K 2500 Truck 4WD V8-379 6.2L DSL (1988)
Figure No. 1
Some 1988-1990 C/K Trucks may experience a condition where the, door's secondary weatherstrip (see figure 1) is loose or pulled away from the door
opening. In order to correct this condition, a newly designed weatherstrip has been released (P/N 15667234).