I have a 1996 Winnebago Vectra GT on a P30 chassis with the 454 L19 engine. I got my 1995 PG & P3 Chassis Service Manual and 1995 PG & P3 Chassis Driveability, Emissions, and Electrical Diagnosis Manual on eBay for around $40. Both manuals were in EXCELLENT condition and it was money well spent. If you would like send me a private email I will scan the cover of my manuals so you can see them because it makes it much easier to know what you are looking for if you see a picture.
2013 Winnebago Aspect 27K
Lives in South Western Idaho