Unexpected Activation of the Anti-Skid System
Suspension & Steering, August 3, 2011
RepairPal Expert Overview
Our Quick Take:
The anti-skid (stabilitrak) system warning light may not illuminate in the case of certain system sensor faults. A faulty sensor could cause unexpected changes in vehicle handling, which could result in a crash.
What Should You Do?
General Motors will notify owners of affected vehicles during August of 2011. If you are experiencing handling issues and don't receive notification, please contact your dealer. It's helpful to have your vehicle identification number (VIN) when you call.
The anti-skid (stabilitrak) system may have an incorrect calibration, which can cause the system not to properly detect a sensor malfunction. A malfunctioning sensor may cause the stabilitrak (ESC) to falsely activate, resulting in sudden changes in vehicle handling and deceleration. These unexpected changes in vehicle handling may cause a loss of vehicle control. Dealers will update the electronic brake control module (EBCM) software to correct this concern. The General Motors recall number is 11222.
Mfr's Report Date:
August 3, 2011
NHTSA CAMPAIGN ID Number:
NHTSA Action Number:
ELECTRONIC STABILITY CONTROL
Potential Number of Units Affected:
GM IS RECALLING CERTAIN MODEL YEAR 2012 BUICK LACROSSE PASSENGER VEHICLES MANUFACTURED FROM JUNE 9, 2011, THROUGH JULY 2, 2011, FOR FAILING TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 126, "ELECTRONIC STABILITY CONTROL SYSTEMS (ESC)." THE STABILITRAK SYSTEM HAS AN INCORRECT CALIBRATION THAT MAY CAUSE THE SYSTEM TO NOT PROPERLY DETECT IF A SENSOR WERE TO MALFUNCTION, AND THE WARNING LIGHT INDICATING THAT THE SYSTEM IS NOT OPERATING WOULD NOT ILLUMINATE, AS REQUIRED IN THE SAFETY STANDARD.
A MALFUNCTIONING SENSOR MAY CAUSE THE ESC TO FALSELY ACTIVATE, RESULTING IN SUDDEN CHANGES IN VEHICLE HANDLING AND DECELERATION, WHICH MAY CAUSE LOSS OF CONTROL, AND COULD RESULT IN A CRASH WITHOUT WARNING.
GM DEALERS WILL REPROGRAM THE ELECTRONIC BRAKE CONTROL MODULE FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING AUGUST 2011. OWNERS MAY CONTACT BUICK AT 1-866-608-8080.
GM'S SAFETY RECALL NUMBER IS 11222. OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO HTTP://WWW.SAFERCAR.GOV .
Recall data provided by the National Highway Traffic Safety Administration