K 1500 Truck 4WD V6-262 4.3L (1991)
The output shaft journal must be machine finished in order to install the new sleeve. (Figure 4)
1. Remove propshaft from transmission output shaft.
2. Remove transmission extension assembly.
3. Install the new service package onto output shaft journal.
4. Lightly coat splines of transmission output shaft with grease (P/N 12345879) to completely cover the entire spline.
5. Reinstall extension assembly.
6. Apply grease (P/N 12345879) to slip yoke of new propshaft with brush or swab, so as to completely cover the entire spline with a light coating
of grease.
7. Reconnect new propshaft.
Service Manual Reference:
Refer to the Unit Repair Service Manual Section 7 for proper replacement procedures for Output Shaft Assembly and appropriate service manual section
for propshaft replacement.