GMT400 is my 1996 Suburban's platform...see sig for a pic
Next or NBS to mine is GMT800
Next is NNBS to mine is GMT900
GMT800 has one of the worst receiver designs I've ever seen and should be
replaced with a traditional design receiver
GMT900 has the receiver designed into the bumper system (IMHO, think marketing
forced engineering to 'hide' the receiver so that it doesn't show as much). Since
part of the bumper...it now also has crash crumple responsibilities. Crumple
meaning it is designed to 'crumple during a crash...so there are stress raisers
designed into the bracket between the frame and the bumper cross member (receiver)
That then limits the tongue weight (with WD) to 1,000 lbs
Here is a good site that explains the differences between the various models
of today. Suburban has the longest continuous running model badge in automotive
history. +80 years and is recognized world wide. Other GMC SUV's are also Suburbans
but they changed the name for some reason. Am glad my GMC Suburban is labeled
as a Sub.
Yukon XL is a Suburban. Denali is a trim level for GMC Yukon XL's. Caddy has
the Escalade and is a re-badged Suburban
The AWD (all wheel drive) versions uses a vicious third member (the diff inside
the transfer case) and has reported issues towing heavy.
Chevrolet SuburbanGM GMT platform