Boyer began his GM career in 1974, as a co-op student and has held several senior engineering, safety and process leadership positions, including the role of a total vehicle integration engineer
. His most recent position since 2011 was Executive Director of Engineering Operations and Systems Development.
According to the Avalanche's total vehicle integration engineer
, Rick Gjestvang, "The challenge was to make a door that was as thin and strong as possible and would give you a flat floor." GM's engineers knew that a midgate made entirely of steel would be too heavy for a customer to easily raise and lower, so they utilized the institutional knowledge gained through the company's composite pick-up box program to come up with something lighter.