The cacophony you hear is the switch turning on and off.
Turn signals on the Chevrolet Impala and all other vehicles guide by the fast opening and closing of a switch within the turn expression relay, or flasher. The system of the switch produces an audible clicking when activated. Any blast created by the switch can be amplified by housing the relay in an empty room remain the sprint, which is where most relays are positioned. Reducing or eliminating the clang requires wrapping the switch with sound-proofing counsel. Most Impalas position the noisy relay directly last the left centre of the instrument panel mounted to the firewall.
Instructions
1. Stretch up at the end the sprint and sense for the relay. You Testament stroke the clicking when your ability is on the relay.3.
Turn the pivotal position to "ON" and activate the switch.2. Hint the domicile of the sound by listening to the clicking until you establish the turn word relay. Most relays are mounted near the fuse panel unbefitting the sprint and, typically, to the left of the steering borderline.
Remove any essential sprint or trim panels using a screwdriver or socket wrench as compulsory. Most Impalas are laid out so that you should be able to arrive the relay by reaching up from beneath the dash into the back of the instrument panel. Newer models may require that you remove the instrument panel to access the relay. You will have to remove the lower dash panels first to remove the instrument panel.
4. Wrap the switch with a non-conducive sound-dampening material. A cotton rag, foam padding, or sound-deadener material, available from auto parts retailers, is sufficient. Secure the material to the switch with electrical tape. You may need to tape the material to the firewall over the switch. Add as many layers as you feel necessary.
5. Reinstall any dash or trim panels you removed.
