Some of the above statements about frames not being painted are blanket statements that no GM truck frames were painted. If anyone has Chevrolet truck documentation, it would be nice to see what was done with those "pickled" frames (or to the frames made out of "pickled" metal).
Is there any sense in posting documentation about any GM truck frame painting?
GMC Painting Specifications documentation is provided on Rob English's oldGMCtrucks.com
"Undergear" ("frames, axles, springs, etc, but not wheels") was/were painted black on 1949 New Design GMCs.
"Undergear" (whatever that was in these years - "all other areas not specifically described") was/were painted black on 1954 New Design GMC trucks (and described with the same words for 1958 and 1959 Blue Chip GMCs).
In 1960, frame and running gear were also specifically described as being painted black.
