Your Burb's owners manual will tell that a WDH is recommended.
I own a 2007 Avalanche and its manual recommended one to tow my Roo and the Avalanche is basically the same vehicle as the Burb.
Love my Equal-i-zer.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC