GMC Sierra Car Audio - Car Radio Removal and Install
	GMC Sierra Car Stereo Removal and Replacement
	GMC Sierra Front Door Speaker Removal and Replacement   Speaker Phasing Front Left   Front Right + Tan   + Light green - Gray   - Dark green
	GMC Sierra Rear Door Speaker Removal and Replacement   Speaker Phasing Rear Left   Rear Right + Brown   + Dark blue - Yellow   - Light blue
	Installing Speakers
More Speaker Removal Below - Door and Tweeter
	Factory Wire Color Codes See Diagrams Below
	Aftermarket Wire Color Codes See Diagrams Below
	Troubleshooting Poor Reception and Antenna Replacement
	Speaker Phasing Installing Aftermarket Speakers and Proper Hook-up Speaker Phasing Font Left   Front Right + Tan   + Light green - Gray   - Dark green       Rear Left   Rear Right + Brown   + Dark blue - Yellow   - Light blue
	NO AUDIO With aftermarket stereo installation?
	Erratic Volume Control DIY Repair
GMC Sierra Front Tweeter Removal and Install
	Front Side Pillar Tweeter How to Remove and Replace
	1.1) Pry top edge of side trim panel from pillar releasing clip. All clips release with pry pressure.
	2.1) Pry down along edge of side trim panel.
	3.1) Lift bottom of side panel up, two tabs release from lower dash panel.
	4.1) Looking through front windshield down toward front dash panel, see two opening. Bottom tabs on side trim panel mate to these openings.
	5.1) Looking through front windshield down toward front dash panel, pull tweeter wire up from dash for access to connector.
	6.1) Squeeze trigger on side of connector into connector to release.
	7.1) Remove side trim panel.
	8.1) With small flat head screw driver, gently pry clips from tabs on side of tweeter assembly.
	9.1) Pry all clips around tweeter assembly releasing all tabs.
	10.1) Pry all clips around tweeter assembly releasing all tabs.
	11.1) Remove tweeter.
GMC Sierra Rear Speaker Removal and Install
	Rear Speaker Removal and Installation
	1.1) Remove one screw from cup holder cavity.
	2.1) Remove one screw from door hold cavity.
	3.1) Gently pry top edge of insert panel around door open handle.
	4.1) Twist insert panel over door open handle to remove and set to side.
	5.1) Starting at top of door panel, gently pry panel from door releasing clips.
	6.1) Work your way around entire panel releasing clips.
	7.1) Remove entire door panel and set to side.
	8.1) Push side clip in to release clip on speaker.
	9.1) Swing speaker out from door panel and remove speaker.
	10.1) Release trigger at connector on speaker to disconnect. See Speaker Phasing above.
GMC Sierra - Wire Diagrams - Wire Color Codes   Wire Diagrams, Cadillac, Chevrolet, Corvette, Geo, GMC, Oldsmobile, Pontiac and Saturn. DO NOT CUT FACTORY WIRE HARNESS     Aftermarket stereo installation? Why purchase the aftermarket wire harness? Installation is easier, no guess work with wire color codes and a Headache Saver! Factory wire colors codes are not universal. See Aftermarket Videos above. We discourage cutting the factory wire harness. This section aids in troubleshooting and determining wire color codes, phasing for speaker hook up, locating power wires for installing external devices and add-ons. Diagrams may not be applicable to Bose Audio Systems     IMPORTANT - There are two (2) yellow*, two (2) gray and two (2) brown wires in this harness. Locate the +12 volt constant wire first. Label it or splice to constant wire on aftermarket stereo first. Swapping yellow wires will cause damage to any aftermarket stereo. Check fuses if your unable to find +12 volts. 1   Gray Left Front Speaker (-) 2   Tan Left Front Speaker (+) 3   Dark Green Right Front Speaker (-) 4   Light Green Right Front Speaker (+) 5   Black Ground 6   Brown Illumination 7   Gray Dimmer 8   Blank   9   Yellow* (Green) Switched +12 volts 10   Orange Constant +12 volts 11   Light Blue Right Rear Speaker (-) 12   Dark Blue Right Rear Speaker (+) 13   Yellow Left Rear Speaker (-) 14   Brown Left Rear Speaker (+)     All wire diagrams and color codes are not 100% accurate.
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