Correction #1: I think mine came with an undercoating.
My Suburban had undercoating when I bought it in 1971. I can find no documentation that states that GM put this on at the factory. I doubt that the original owner put it on, but the dealer might have put it on.
Correction #2: Third try lucky: the Factory Assembly Manual shows the undercoating locations.
Last edited by tclederman; 09/05/2018 8:07 PM. Reason: corrected (twice) - crossed-out statements
