GMC Envoy Car Stereo, CD Changer and Bose Amp Removal
Car Stereo Repair
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GMC Envoy
How to Remove and Install Car Stereo
Factory Wire Color Codes
See Diagrams Below
Aftermarket Wire Color Codes
See Diagrams Below

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
With aftermarket stereo installation?
Erratic Volume Control
DIY Repair

GMC Envoy
How to Remove Lower Dash CD Changer and Bose Amplifier

1.1) Pull side center console panel from console releasing clips. All clips release with pressure.
2.1) Remove side panel.
3.1) Gently lift center console insert up to release clips.
4.1) Lift center console insert up, twist and lift over gear shift and set to side.
5.1) Remove two exposed screws at top of opening from center insert removal.
6.1) Remove two exposed screws in side cavity.
7.1) Lift arm rest, remove pocket insert.
7.2) Remove contents from center console.
8.1) Lift mate and remove from bottom of cavity.
9.1) Remove two exposed bolts.

*Note - A piece of paper placed into 10mm socket will lock nut into socket for removal without dropping nut into cavity during removal.

10.1) From side panel removal see connector.
11.1) Lift lever arm.
12.1) This will release connector.
13.1) Set Parking Brake and shift to low gear.
13.2) Lift back of center console up.
13.3) Pull back from front of dash and lift over gear shift for removal.
14.1) Place center console on ground to continue.
15.1) Turn center console up side down.
15.2) Remove screws securing Clarion CD changer to center console.
16.1) Pull side panels from Clarion CD changer and remove CD changer from center console.

Bose Amplifier Removal Instruction

1.1) From opening on top of center console, release trigger on Bose amplifier connector and remove connector.

2.1) With center console up side down, remove screws securing Bose Amplifier from center console and remove.

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.
GMC Envoy - Wire Diagrams - Wire Color Codes
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Wire Diagrams, Cadillac, Chevrolet, Corvette, Geo, GMC, Oldsmobile, Pontiac and Saturn.
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 (+)
13 Illumination
14 Right Rear Speaker (+)
15 Right Rear Speaker (-)
16 Left Rear Speaker (-)
17 Left Rear Speaker (+)
21 Dimmer
23 Switched +12 Volts
24 Constant +12 Volts
All wire diagrams and color codes are not 100% accurate.

Front and Rear Speaker Removal and Replacement presently not available.

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