PAC OS2 BOSE

OnStar® Volume control via factory steering wheel audio controls on selected vehicles*. Radio controls can be retained to control new radio by using PAC's SWI-X.

Unlike some other interfaces on the market, 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.

Retains door chimes when used with optional CM1 chime module. Also retains Vehicle Parking Assist chimes.

So universal it works with Premium Bose® or Standard Bose® sound systems.

WORKS WITH:
2003-2006 Cadillac - *Escalade, *Escalade EXT, *Escalade ESV
2003-2006 Chevrolet - Avalanche, Silverado, Suburban, Tahoe
2002-2006 *Trail Blazer w/Bose®
2003-2006 GMC - *Envoy, Sierra, *Sierra Denali, *Yukon Denali, Yukon SLT
2003 *Hummer H2
2004 - 2006 Hummer H2 (will need a CM1 to retain warning chimes)
2005 Equinox is not supported at this time

Note:
1. These headunits have 5 or more EQ settings. If the unit has only 3, then the OS-2 and CM1 are required. First half of 2004 have 5or more EQ settings and second half of 2004 use only 3 EQ settings.
2. The OS-2Bose® 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 the factory Bose® amplifier is not being used, use the OS-2 interface.
4. *These vehicles have a premium Bose® amp that only accepts 2 channel audio inputs. The aftermarket radio will not fade, however it will still continue to balance.
5. You may use this interface even if the vehicle does not have OnStar® but need to interface the Bose® amplifier.

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.