2008 Chevy Aveo turns over but won't start and horn honks while its trying.

the split ring in steering column is a ground to horn relay if wire touch ground or pad is compress horn will be active
hope it helps

you need a new horn, and find the bulb that is out

sound you have a blown clutch slave cylinder

Sound like a wire loose. could be the earth cable to the engine, or the main power cable from the battery to the fuse box/ignition switch/starter.

CHECK FOR YOUR BRAKE LIGHT SWITCH IT IS LOCATED BEHIND THE BRAKE PEDAL UNDER THE DASH. FOR A TEST DISCONNECT IT AND SEE.

If your vehicle is equipped with a factory keyless entry system and you have the owner's manual, there should be a section in the manual describing how to change your options with your system. But if you have an aftermarket system, which I am thinking this the case, you will have to manually go into your dash under your steering wheel and cut the wire going to your horn from the security system. Once you have accessed your wiring underneath your steering wheel, there is a main harness with a bunch of wires going to the steering wheel. In this harness you will find a DARK GREEN/VIOLET small gauge wire and you should see another wire tapping into it probably coming from the security module. Just cut it off but leave the DARK GREEN/VIOLET untouched and this will eliminate the horn honks.

This is a clockspring issue that you should repair. If the clockspring is honking the horn, it may next inflate the airbag. You don't want that to happen!

Tire pressure monitoring system. Start by checking your tire pressure and set to what the sticker on the drivers side door frame indicates. If this does not turn the light off you will have to re-learn the sensors to the vehicle. This is done by:
reset the tire pressure monitoring system, to do so, you need to get your key fob, and put your ignition key in the ignition, turn it to the accesories position, and simultaneously press the lock and unlock buttons on the key fob. hold them until the car honks the horn.

then take something to let out air in the tires, you need to start with the left front then go to the right front, then the right rear, then the left rear.

start at the left front, drop the pressure in the tire until the horn beeps, -usually takes 8 seconds or so. then repeat on the other tires in the order above.

After you finish with the final tire, the horn will honk again, then you know your done. usually honks 2 times.

and then you can turn the key off, and set your tire pressures.

Have a friend, (or in-law) someone you're not too fond of, stand in front of the truck while you honk the horn and have them pinpoint it for you.