You need to make sure the dash LCD display that tells you what gear you are in is working. It's made by Actia and I'm on my third one.
Does it have Bosch brakes and, if so, has the brake recall be done?
The transmission came with Dexron III fluid that had to be changed every 25,000 miles or two years. I'd suggest switching to Transynd.
If the refrigerator is a Norcold 1200 you need to check if the safety recall was done on it.
What year were the tires manufactured? If over 7 years old you may want to replace them.
The 8.1 and Allison 1000 transmission combination is a very strong unit.
2004 Monaco La Palma 36DBD
Workhorse W22 8.1 Gas Allison 1000, 7.1 mpg
2000 LEXUS RX300 FWD 22MPG 4020 LBS
US Gear Brakes