On my 1999 suburban 1500 came out on the panel, the ( service engine sun } light, I test it and on the test came out manfacurer control p1345, ignition system or mis fire. the engine crank perfect it doesn't shake and run and drive very good I replace the oxygen sensor on the back and the still stays on. what can be the problem. can you help-me please thank you sincerely.

Hi Jeff
Fault code P0456 means evaporator emission control small leak detected.
you need to check the tank filling cap, evaporator valve, hoses and connection for leak.
Good Luck

tranny's gone

The primary intent of this code is to detect slipped camshaft timing. Have you checked the camshaft timing? Your symptoms indicate you are a tooth off.

Could be the cankshaft sensor.

IF YOU REPLACE CMP SENSOR AND CKP SENSOR. YOU NEED A SCAN TOOL TO DO THE VARIATION LEARN PROCEDURE.TO RESET AND RETIME CKP AND CMP SENSORS BEFORE ENGINE WILL START.

P1345 is Camshaft To Crankshaft Position Correlation Fault. This code is set for a couple of reasons. Most common is a stretched timing chain. The other is the distibutor drive gear is worn. In some rare instances if the distibutor was removed for any reason and the engine was disturbed at all, the distributor could be put back in 1 tooth off, the engine will run but you will get this code.

P1345 is "Crankshaft position sensor / Camshaft position sensor correlation"

Code P1345 determines if the distributor is installed incorrectly, or if a mechanical malfunction is present in the engine. The light will trigger when the engine is running and the camshaft sensor reference pulse is not detected at a correct relative position with the crankshaft pulse. Most likely causes for this Chevy check engine light code include a faulty crankshaft position sensor, a wiring concern or an improperly installed distributor. A quick check on the crankshaft sensor is to monitor the RPM value with a scan tool while revving up the engine. If the reading is close to twice the expected RPM, then the sensor is likely faulty. There are other less likely concerns possible, such as base engine or computer related issues, but these involve more in depth testing. I hope this information is useful.

You need to be sure your static ignition timing is set properly. If your timing is off it will set off the check engine light.

Your starter solenoid is stuck. If you have electrical power to the rest of your car. That is most likely your problem. The solution would be to replace your starter. You can take your solenoid off and just replace it.