Sponsored Links Among the many intriguing things about the Chevy Colorado ZR2-based GM Defense Infantry Squad Vehicle (ISV) is a feature called Combat Mode, which is designed to give soldiers the best chance to get out of a critical situation and to save their lives. Essentially, Combat Mode keeps the vehicle running when other safety systems are trying to shut it down. “On the ISV, we kept alive a lot of systems from the production model [Colorado ZR2], like if it overheats and what you would consider limp home mode and things of that nature,” Mark Dickens, architectural chief engineer f...