I purchased a 2003 Holiday Rambler Vacationer with a W22 Workhorse chassis and Chevy 8.1 engine. I have always had Ford 460 or V10 engines, so I am not real familiar with this one, so I seek your adv...
Even an eng with a ping sensor can ping. It only has a certain amount of adjustment it can do. Bad fuel, extreme oil burning, excessive eng temp, etc. will still make it detonate.