I know it's been awhile since I've been on the forum , i have a 86 although it was built in late 85. I pick up a new owners manual from Ponti World in the Gong cost around $50 give or take a few $ also got the 1986 GM maintance Schedule as well, both were still in the plastic wraping. Also have the 1986 shop manual over 500 pages give or take a few If yours is TPI this is the manual for you, if you don't have one. But I am not sell mine.