1997 GMC K1500 User Comment / Complaint

I received a recall notice for my 1997 gmc suburban. the campaign number is 03023. the defect was related to the windshield wiper motor stopping which has recently happened to us during heavy rains. when i brought the vehicle to the dealership (tucks trucks in hudson ma), they refused working on the vehicle as the gm system showed a campaign status as "closed". i contacted gm and they said they would look into it. in the mean time i have wipers that stop working intermittently during rainstorms. i am curious to know how many of these campaigns are closed with no reason listed as mine is.