Question about 2002 GMC Envoy

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My 02 envoy rear speakers dont work and my front speakers are real low sound

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  • 288 Answers

Its a bad connection or a short problem with the wires. have someone who knows how to use a multimeter to check this out.

Posted on May 24, 2011

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Posted on Jan 02, 2017

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1 Answer

I have a 2010 cobalt lt. Today both my feont speakers quit working. And now my turn signals make no noise. Or the door chime or the seatbelt indicator does not work. What causes this and how do I fix it?...


The chimes an turn signal noise come out driver door speaker . Both front speakers not working could be a blown circuit fuse inside the radio or just blown front speaker channel . Your best bet , take it to a GM dealer or someother qualified repair shop . You have no idea of the complexity of this . The radio can set DTC'S - diagnostic trouble codes , believe it or not !
DTC B1025, B1035, B1045, or B1055
DTC B1025 01: Audio Output 1 Left Front Circuit Short to Battery
DTC B1025 02: Audio Output 1 Left Front Circuit Short to Ground
DTC B1035 01: Audio Output 2 Right Front Circuit Short to Battery
DTC B1035 02: Audio Output 2 Right Front Circuit Short to Ground
DTC B1045 01: Audio Output 3 Left Rear Circuit Short to Battery
DTC B1045 02: Audio Output 3 Left Rear Circuit Short to Ground
DTC B1055 01: Audio Output 4 Right Rear Circuit Short to Battery
DTC B1055 02: Audio Output 4 Right Rear Circuit Short to Ground

Each of the audio output channel circuits (+) and (-), at the radio and audio amplifier have a DC bias voltage that is one half of the battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. This voltage will vary depending on what type of audio is being listened to, talk or music, and type of music, as well as the volume setting of the system. Low volume and talk settings will measure around 1V AC and less, where constant music may measure 3V AC and slightly higher.
DTC B1287 01: Amplifier Control Signal Circuit Short to Battery
DTC B1287 02: Amplifier Control Signal Circuit Short to Ground
DTC B1287 04: Amplifier Control Signal Circuit Open

The radio provides a remote amplifier mute output circuit to control overall muting of the remote amplifier. The amplifier receives pulse width modulated (PWM) signals on the control circuit at varying duty cycle percentages for controlling muted and unmuted functions of the amplifier. Circuitry internal to the radio monitors the remote amplifier mute circuit for faults and sets the appropriate DTC when faults are detected.

Feb 16, 2018 | 2010 Chevrolet Cobalt

2 Answers

Why did the speakers in my 2005 envoy suddenly stop working?


Check the wiring harness on the back of the radio to see if it's loose. If you have a Bose system, the amplifier may be going bad.

Jun 08, 2014 | 2005 GMC Envoy

1 Answer

Raido wire diagram 2002 envoy


2002 GMC Envoy Car Stereo Wiring Chart
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox or ignition switch harness for switched power.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Jul 23, 2012 | 2002 GMC Envoy XL

1 Answer

Wiring after market spekers need to know if a or b is positive or negitive


dont know about a or b but wiring should be color coded. these should be the colors and description for 02 silverado
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Dec 31, 2011 | 2002 Chevrolet Silverado 1500

1 Answer

Changed the battery when i turned the air on the rpm dropped and the truck cut off also it said oil pressure low. but runs good without the air on i have a 02 gmc envoy


You need to have the throttle body cleaned, make sure both the front side and rear side are cleaned thoroughly. Changing the battery reset the computer to factory default settings which are different than when it operated with a dirty throttle body.

Sep 03, 2011 | 2003 GMC Envoy

1 Answer

I have a 1991 plymoth sundance putting a after market radio in it i put the speakers in hook them up turn the volume all the way up and the music sounds real low what is the problem please


Sounds to me like the speaker wires may be reversed but then again I'm not perfect, just don't tell my wife that. Anyhow here is the wiring info for your vehicle just to double check. I hope this helps you and good luck.

1987-93 Plymouth Sundance Stereo Wiring Constant 12V+ Pink Switched 12V+ Red/White Ground Ground/Back Strap Illumination n/a Dimmer Orange/White Antenna Right Front Front Speakers 5 1/4" Doors Left Front (+) Green Left Front (-) Green/Yellow Right Front (+) Purple Right Front (-) Purple/Yellow Rear Speakers 5" x 7" Side Shelves Left Rear (+) Brown Left Rear (-) Brown/Yellow Right Rear (+) Blue/Red Right Rear (-) Blue/White

Mar 28, 2011 | 1991 Plymouth Sundance

1 Answer

Low beam head lights turn off while driving now dont work at all just high only its an 02 envoy


hihi...
there may be loose connections with the bulb socket. so they turn off and on while driving.

now the loose connection might hav developed and the wire might have came out from the socket so the light dosnt glow now.

try checking and putting back the wire in place

Jul 09, 2010 | 2002 GMC Envoy

1 Answer

Rear speakers dont work


I need to access my speakers (both front and rear) in my 2002 gmc envoy-they come in and out and i think something has come loose.

May 20, 2010 | 2004 Chevrolet Suburban

1 Answer

Rear windshield wiper stopped working, 4x4 dosent


sounds like a lot of fuse's blown or the fuse box it's self has a fault

Dec 24, 2009 | 2004 GMC Envoy

2 Answers

Need wiring diagram for Gmc envoy stereo


I dont believe its used in your situation .

here is a rundown

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox or ignition switch harness for switched power.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Mar 27, 2009 | 2006 GMC Envoy

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