A classic truck, the 4th generation of Chevy C/K trucks like the C1500, K1500, also known as the GMT 400 or Chevy OBS (Old body style or original body style) truck, consists of a wide range of years spanning from 1988 to 2002, and with such a large range of years has come a few common problems owners have reported. We cover the top problems of this generation like the door handles, the ABS brake system, and the fuel pump, which also applies to its sister GMC C/K trucks. Find out their symptoms, causes, and fixes with these tips from our expert mechanics.