FastOrange
OBSless
Some 1500 '99s are GMT 400s. The 2500 and 3500 trucks went to 2000, but I bet a few might of made it to be '01s. The 3500 HD trucks went to 2002, and toward the end had 8.1L motors.
Also, the '94s are the first ones to have 3rd brake lights and '94 was also the year the grilles changed.
3/4ton's went till '02, i looked at a 2002 OBS CCSB last year at GM.