Technical bulletins. ORD FE 21. Truck, 2½-ton, 6×6 (GMC model CCKW-352 and 353 and AFKWX-353), truck, 2½-ton, 6×4 (GMC model CCW-353), installation of brake and clutch pedal shaft lubricating fitting; Jan. 6, 1945. n. p.