K 1500 Truck 4WD V8-305 5.0L (1988)
Figure 5
c. Drill rivet heads away using a 12.7 mm (1/2-inch) drill (Fig. 5).
Figure 10
BALL JOINT REPLACEMENT, UPPER & LOWER: 1988-1990 K TRUCK (Con't)
8.
Remove upper ball joint (Fig. 10, 115) from upper control arm (Fig. 10, 101). Rivets will remain in control arm.
NOTICE:
Do not damage upper control arm mounting surface when removlng ball joint or rivets.
a. Remove remaining rivet shanks flush with control arm.