New for 2011
The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says provides better voice recognition. GM also said they have worked to cut down on the amount of wind noise occupants hear.
See also:
Three-Way Calling
Three-way calling must be supported on the cell phone and enabled by the wireless service carrier.
1. While on a call, press .
2. Say “Three-way call.” 3. Use the dial or call command to dial th ...
Battery Replacement
Replace the battery if the REPLACE BATTERY IN REMOTE KEY message displays in
the DIC. See ЃgReplace Battery in Remote KeyЃh under Key and Lock Messages on page
5.29.
The battery is not recharge ...
Center High-Mounted Stoplamp (CHMSL) and Cargo Lamp
To replace one of these bulbs:
1. Remove the two screws and lift off the lamp assembly.
A. Cargo Lamp
B. Center High-Mounted Stoplamp (CHMSL) Bulb
2. On the reverse side of the lamp assembly, r ...





