Found It, What a joke. Buying in 2021 LOL. You can keep it.

If KBB says your truck is worth 51-58K, but the dealer only wants to give you 38K, for Pete's sake sell it yourself if you think you can get 51-58K.

Of course, do bear in mind the old cliche "the only 'book' that ever actually bought a truck is a checkbook!"

Also remember, dealers base their appraisals on actual auction results, not on KBB's mathematical formulas.