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 |  Aug 12 2011, 5:00 PM

The National Highway Traffic Safety Administration has issued a recall for 4,077 Buick LaCrosse sedans after finding issues pertaining to the electronic stability control system. The issue only pertains to 2012 model year cars, built between June 9 and July 2.

According to the recall notice, “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”.

If the ESC malfunctions, there is a possibility the system could falsely activate, resulting in sudden changes to the vehicles driving dynamics. If this were to happen, there is a higher probability in loss of driver control, which could lead to a crash.

The recall will begin towards the end of August, and affected vehicles will have the electronic brake reprogrammed free of charge.

 |  Jun 22 2011, 2:26 PM

As is happening across the General Motor’s lineup, the Buick LaCrosse is getting a powertrain update. The previous 3.6-liter V6 is being replaced with a new LFX mill which will be available at no-additional-cost on select trim levels instead of the standard 2.4L four-cylinder engine with eAssist. The new engine features variable valve timing and will crank out 303-hp on the front-wheel drive LaCrosse (an all-wheel drive version will also be available). This is up 23-hp. Torque also goes up, by 5 lb-ft to 264 lb-ft without affecting fuel efficiency, allowing the LaCrosse to retain a 17 mpg city and 27 mpg highway rating.

“The changes we’ve made to the 3.6L V-6 represent greater refinements to an already well-balanced package,” said Tom Sutter, global V-6 chief engineer. “We are using the latest designs, lighter-weight components and enhancements to improve the engine’s performance, efficiency and durability.”

This new V6 will use several light weight components to help maintain optimal fuel efficiency while boosting horsepower. The new fuel pump and isolated fuel rail will make the car quieter during operation and the direct injection will also allow for a reduction of emissions. Buick has made the engine greener particularly with cold starts, where hydrocarbon emissions have have been reduced by twenty-five percent because of upgraded fuel equipment.