See also:

Wiper Blade Replacement
Windshield wiper blades should be inspected for wear or cracking. See Maintenance Schedule on page 11‑3 for more information. Replacement blades come in different types and are removed in diff ...

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. ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment on page 9‑112. Added electrical equipment ma ...