Fix driver side front speaker short - 2007 Buick Lucerne CX

Probably the amp is dieing. They don't seem to put them in good places to keep them dry.

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.

Pop the cover off,pull the speaker,and make sure the wires are plugged on to the terminals.Simple fix.

remove the speaker from drivers side , put that speaker in passengers side , if works in passenger side then speaker is o.k and if not speaker is stuffed if working wiring problem in drivers door or from stereo head unit .

Check the speakers if they work. Connect the speaker terminals using a short wire to a 1.5 volt battery (AA or any dry cell batter) and listen if there's a thumping sound when the wires are connected to the battery terminals. If there's no sound, your speakers are busted. If there's a sound, check if the wires are okay. Use the same method with the battery with the wires from the back of your stereo. Make a small cut on the wire and attach the short wires you used earlier.

check your wiring harness for back contacts

big red
remember that the dark colors in the wireing harnes are going to allways be negative check all of them again and you wont get a short

the only way to check this is to pull you factory radio out and check the connections on the back side you should have 2 black clips that plug into the radio if those are loose it will short out from time ti time and not work when you put your turn signals on

Yes, it might be a fuse problem or it may be a short in the wiring in the driver's door...the wiring you can see by the door hinge when you open the door or you might have a bad window switch on the driver's door which is causing a short that is effecting your speakers.

The first thing I would do is pull the stereo out of the dash and unplug it . If the buzzing stops the stereo is bad get a new stereo. Its not hard to remove the stereo. Right above the cup holder there is a small cover you need a very small screwdriver to remove it . Under that is a few screws take those out then grab the plastic cover that runs around the stereo and pull towards the back window it simply pops off (No screws) After you remove that cover you will see 4 phillips head screws that hold the stereo in remove them. Last slide out the stereo there will be 1 plug with alot of wires that is the power and speakers . Unplug it . The other round plug is the FM antenna