I would argue as well, did they show you the facts behind the mystery 28000 miles rule, i bet if you had done 28000 they would only be covered for 26000, I smell a distinct wiff of bull s**t from another dealer too quick to thrust the card machine under your nose for service payment...Edited by: SJG
Warrenty is contact between you & vx (GM). Your first year is unlimited mileage then the next two is up to 60,000 miles are 3 years which ever comes first. In the small print it states Any repairs must be undertaken by an authorised dealer to be valid. Was the garage you used one of these?