See also:

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 ...

Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 ...

Heated and Ventilated Seats
The buttons are on the climate control panel. : Press to cool the entire seat. : Press to heat the seatback only. : Press to heat the seat and seatback. Press the desired button once for the ...