Condition- new. The OTC GM PFI Noid-Lite Fuel Injector (7602) is a simple yet essential tool for diagnosing electrical issues in GM PFI (Port Fuel Injection) systems. It's designed to quickly and easily determine if an electrical signal is present at a fuel injector. Quickly check for electrical signal presence at fuel injectors. Plug the Noid-Lite into the fuel injector connector and crank the engine.
