10 = 1/2T, 1 = 114" short bed, 9 should indicate engine
see here, GMCs are confusing smile

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics