my 2006 burb doesn't have emblem on side by rear door why?

Hello,
This may have been an oversight on your car. You may want to try calling the dealer from whom you bought it and finding out why there is not one there.
Best of luck!
CarGrrl

The manufacturer (Chevrolet) made 3 trim levels, LT, LS and Standard.  The standard has no LS or LT on "C" post behind the rear door.  The package of options can be ordered separately of the trim level.  EX.  My 2004 has LEather Seats, 6 way power seat for driver only, non-heated seats, sun roof, rear heat/AC, OnStar, and premium sound, but is not an LS nor an LT.  And it does not come withthe 5.7 litre engine.