One problem related to speed sensor has been reported for the 2005 Buick Terraza. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Buick Terraza based on all problems reported for the 2005 Terraza.
Randomly, while driving the abs system activates the brakes, pulling the car to one-side. If my memory serves me correctly, it pulls to the right. After this happens, the car's "traction control active" message appears on the instrument panel. Parking the car, turning it off, and restarting the car causes the message to go away. This has happened about 4 times in the past 3 weeks at speeds varying from 5-35 miles per hour. I fear that it could be potentially dangerous if this were to happen at higher speeds. . The car has been checked, prior to this incident, by an ase certified shop and both front wheel hubs have been replaced within the past 18 months, which have integrated wheel speed sensors. I have read that most shops have been unable to pinpoint any reason for this problem, but I do plan to have my mechanic investigate and see if the computer is reporting any error codes.