That's a 1 Ton Built in Kansas City
L = 1 Ton
53 - Year built
K = Kansas City Plant
044422 = Serial # for that plant (First built would be 001001)
The body looks like a suburban, but Chevy didn't produce those except on 1/2 ton chassis. It was probably built on a 3805 (1 ton) panel and the windows added by the aftermarket body builder.
Reference Material
HERE
