Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception.
Cellular reception is required for OnStar to send remote signals to the vehicle.
See also:
Setting the Power Liftgate 3/4 Mode
To change the liftgate stop position.
1. Turn the liftgate switch to either the MAX, or the 3/4 mode position and
power open the liftgate.
2. Stop the liftgate movement at the desired height by p ...
Portable Audio Devices
Some vehicles have a 3.5 mm (1/8 in) auxiliary input and a USB port located
in the center console.
External devices such as iPods®, laptop computers, MP3 players, CD changers,
and USB drives may ...
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 ...