GM’s $60B Automation Push: Rise and Fall of 1960s‑1990s Robotics

George C. Devol Jr. patented the first robot arm in 1961, calling it “Universal Automation.” The Unimate stored up to 200 sequential movements on drum memory, allowing it to repeat tasks without human intervention. Joseph Engelberger championed the technology as a way to remove people from “boring, dirty, and dangerous” jobs, and he co‑founded Unimation to commercialize the idea.

Early Adoption and Challenges

General Motors installed its first Unimate in a die‑casting line, where the robot waited for the machine to open, extracted the hot part, inspected it with infrared, and dunked it in a water bath. If the inspection failed, the robot alerted a human operator. The early system proved reliable for repetitive motion but required human oversight for quality decisions. GM soon shifted focus to spot‑welding because the task’s repetitive, forgiving geometry matched the robot’s strengths.

The Import Fighter Era

Facing a flood of Japanese imports, GM launched the Chevrolet Vega and equipped the Lordstown, Ohio plant with 26 Unimate spot‑welding robots. Management set an aggressive quota of 100 cars per hour, but the robots could not increase speed because workers still had to clamp parts manually. Labor tensions erupted in a 1972 strike that lasted 18 days and cost GM $141 million, exposing the gap between the “lights‑out” vision and on‑the‑floor reality.

The Electric Revolution

In 1973 ASEA (now ABB) introduced the IRB‑6, an electric robot that used servo motors and an Intel 8008 microprocessor for higher precision. The shift from hydraulic to electric actuation promised smoother motion and easier programming. Unimation struggled to adapt its product line, and GM began looking elsewhere for electric solutions, weakening its relationship with the original robot supplier.

The GM‑Fanuc Partnership

GM formed GMF Robotics with Fanuc in 1982, tapping Fanuc’s CNC expertise and the leadership of Seiuemon Inaba, the “Emperor of Robots.” By 1984 GMF captured 26 % of the U.S. robot market and became the country’s largest robot company. The partnership aimed to realize a “lights‑out” factory at the Hamtramck plant, installing 260 robots to automate welding, painting, and material handling.

Falling Short at Hamtramck

The Hamtramck rollout suffered “teething troubles.” Painting robots mistakenly sprayed each other, vision systems shattered windshields, and automated guided vehicles moved too slowly to keep up with production flow. These technical failures eroded return‑on‑investment calculations and forced GM to confront the limits of its automation strategy.

The Aftermath

GM spent an estimated $60 billion on technology and capital to automate its factories, yet the investments failed to deliver the expected productivity gains. By 1980 the company recorded its first unprofitable year since 1921, losing $763 million. In response, GM abandoned the “lights‑out” dream and adopted a Toyota‑style lean manufacturing model through the NUMMI joint venture, emphasizing flexible workcells and human‑machine collaboration over wholesale robot domination.