Two problems related to door latch have been reported for the 2000 Chevrolet K1500. The most recently reported issues are listed below.
Door latch/lock would not hold the door closed. It was rusted to bad.
The rear doors will not latch if the vehicle is exposed to temps below 45 degrees, the front doors are secured to the rear doors, so if the rear latch won't latch the front doors may open, the dealer can not remedy the problem.