Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Have you tested for spark and ignition signal?
Here is the method to see if you have good spark:
1. Check for RPM in scan data while the engine is cranking.2. If not present, check the Pink wire for 10+ volts while the engine is cranking.3. Check for a 0-5 V or 0-12 V square wave on the Yellow wire from the Crankshaft Position (CKP) sensor, engine cranking.4. If RPM is present in scan data while the engine is cranking, check for spark from the coil wire.5. If spark is present from the coil wire, try a new distributor cap and rotor.6. If no spark from the coil wire, check the White/Black wire between the ignition coil and the ignition module for a break.7. Check Powertrain Control Module (PCM) connector condition.
If you have good spark and it still won't start, try spraying carb cleaner or starting fluid down the throttle body and see if it will run for a few seconds. If it will, then there is a fault in the throttle body injection system.
Here is the location of the CKP if you can't find it.
I just wanted to check and see if you need any additional information. Also, if I have been of some assistance I would appreciate a positive rating. Thanks!