Interior Glass
To clean, use a terry cloth fabric dampened with water. Wipe droplets left behind with a clean dry cloth.
Commercial glass cleaners may be used, if necessary, after cleaning the interior glass with plain water.
Notice: To prevent scratching, never use abrasive cleaners on automotive glass. Abrasive cleaners or aggressive cleaning may damage the rear window defogger.
See also:
Satellite Radio Antenna
The XM Satellite Radio antenna is located on the roof of the vehicle.
Keep the antenna clear of obstructions for clear radio reception.
If the vehicle has a sunroof, the performance of the XM system ...
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
XM Radio Messages
XL (Explicit Language Channels): These channels, or any others, can be blocked at a customer's request, by calling 1-800-929-2100 in the U.S. and 1-877-438-9677 in Canada.
XM Updating: The encryption ...