Remove door chime for 99 malibu, or replace with light/flasher

There is no dinger as the other guy suggests . sound comes from the driver door speaker .
The audible warnings alert the driver of a system concern or a critical vehicle condition. The radio generates the audible warnings through the left front speaker. The radio receives audible warning requests via the class 2 serial data line. If the radio receives multiple audible warning requests, the warning with the highest priority sounds first. On vehicles with an audio amplifier, the amplifier instead of the radio generates the audible warnings and receives audible warnings requests via the class 2 serial data line. Either the radio or the audio amplifier is the chime producer. The following lists the audible warning priority and the pulse rate:
Fast rate chime (150 pulses per min)
Medium rate chime (100 pulses per min)
Slow rate chime (50 pulses per min)
Turn signal reminder (will pulse at turn signal flasher rate)

Your best bet ,wear your seatbelt . so the sound goes off . If you do wear the seat belt and the chime sounds ,have a qualified repair shop check it .

Some radios are not compatible with some cars unless they are wired independently or the car wiring suitably modified.

I once had to investigate a discharging battery fitted to a customer's car and traced the problem to the radio. When I removed the radio I discovered it quite warm to the touch in spite of it having been switched off for hours.
The Sony website told me that radio should never have been fitted to that car. The owners thought it would be ok because it just plugged in...

Not sure about dingers or chimes but a buzzer will create enough spurious interference to stop a radio working.

Year/make/model didn't post. You can disconnect the door chime module by unplugging it. Follow the noise under the dash and disconnect the module

dinger is obviously your door open warning, problem 1 solved, dash and tail lights are often on the same circuit in many cars, this will need a new fuse, if this failed when replaced then you have a short, this normally happens in your tail lights

ok your dinger is malfunctioning. take it out. unless you want it in then get another dinger

Sounds like the battery voltage is low, or a battery cable may be loose.

the problem is in the driver door, the door latch has a light switch attached and its sticking, try spraying WD 40 into the door latch this might free it up.

most flasher for the blinkers and emergency flashers use the same one it is built into the Eflasher switch. Some of these had recalls take it to dealer and have them look it up

Replacement The turn and hazard flashers are integrated into one flasher on these models. The flasher is located in the hazard warning switch and the hazard warning switch is located on the trim plate. Replace the flasher by unplugging the old one, removing it from the panel, and plugging in the new one.

1. Remove the bezel from the ignition switch.
   

Remove the bezel from the ignition switch

Carefully remove the instrument panel accessory trim plate.


To remove the trim plate, use a suitable prytool to carefully apply pressure at the retaining clip points . . .


. . . then gently pull the accessory trim plate away

Detach the electrical connector from the hazard warning switch.


Unplug the electrical connector from the hazard warning switch . . .

Unfasten the screw securing the hazard warning switch and remove the switch.


. . . then unfasten the screw securing the hazard warning switch and remove the switch from the vehicle


Installation is the reverse of removal.