I Have a 1999 Chevy s-10 and when I turn the key nothing happens. I have checked the charge on the battery and its fine. When I turn the key to the on position lights come on just cant get it to fire up.

Did you check your battery voltage? Try to jump the vehicle with another vehicle that is running fine? It takes less battery power to light up bulbs in the dash than it does to crank your engine.

- Switch on the head lamps for 5 minutes.
- Keeping the head lamps ON, start the engine.
If the lights die,
- Check the battery terminals.
- Check battery state of charge.
- Charging system.
If the lights still glow sharply,
- Check fuses and relays in under the hood fuse and relay box junction.
- Battery to starter motor cable.
- Battery to engine ground and chassis ground cable.
- Solenoid on starter motor.
- Starter motor.
- Wiring.
-Ignition switch.

Usually a sign of something draining the battery.
The machine test probably showed the battery could hold a charge and the alternator was charging the battery.
You may need to have someone check for a power drain.
When the key switch is off, there may be a weak short to ground or a relay or component that is using power.

If no movement of the engine happens at all, then please check the following:

1) Battery voltage. You should have 12.5 volts and over. Try turning on the headlights and cranking. If they dim considerably, then your battery is likely flat and may need charging/replacing.

2) Battery voltage is fine, but nothing happens: Is there a clicking when you turn the key? If so, then check the starter motor. It's likely failed.

3) Battery voltage is fine, but there is no clicking when I turn the key. Check voltage to the starter motor solenoid on the top of the motor. If it is receiving power when you turn the key to crank, yet not moving/engaging, then replace it.

4) Battery is fine, but no power to starter motor and/or solenoid. Check all battery connections, leads and connections to the motor and engine body.

You have a dead battery.
The procedure to fix it is as follows:
1) Charge battery.
2) check alternator belt tension. If loose, tighten or replace.
3) If still no start, replace battery.

try cleaning or replacing battery cables. any corrosion can degrade the voltage. check the wiring behind the fuse block also. (loose wires..) your chevy may also have a fusible link between the battery and the fuse block.

I would have battery checked/charged and/or replaced. Then starter, then alternator checked.

If you crank the engine with the headlights on and the lights do not go dim there is no current going to the starter. This could be;

• A worn ignition switch, usually caused by a heavy bunch of keys swinging on the switch for years. Try and crank the engine whilst wiggling the key in the switch. If it cranks, that is your problem.
• The starter solenoid might be dead, so it won't allow the starter to crank.
• Doubtful, but a blown fuse.

sounds like worn out starter brushes, remove starter and check, it sounds worn out

hope2help shack

Check your courtesy fuse, battery connections or test battery itself.