Few days ago I presented the Sheriff Hopper’s cabin from Stranger Things TV Series (netflix). In the little diorama there was also the iconic Chevrolet Blazer owned by the Hawkins Police Department and driven by Chief Jim Hopper. Here it is in plain sight.

The one used in ST is the model year ’80 because they were the only year Blazer to feature single rectangular headlights. Color scheme is amazing: dark tan plus tan, perfect for LEGO color palette.
The Blazer was the smallest full-size SUV version of the Chevrolet C/K family, and it was introduced in 1969.
These things were plenty common in the ‘80s, and that basic platform was probably shared by many municipal trucks and Suburbans, so maintenance would be easy.