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Powertrain details
The GMC Sierra All Terrain HD concept is propelled by the new, production 6.6L Duramax turbo-diesel V-8 and Allison 1000 six-speed automatic transmission powertrain combination offered in the 2011 ...

Braking in Emergencies
ABS allows the driver to steer and brake at the same time. In many emergencies, steering can help more than even the very best braking. ...

Steering in Emergencies
• There are some situations when steering around a problem may be more effective than braking. • Holding both sides of the steering wheel allows you to turn 180 degrees without removing a hand. ...