Electric Power Steering Failure

What NHTSA is examining

ODI has received 846 complaints and GM identified 3,489 reports alleging sudden loss of steering power assist in model year (MY) 2004 through 2007 Saturn Ion vehicles manufactured and sold by General Motors Corporation (GM).Sixteen of these complaints alleged that the EPS warning lamp had illuminated before or during the loss of steering assist and the increased steering effort contributed to a crash. Two of the GM crash claims indicated that the driver was injured in the crash. In a previous Preliminary Evaluation PE10-005, ODI investigated the sudden loss of power steering assist in MY 2005 through 2010 Chevrolet Cobalt vehicles. In May 2011, in response to an ODI information request letter for RQ10-004, GM provided ODI with complaint, warranty and EPS system information related to EPS loss of assist for the Saturn ION and Peer vehicles Pontiac G6 and Chevrolet Malibu. In that response, GM indicated that the EPS system used in the subject vehicles was the same as that used in the MY2005 to 2010 Chevrolet Cobalt and Pontiac G5. In March 2010, GM recalled approximately 1.05 million Chevrolet Cobalt and Pontiac G5 vehicles (NHTSA recall no. 10V-073) to correct a defect with the EPS assist motor. The defect identified was described as a buildup of brush debris mixed with oily material on the EPS electric motor armature which causes the motor to stop functioning; the same problem identified in the current subject vehicles.ODI has duplicated this failure in both a Chevrolet…

Vehicles under investigation