GMC Sierra 1500 Classic also has dual-stage frontal air bags (not available on 1500HD Crew Cab, 2500HD and 3500 Series models) for supplemental protection for front seat passengers. Dual-stage frontal air bags are designed to help reduce the risk of air bag-induced injury. When the air bag system's control unit detects an impact, it determines whether the crash is severe enough to trigger a deployment, and whether the primary amount of inflation is sufficient. The primary stage alone will deploy in most frontal impacts requiring the supplemental protection of an air bag, while a secondary stage is designed to deploy in more severe frontal collisions.

GM's OnStar safety and security system is available with the OnStar Plus Package, which is available on SLE and SLT light duty models. In the heavy duty range, OnStar is available on SLE and SLT 2500 HD and 3500 models. OnStar is standard on Sierra Classic Denali. OnStar-equipped GMC Sierra Classics feature OnStar dual-mode (analog-digital) equipment. OnStar's digital equipment also includes enhanced hands-free voice recognition capabilities including more intuitive continuous digit dialing and improved voice recognition accuracy. OnStar is the leading provider of in-vehicle safety, security and information services in the United States and Canada . Using the GPS satellite network and wireless technology, OnStar features core safety services and OnStar Hands-Free Calling that allows drivers to make and receive voice-activated phone calls using an externally mounted antenna for greater reception.

Additional safety and security systems include electronic traction control on 2WD Sierra 1500 Classic models to enhance handling and response on models equipped with a V-8 engine, automatic transmission and locking rear differential. All models come standard with PASSLock II theft deterrent system, and a driver information center that monitors and reports on numerous vehicle system functions.



GMC Sierra Classic 2007 Entertainment options

Numerous entertainment systems on GMC Sierra Classic 2007 - from available Bose sound systems to a Panasonic DVD passenger entertainment system - add to Sierra Classic's comforts. XM Satellite Radio is available. On Crew Cab models, available rear-seat audio controls allow second-row passengers to enjoy a separate audio source from front-seat occupants.


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