291186P 6 Pak Chip | Auto Transmission w/ Overdrive

Give your GM car, truck or SUV multiple personalities with the push of a button! The JET 6-Pack features 6 uniquely different programs that easily change your engine’s performance to match your driving style from all out performance to gas saving economy mode. The 6-Pack also doubles as a security device with a program that prevents the vehicle from being started by sending no fuel to the injectors.        Installation Instructions