It uses Advanced Inertial Guidance System with manoeuvring trajectory.

The brain trust that brought the world some of the most significant scientific breakthroughs--the first electric self-starter, first moon car and the aircraft inertial guidance system used on the Boeing 747, among other developments--had become a victim of downsizing as the automaker's market share began to tumble and leaders began to chip away at what were considered unneeded costs.

The addition of an inertial guidance system coupled with a Global Positioning Satellite system has improved the accuracy of the rocket to significantly less than 5 meters.