaching the anchor plate to the door "B" pillar, make sure that the seat belt webbing is not twisted.
2. Install anchor bolt through the anchor plate and washer. When installing anchor bolt into weld nut located at the "B" pillar, start the bolt by hand to ensure that the bolt is threaded straight. After bolt has been started, tighten bolt and torque bolt to 55 Nm (41 lb. ft.).
3. Install cover over the door "B" pillar anchor plate.
4. Install Campaign Identification Label.
SERVICE PROCEDURE "B"
For 1994-1995 C/K With Any Gas Engine, Or L65 H.O. 6.5L Turbo (VIN Code F) Diesel Engine
This procedure addresses removal of stitching from the Energy Management (EM) loop, in the shoulder belt side of the seat belt assembly on 1994-1995 C/K With Any Gas Engine, Or L65 H.O. 6.5L Turbo (VIN Code F) Diesel Engine. This procedure MUST NOT be done to the lap belt side.
* For 1994 models: Remove stitching from the shoulder belt EM loop on both the Driver and Passenger seat belt assemblies.
* For 1995 models: Remove stitching from the shoulder belt EM loop on the Passenger seat belt assembly ONLY.
IMPORTANT:
Care must be taken when removing the EM loop stitching. The actual seat belt webbing material must not be cut. Remove all excess stitching from webbing when cutting is completed.
Stitching Removal Procedure:
Refer to Figures 3, 4, 5, 6
It is not necessary to remove the retractor assembly from the truck for this procedure.
1. Extend the seat belt from the retractor.
2. Remove the small staple retaining the plastic cover to the shoulder belt webbing by inserting a small flat blade screwdriver under staple and lifting it (Figure 2).
3. Slide the plastic cover back (Figure 3) to reveal the EM loop and Yellow Warning Label (Figure 4).
4. Using the seam ripping tool provided with this campaign (Figure 5), cut each stitch (Figure 4), and remove the thread from the three rows of stitching that make up the EM loop. DO NOT cut, tear, or snag the seat belt webbing material. If the webbing material has been cut or damaged, the retractor assembly should be replaced.
IMPORTANT:
The seam ripper is designed for the purpose of removing stitching. The ripping tool has a point at the tip that allows the tool to stretch/lift the stitch and apply force to allow the cutting edge of the tool to cut the stitch and not the webbing. The cutting edge of the tool is located in the center portion of the tool in the curved area. This allows the tool to cut the stitch properly. DO NOT pull up on tool while cutting, possible damage to the tool or possible injury may result. The tool should be pushed toward the stitch for proper cutting.
5. Remove the stitching from the yellow Warning Label and discard label. No replacement label is required.
6. Relocate the plastic cover back to its original position and fasten plastic cover to the webbing with a new cover retaining button (Figure 6). Push button through the hole created by the staple. If necessary, use a small pointed punch to create a hole in the cover opposite the staple hole.
7. Install Campaign Identification Label.