PAC OS2-BOSE ONSTAR INTERFACE (FOR GM BOSE -EQUIPPED VEHICLES)

REPLACES FACTORY RADIO WHILE RETAINING ONSTAR; PLUG-&-PLAY, NO CUTTING OR ;SPLICING INTO FACTORY PLUG; PACOS2/PACOS2 BOSE COMMUNICATE DIRECTLY WITH THE ONSTAR MODULE TO PREVENT FALSE ;TRIGGERING & ELIMINATING UNWANTED AUDIO NOISE; ON-BOARD AMPLIFIER WILL DRIVE TWO 4W SPEAKERS IN STEREO; USE WITH THE EXISTING FACTORY SPEAKERS OR EXTERNAL SPEAKERS; FOR 2003-2004 CADILLAC ESCALADE, ESCALADE EXT, & ESCALADE ESV; 2003-2004 CHEVROLET AVALANCHE, SILVERADO, SUBURBAN & TAHOE; 2002-2004 TRAIL BLAZER WITH BOSE; 2003-2004 GMC ENVOY, SIERRA, SIERRA DENALI, YUKON DENALI & YUKON SLT; 2003 HUMMER H2; 2004 HUMMER H2 (WILL NEED A CM1 TO RETAIN WARNING CHIMES) SUBCATEGORY2: INSTALLATION ACCESSORIES.