The Escalade is now the most likely vehicle to be targeted by robbers, according to the Highway Loss Data Institute. The study was based on insurance claims made for model years 2008 through 2010.
The luxury SUV, which starts at more than $63,000, is six times more likely to be hit by thieves than the average vehicle, and its overall theft losses are more than 10 times as large.
General Motors Co. said it's trying to make the Escalade harder to steal. The SUV currently includes a system to prevent the vehicles from being hotwired and a steering column lock that makes it more difficult for thieves to push the vehicles away or load them on to flat-bed trucks.
In addition, the 2012 Escalade will include sensors that set off an alarm when they detect a change in angle that would occur if the vehicle is being towed or being jacked up, along with sensors that sound alarms when windows are broken, a new wheel lock system and an improved steering column lock, GM said.
In second place among the most stolen vehicles came the Ford F150, followed by the Chevrolet Silverado 1500 crew cab.
The Associated Press contributed to this report.