General Motors has issued a technical service bulletin (TSB) for certain examples of the 2020 Chevy Blazer crossover due to a problem related to the trailer hitch cover.
The TSB document indicates the rear trailer hitch cover in affected vehicles may be warped and loose. This could cause a rattling noise to occur in the rear of the vehicle and eventually cause the trailer hitch cover to come loose.
Dealers will inspect the rear trailer hitch cover on affected Chevy Blazer models and replace the part if necessary. These repairs will be performed at no cost to the vehicle’s owner. The trailer hitch cover is the small removable section of plastic in the rear bumper that covers the trailer hitch receiver and is a cosmetic piece only.
GM estimates there are only 2,201 vehicles affected by this problem that may require parts to be replaced. All of these vehicles are located either in the United States or Canada. The TSB document indicates some vehicles may not require the repair as long as the trailer hitch access cover can sit flush with the mounting points in the rear bumper.
Due to the small number of vehicles that are anticipated to need this repair and the limited initial parts availability, the automaker is encouraging its dealers not to order rear trailer hitch access hole covers for the 2020 Chevy Blazer as shelf stock. This should take some stress off of the supply chain while the automaker works to get more parts to dealers.
This TSB was issued in December 2020 and carries the campaign number N202318400. Only 2020 model year Chevy Blazer models are affected by this problem, so 2021 Chevy Blazer don’t need to concern themselves with this particular TSB.