One problem related to side/rear glass has been reported for the 1998 Chevrolet C1500. The most recently reported issues are listed below.
Passenger's side rear vent window is angled or improperly installed. The rear of the window is sticking out approx 3/16-5/16 of an inch passed the body. It should be flushed with the body. Consumer had repairs done on December 18, 97, when the paint inside and around the window was chipped and scratched. When consumer received vehicle back. The vent window is still not properly installed. Consumer will not drive vehicle in rain to test for leaks, dealer wants to put in new window. Also the there are 7 other dealerships and 55 other same make, model, year vehicles, and 39 of the vehicles have same problem. Also the rocker panels are not completely painted.