6.2 4door whats it worth

this is my first post been a member for about a month.but been to busy reading all the good info.i just found a 1986 chevy 4 door 1ton 4wheel drive.fully loaded except cruise doesn't work .but truck looks to be in good shape.it has a six in lift with 35s tranny is a four speed stick .90,000 original miles what is it worth?and any ideas on whats wrong with the cruise ?any common problems.sorry don't have any pics.and is this year of motor good. thanks for any comments and ideas about the cruise.