Chevrolet vehicles are designed and built to resist corrosion. All body and sheet metal components are warranted against corrosion for the first 3 years/36,000 miles and rust-through protection lasts for the first 6 years/100,000 miles, whichever comes first. Application of additional rust-inhibiting materials is neither necessary nor required under the Sheet Metal Coverage. Chevrolet makes no recommendations concerning the usefulness or value of such products. Application of after-manufacture rustproofing products may create an environment that reduces the corrosion resistance built into your vehicle. Repairs to cover damage caused by such applications are not covered under your New Vehicle Limited Warranty. See your Chevrolet dealer for terms of this limited warranty.