This Package Fits The Following Vehicles: 
CADILLAC
2015-2018       ESCALADE
CHEVROLET
2016-2018       CAMARO
2015-2018       COLORADO
2014-2019       CORVETTE
2018       EQUINOX
2014-2018       SILVERADO
2015-2019       SILVERADO HD
2015-2018       SUBURBAN
2015-2018       TAHOE
2018-2019       TRAVERSE
GMC
2018-2019        ACADIA
2015-2018       CANYON
2014-2018       SIERRA
2015-2019       SIERRA HD
2018       TERRAIN
2015-2018       YUKON
2015-2018       YUKON XL
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PAC AP4-GM61
FACTORY SOUND SYSTEM UPGRADE SOLUTION
GENERAL FEATURES:
Today's modern vehicle audio systems are becoming increasingly more sophisticated and complex. PAC engineered AmpPRO to dramatically simplify the  installation of upgraded amplifiers in data-bus controlled amplified sound systems.
AmpPRO allows you to keep the original radio's fit, finish, and features while giving you the freedom to improve the audio performance in record time!
BENEFITS:
Factory sound system upgrade
Time saving design
Prevents need for summing and audio correction devices
Reliable PAC quality
KEY FEATURES:
Upgrade solution for factory, fixed level, data-bus controlled sound systems
Time-saving design, prevents need for summing and audio correction devices
Variable volume, fade, balance, bass, mid, and treble audio settings
Retains OnStar, Bluetooth, navigation, safety systems, and all warning chimes
Front, rear, sub , and center channel preamp outputs (5 volt RMS)
Provides full range, flat audio output for a solid audio foundation
Customized OE bass, mid, and treble center frequency selection
Plug-n-play installation
Remote sub level controller INCLUDED
Optional TOSLINK optical output INCLUDED
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SOME GM  VEHICLES REQUIRE A INTEGRATION HARNESS DEPENDING ON IF YOUR VEHICLE 
HAS BOSE / ON STAR / STEERING WHEEL CONTROLS 
OR ANY COMBINATION.
IF UNSURE MESSAGE YOUR VEHICLE INFORMATION AT THE TIME OF PURCHASE.
IF MESSAGING, WE WILL NEED TO KNOW A "YES" OR "NO" ANSWER IF YOUR VEHICLE HAS 
BOSE / 
ON STAR /
STEERING CONTROLS.
WITHOUT YOUR COMPLETE INFORMATION AS STATED ABOVE, 
WE APOLOGIZE WE WILL BE UNABLE TO RESPOND TO INCOMPLETE INFORMATION.
YOUR ITEM WILL SHIP AS PURCHASED.