One problem related to frame rust has been reported for the 2002 Nissan Frontier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Nissan Frontier based on all problems reported for the 2002 Frontier.
While having minor cosmetic repairs done, our [reputable] body shop repairman pointed out that the front radiator support frame is completely rusted through. Everything else on this truck is solid. I am meticulous about it. There is obviously some sort of defect on this area for it to be 90% deteriorated! the slightest touch causes it to crumble. . . In the past, even Toyota has stood behind their vehicles with corrosion issues. . . I would certainly hope Nissan could look into this the same way. . . Its a real shame that I can only see another year maybe before my radiator falls out and causes something much worse. . .