A 2003 Monaco Signature will have an HWH air ride system with auto leveling. It has 10 air bags and 10 shocks mounted out board on the chassis. The control pad for the HWH system is on the drivers left side console and you can easily reach down and raise the chassis 4-6".
You can also raise the tag axle if necessary, (but this puts more weight on the rear drive axle). I usually raise the tag when backing into a tight spot.
I think you'll find that this coach will go into almost any tough spot or slope better than almost any other big diesel coach.
I hope you are prepared to work on this thing! There are lots of great systems on these coaches but at this point they need some TLC.
Best of luck!
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV