Probally a dumb question, but I have to ask. would a GPS not be more
accurate than a DG ?

Yes, but many autopilots are "slaved" to a "heading bug" on your DG. This
set-up pre-dates GPS by decades, and is much cheaper than the (seemingly
simpler) GPS-autopilot connection.

Again, there is no logic to this -- but what else is new?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"