• Safe & Sound Class 2 circuitry will not disable vehicle data bus even if interface loses power.
• When OnStar is active, the OS-2 will keep OnStar on even when the key is removed and the door is opened. OnStar will turn off when the call is complete.
• OnStar active LED and Ignition on LED for visual indication.
• Provides +12v switched accessory output. No more searching for switched +12v in fuse box or kickpanel.
• Smart Sense Mute output to either mute the aftermarket radio or to turn it off when OnStar is active.
• Retains door chimes when used with optional CM1 chime module.
• New radio will operate with the vehicle RAP (Retained Accessory Power) system. The radio stays on after the key is turned off and stays on for aproximately 10 minutes or until a door is opened.

COMPATIBLE VEHICLES:
2000-2004 Chevrolet- Monte Carlo, Impala, Sunfire

2004 Chevrolet - Silverado, Venture

2002-2004 Chevrolet- Trail Blazer non-Bose, Envoy SLE

2004 GMC - Savana, Sierra

2001-2004 Pontiac - Montana

2004 Pontiac-Grand Prix GTP

2003-Bravada, Express

2005 Equinox is not supported at this time

Note 1:
1. These headunits have only 3 EQ settings. If the unit has only 5 or more EQ settings, then the OS-2BOSE is required. First half of 2004 have 5or more EQ settings and second half of 2004 use only 3 EQ settings.

2. The OS-2 does not retain the factory XM receiver, rear seat DVD or the rear center console controls. You will lose the XM/DVD and rear console option when the factory radio is replaced with an aftermarket radio.

3. If you are not retaining the Bose® amplifier, use this OS-2 interface instead of OS-2Bose interface. CM1 is also required if Bose amp is bypassed.


Note 2:
If you take your vehicle to the GM dealer to have it upgraded with a new software update, please remove this product prior to going to the GM Dealer. The reason is that the product does not go into offline mode which will show as an error to the scan tool the dealer uses.

Bulletin: Aftermarket radio used with either OS-2, OS-2BOSE or C2R-GM24 and AAI-GM24

Note to customers or customer's installer: When programming or re-flashing a vehicle's Body Control Module (BCM) or Powertrain Control Module (PCM), the factory fuse that powers the factory radio harness must be pulled from the vehicle fuse box before performing the reprogramming. Failure to discount power to or remove the new aftermarket radio and it's associated interface adapter OS-2, OS-2 BOSE or C2R-GM24 may cause programming errors and or render the vehicle's computer inoperative. Current products that are affected are: OS-2 with revision 1.2.11or lower, OS-2BOSE with revision 1.3.11 or lower, C2R-GM24 with revision 1.2.4 or lower and AAI-GM24 with revision 1.1.5 or lower.. Note to GM dealership: If this procedure is not done, the BCM, PCM or other computer modules will become PERMANENTLY inoperative when trying to program or re-flash new firmware using the TECH2. Replacing the module will be required, which will result in unnecessary costs to you and the owner of the vehicle.