Another Computer Software Glitch as GM Recalls 2011 Buick LaCrosse, Cadillac SRX Models for Failed Defrosters

The ongoing use of electronic controls is vehicles continues to challenge engineers and technicians.

General Motors is recalling 2011 model Buick LaCrosse sedans and Cadillac SRX crossover models because the software in the electronic climate control module may prevent adjustment of  the heating, ventilation, and air conditioning (HVAC) system settings. When this happens, the driver will not be able to control the heating, cooling, and ventilation for the vehicle. Decreased visibility can result in an accident.

Defrosting is required by U.S. Motor Vehicle Safety Standards.

GM Dealers will reprogram the confused computer with a process that will take about half an hour. 

The HVAC safety defect recall is expected to begin on or before March 11, 2011. Owners may contact Buick at 1-866-608-8080, Cadillac at 1-866-982-2339 or at the owner center at about recall number 11057.

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

About Kenneth Zino

Ken Zino is an auto industry veteran with global experience in print, broadcast and electronic media. He has auto testing, marketing, public relations and communications expertise garnered while working in Asia, Europe and the U.S.
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