GMC Envoy Car Stereo and Speakers Removal and Repair
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GMC Envoy
 Car Stereo Removal

   
Most common stereo problem for single and 6 CD players, CD clicks while attempting to eject, will not play or accept CD's. See Car Stereo Repair.
   
Front Door Speaker Removal Troubleshooting
NO AUDIO
   
Rear Door Speaker Removal Troubleshooting
NO AUDIO
   
Factory Wire Color Codes
See Diagrams Below
   
Aftermarket Wire Color Codes
See Diagrams Below
   
How to Installing Aftermarket Speakers
   

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 Envoy Front Dash Speaker Removal and Installation
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1.1) Gently pull top edge of side pillar panel from vehicle releasing clips.
2.1) Pull side panel down and back away from front dash to remove.
3.1) Repeat steps for driver's side pillar side panel and remove.
4.1) Gently pry front dash panel from dash.
5.1) Work you way across dash releasing all clips.
6.1) Lift back edge of panel up and pull toward back of vehicle to release and remove.
7.1) Remove screws securing front speaker to dash and remove.
   
GMC Envoy - Wire Diagrams - Wire Color Codes
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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
   
GM Wire Harness Diagram, Wire Color Codes and Pin Configuration Wire color codes and wire diagrams
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 (+)
   
Wire Codes and Pin Lay Out on Back of Factory Car Stereo

Wire color codes, wire diagrams, connectors and configuration
Note the location of the connector "Keys" in yellow.

 

1 Ground
2 Right Front Speaker (+)
3 Right Front Speaker (-)
4 Left Rear Speaker (-)
5 Left Rear Speaker (+)
6  
7  
8  
9  
10  
11  
12  
13 Illumination
14 Right Rear Speaker (+)
15 Right Rear Speaker (-)
16 Left Rear Speaker (-)
17 Left Rear Speaker (+)
18  
19  
20  
21 Dimmer
22  
23 Switched +12 Volts
24 Constant +12 Volts
   
All wire diagrams and color codes are not 100% accurate.
   
   

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Factory Car Stereo Repair, Inc.
1987 Corporate Square, Suite 159
Longwood, Fl. 32750