Darrell,
The bumpers on the Suburban, front and rear, are the same (same also as the front of a pickup). The front and rear brackets, however, are different, and I'm pretty sure (someone will confirm this) that the rear brackets of the Suburban are NOT the same as the rear brackets of the pickup.
The running boards are the same as those on a 3100 (1/2 ton) pickup.
Be careful of aftermarket bumpers (see my recent post).
Jim
