[Hutch]

I read an article that stated that the Gmc Plaid seat option had the stripes in the plaid seats laid out different

Another example of General Motors saving production costs: On the 1972 GMC only, the Chevrolet Highlander seat material was an option on their Wide-Side (fleetside) and Suburban. To give this seat insert a different appearance, than the Highlander, it appears the material was turned 90o so the stripes ran the opposite direction.