2 ResultsMost relevantConsidering purchasing a 2003 Monaco Diplomat 40 PWD...My question has to do more with known issues in that model and year coach. Slide issues, trailing arm issues, engine issues, electrical, etc. It has a Cummins 8.9 litre 330 HP diesel engine with t...View results from repliesUsed Class A's...iles, 10 years old or newer, you find a bunch of units priced in the mid 30's. I am sure I can buy a lot of problems but what should I look for (and what should I avoid)? I should mention that I...View results from replies