The X3-GM12 T-harness connects the X-3 brain module to GM vehicles audio systems. Vehicle must have a Class 2 "RDS" factory radio with a 12-pin CD changer port, and either the factory XM tuner or factory external CD changer installed for the X-3 system to work.
For 1995-2002 GM vehicles without "Class 2 RDS" radios with a 9-pin data port, see X3-GM9 T-Harness.
IMPORTANT:This is not a stand alone device and must be connected to the X-3 module.
NOTE: Vehicles must have either the factory XM tuner or factory external CD changer installed for the X-3 system to work.
Specific Vehicle Application List:
Buick
2005-2007 Allure
2004-2005 Century
2005-2007 LaCrosse
2004-2007 Rainier
2002-2007 Rendezvous
Cadillac
2003-2006 Escalade/EXT
Chevrolet
2003-2006 Avalanche
2003-2005 Blazer
2003-2005 Cavalier
2004-2011 Colorado
2005-2011 Corvette
2003-2005 Express Van
2002-2005 Impala
2002-2003 Malibu
2003-2005 Monte Carlo
2003-2006 C/K Truck
2003-2005 S10
2003-2006 Silverado
2007 Silverado (Classic body style)
2004-2006 SSR
2003-2006 Suburban
2003-2006 Tahoe
2002-2009 Trailblazer
2005-2007 Uplander
2004-2005 Venture
GMC
2004-2011 Canyon
2002-2009 Envoy
2003-2004 Sonoma
2003-2006 Sierra
2007 Sierra (Classic body style)
2003-2006 Yukon/Denali/XL
Oldsmobile
2002-2004 Alero
2003-2004 Bravada
2002 Intrigue
2002-2004 Silhouette
Pontiac
2002-2006 Aztec
2002-2006 Grand Am
2004-2008 Grand Prix
2002-2007 Montana
2003-2005 Sunfire
2003-2007 Vibe
