See also:

The Elephant
GMC has long combined ruggedness and elegance to good effect — consider the Sierra pickup and Acadia crossover, for example. But the Terrain is one odd duck. GM says it shares just a few body pa ...

OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview on pag ...

Emissions Inspection and Maintenance Programs
Some local governments may have programs to inspect the on-vehicle emission control equipment. For the inspection, the emission system test equipment is connected to the vehicle’s Data Link Conn ...