02 caviler.. cranks but will not start.. have replaced crank sensor,fuel relay sensor.ignition module as well as spark plug module... and replaced battery

does it have spark ?
No Start No injector pulse shorted injector part 1

No Start Testing Basics Spark Injector Pulse and Fuel Pressure Hyundai...

GM Bypass Ignition System Operation part 1

If you watch any of these ,watch the last one .Ignition control module can cause no injector pulse but still have spark

Crankshaft position sensor an Ignition control module most likely , could all so be a fuel problem ! Check for spark at plugs if no spark ignition module or crank sensor . check for fuel pressure , no fuel pressure , fuel pump , fuel pump driver module some makes !

Check the ignition module, could be in the steering column, could also be a anti theft condition.

Check for spark to the spark plugs, while cranking the engine. If no spark, you could have a bad ignition module, or a bad crankshaft position sensor. The crank sensor sends a signal to the computer, to start the fuel pump and signals the ignition module to start firing the spark plugs. It also drives the tachometer through the computer (PCM) Powertrain control module. The ignition module can be removed and taken to a parts store to have it tested. The crank position sensor is not as easy to test. Easier to just replace it. Good Luck. But wait, I have seen people replace the fuel pump, checked the fuel pump harness for power, and all was good. However, if the fuel pump does not have a GROUND, it will still not operate. Might want to check that. Have fun.

Probable Causes: Fuel Pump (P0230 to P0233) PCM (P0600 to P0606) Crank Sensor (P0355 to P0399) Fuel Pressure (P0190 to P0194) Chances are the Check Engine Light is not on, but you may find any of the following codes: P0230 to P0233 Fuel Pump codes P0600 to P0606 PCM related codes P0335 to P0339 Crank Sensor codes P0190 to P0194 Fuel Pressure Sensor codes No spark due to a bad crank position sensor, a faulty ignition module or PCM, a problem in the ignition circuit (ignition switch, antitheft system, wiring, etc.), a faulty park/neutral safety switch, a bad ignition coil (only on engines with a single coil ignition), or wet plugs or plug wires (did it rain last night, did you just wash the engine?) A less common cause is a worn starter that draws so many amps while cranking the engine that there's not enough juice left to adequately power the ignition system and fuel injectors. Contributing factors might be a weak battery and/or loose or corroded battery cables. No fuel because of a dead fuel pump, bad fuel pump relay, blown fuel pump fuse, plugged fuel filter or line, or failed PCM injector driver circuit or injector power supply relay. Or, the fuel tank might be empty (don't believe what the gauge is telling you), or the fuel tank might contain contaminated fuel (water or too much alcohol) or the wrong type of fuel (whoops, somebody put in diesel instead of gasoline). No compression because the timing belt or chain is broken, the timing belt or chain is loose and jumped out of time, or the overhead camshaft has snapped.

is the your car engine cranking when you try to start, first check spark plugs ignition coils, remove one ignition coil and spark plug fix the spark plug in to the ignition coil then connect ignition coil to wiring and keep spark plug body touching on ground of engine head mettle parts, ask some one to crank engine then you can see is the plug sparking or not, do the same way to all the coils and plug otherwise you have to buy a ignition spark tester, is the all the coils and spark plugs are OK then check the fuel pump, it's sitting in under rear seat, before that do one thing disconnect oxygen (O2) sensor wiring and crank engine, the thing is if your oxygen sensor completely dead fuel pump will stop working, if engine start after disconnect O2 sensor, replace new O2 sensor, otherwise need to check fuel pump relay fuse and fuel pump. is this information helped you? please vote me and give a comment.

The timing chain may have went bad. Causing the pistons to come up and hit and bend the open valves, if the valves don't close completely, you'd have no compression. I would remove the valve cover and verify that everything is operating.

Could be fuel pump relay, Plugged fuel filter, Bad spark plugs.
You can also check your crank sensor if you have coil packs and igniton module to make sure it is sending a signal every time the crank rotates thus providing spark to ignition module, plugs wires, and to plugs.
You can check the relay itself with an ohmmeter, place tester in ohm setting, place one probe on each side of relay

You will want to find out if you are not getting spark or not getting fuel.
If no fuel, then bad fuel pump, plugged fuel filter, or bad fuel pressure regulator, or bad fuel pump relay.

If no spark, then bad crank sensor, or ignition module, or coil packs.

Had any check engine lights come on before you made any changes?
The ignition system uses an ignition coil, crankshaft and camshaft angle sensor along with the car's computer or PCM (power control module). This system can stop working due to a failed ignition module or crankshaft angle sensor.
Testing the ignition system is an easy job that takes about five minutes and can be done using a test light or an extra spark plug. Connect a test light to ground and with one of the spark plug wires or coils disconnected. Crank the engine over while holding the tip of the test light about 1/4 inch from the wire or coil terminal. Keep your hands clear of the test area to avoid accidental shock (non lethal). You can also insert a spark plug into the coil or wire and hold it against a metal ground. You should see a light blue spark in the gap .. which tells you the system is working. If no spark is present suspect that the crankshaft sensor needs replacing which is the most common problem.
But you could also check your relay/fuse box and see if any ignition related relays are bad. One way to check a bad relay is to find another one in the box that is exactly the same ans switch them ... and see what happens.
Helpful?
Good luck on your troubleshooting