The R/V 3500 Series was built by GMC.
R/V 3500 Series answers
When did GMC stop making the R/V 3500 Series?
GMC stopped production on the R/V 3500 Series in the 1991 model year. GMC produced the R/V 3500 Series for 4 years.
What years did GMC make the R/V 3500 Series?
The GMC R/V 3500 Series was produced from 1987 to 1991.