Last updated on December 12th, 2019 at 12:08 pmHow to make a Complaint to Chevrolet Chevrolet operates an easy to follow complaints procedure. The first step is to call the complaints line on 800-222-1020 Mon–Sat, 8 a.m.–9 p.m. (EST) Sun, closed. They say the vast majority of complaints are successfully resolved at this stage. If yours