One problem related to frame rust has been reported for the 1998 Chevrolet S10. The most recently reported issues are listed below.
The contact owns a 1998 Chevrolet s-10. The contact took the vehicle to his mechanic and was informed that the mainframe was rusted very badly. The dealer wants to charge $100 for diagnostic testing. The contact informed the dealer that his mechanic already diagnosed the issue and will not pay for a diagnosis. The failure mileage was 70,000. Updated 03/09/09. Updated 3/5/09 updated 03/12/09.