IN ATTEMPTING TO START THE CAR, I HEAR A CLICKING NOISE WHEN i TURN THE KEY

Impala's are famous for ignition issues, are the interior lights of your dash coming on when you want them, or just by themselves? The clicking after you turn off, I would check the security system, i.e., remote clickers, cars computer, key chip, ect. Sound like your alarm is attempting to engage

I would first check battery voltage

that item is called a relay switch. it toggles on and off depending on which electrical component it is connecting. if it's blown, they are cheap and easy to replace like a fuse, but you'll need to look at the fuse box chart (usually on the underside of the lid) to determine which one and where it's located. You can't look inside the relay to determine if blown, but you can replace them one at a time to test...
Also, if you're experienced in electrical, a paper clip can be used when the relay is out, to connect the circuit that you need. use tools and or gloves when attempting this method.

Hello! Does the vehicle have a standard or automatic transmission?

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do you hear a hising noise if you dont your fuel pump is shot but if you do check your spark plugs and wires..also have some one give you cables see what happens

If all you hear is a clicking noise when attempting to start your car it could be caused from a weak battery (from a battery failure or because the alternator failed to charge the battery) or a faulty starter.

The clicking noise you hear is likely the starter relay. (should be identified inside the box cover) You need to check that battery is up to full voltage, terminal connections are clean and secure and that there is 12 volts at the main power lead on the starter and power at the small trigger wire connection at the starter when the key is turned to the start position. If you have that, then very likely the starter needs to be replaced. If not you will need to check wiring and neutral safety switch as well as main fuses in the power distribution center (the box where the clicking relay is, near the battery)

You have a solenoid on your starter. The solenoid is what you most likely hear clicking. The battery seems to be fine from your info. The starter can be repaired with a new solenoid. It really depends on who you go to and what the charge is to repair. The battery sends power to the solenoid, the solenoid kicks power to the starter to turn the starter for your engine to start. Good Luck

if the battery is fine check if you hear a clicking noise coming from the starter motor when you turn the key to try and start the engine.
If you hear this noise then this is a good indication that the selenoid has failed meaning you need to replace the starter motor.

You can give the starter motor a hit with a piece of wood as some times this will get the starter motor working just to start the car but this isnt a permanent fix and could leave you stuck if you used the car.

Now if the starter motor isnt clicking but you hear a clicking noise coming from either the cars fuse box or the ecu when you turn the key to start the car then this would indicate a problem with the imobiliser this would need testing using a diagnostic machine as their is no other way of testing this to find out if its at fault.

Let me know how you get on or if you need further assistance ok

hi, can you hear a clicking noise when you turn the key to start as the starter gets its power direct from the battery so also check these wires are connected and not came loose.
If you can hear a clicking noise when you turn the key this means the starter motor needs replacing ok.
Let me know how you get on or if you need further assistance ok