The owner manual is pretty explicit about not towing with any wheels on the ground, so your warranty would be void as far as transmission and drive train damage if you did this. Doesn't seem like a good bet to me. For the edification of others, here is what billandjan's owner manual says:
Notice: Dolly towing or dinghy
towing the vehicle may cause
damage because of reduced
ground clearance. Always put
the vehicle on a flatbed truck
The vehicle was neither designed
nor intended to be towed with any
of its wheels on the ground. If the
vehicle must be towed, see “Towing
the Vehicle” earlier in this section.
Remco simply says "Too new - no information".
Do you know what transmission it has? A couple of the GM 6 speed automatics are towable but others are not, e.g. the Cruze was recently found to be not towable even though the engineers had stated it was.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL