A well-documented and increasingly widespread problem related to excessive rust on the frames of many vehicles in this particular model year range. The cause of the problem appears to stem from a poorly applied or degrading wax coating, which, over time, peels off, leaving the frame exposed to corrosion, particularly in harsh weather conditions such as heavy snow and road salt exposure. The result is catastrophicâ’my Silveradoâs frame and crossmembers are now severely compromised, and the integrity of the vehicle is in question.