OnStar

See also:

Erasing Speed Memory
The cruise control set speed is erased from memory by pressing the button or if the ignition is turned off. ...

Rear Vision Camera (RVC)
The vehicle may have a Rear Vision Camera (RVC) system. Read this entire section before using it. The RVC system can assist the driver when backing up by displaying a view of the area behind the ...

Powertrain
The XLR's Northstar V-8 VVT is a 90-degree, DOHC, four-valves-per-cylinder engine featuring an aluminum block and cylinder heads, and a valvetrain configuration with roller finger followers. The e ...