End Gate Lock Cylinder - Rattles
Number: 91-507-10Section: 10
Date: AUGUST 1992
Corporate Bulletin No.: 261003
ASE No.: B1
Subject:
END GATE LOCK CYLINDER ASSEMBLY RATTLE
Model and Year:
1982-91 S/T TRUCKS
Some owners of 1982-1991 S/T utility vehicles may experience a rattling sound emanating from the rear of the truck. This condition may occur if the end gate lock cylinder assembly is loose.
To correct this condition, it is necessary to bend the ends of the spring within the lock cylinder assembly eliminating any clearance between the pawl assembly and cylinder housing.
SERVICE PROCEDURE:
1. Open the end gate to the horizontal position and remove the inner trim panel.
2. Remove the end gate inner panel reinforcement from the end gate (Figure 1, Item 1).
3. Disconnect the end gate lock rods (Figure 2, Items 1 and 2).
4. Remove the lock cylinder retainer (Figure 3, Item 2).
5. Working through the access hole, remove the lock cylinder and gasket (Figure 3, Items 4 and 3) through the outer panel.
6. Remove the spring (located on the lock assembly) and carefully bend the spring ends just far enough to eliminate any clearance between the lock pawl assembly and the lock cylinder housing (Figure 3, Items 6 and 4).
Note:
If the spring breaks while bending, it will be necessary to replace the lock cylinder assembly
7. Reinstall the spring in the lock assembly. Next, shake the assembly to check for looseness. If loose, replace the lock cylinder assembly.
8. Reinstall the gasket, lock cylinder and retainer (Figure 3, Items 3, 4 and 2).
9. Reconnect the end gate lock rods (Figure 2, Items 1 and 2).
10. Reinstall the end gate inner panel reinforcement to the end gate (Figure 1, Item 1).
11. Reinstall the inner trim panel.
WARRANTY INFORMATION
For vehicles repaired under warranty use:
Labor Op:
B5810
Use applicable labor time guide for labor hours.