Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
first.check the fuel presure,,these must have no less then 60psi at all times..even while turning the starter,,the fuel pump may be weak also,check the crank sensormmake sure it is plugged up well,it may also be bad,,,check the fuel presure first
Test Description The numbers below refer to the step numbers on the diagnostic table.
Notice: Do not allow the fuel pressure to exceed 517 kPa (75 psi). Excessive pressure may damage the fuel pressure regulator.
The Vehicle Control Module (VCM) has integrated IC circuits that are fault protected; therefore, if a circuit has failed, the integrated IC may not be damaged. If that is the case, the IC will keep the circuit open until the fault in the circuit has been corrected.When the fault has been corrected, reinstall the VCM and check the circuit. Replace the VCM only if the circuit is still inoperative.Test Description The numbers below refer to the step numbers on the diagnostic tables.
INSTALLATION PROCEDURE NOTE : Make certain that the Crankshaft Position (CKP) sensor mounting surfaces are clean and free of burrs before installing the CKP sensor.
I had replaced the fuel tank and fuel pump and had the battery disconnected. The engine would start and then stall. I let it sit for a day and yesterday, temperature got up to 50 degrees with sunshine. While you were diagnosing the problem, the car started. So I ran it for a while. I appreciate all the info you provided and will "accept" for payment.
The information and charts alone are worth it. Any more info you would like to provide would be appreciated. Again Thanks. - Larry
when you remove the battery on this ..you may need to reset the passlock..this may have been why it didnt start
PROGRAMMING REPLACEMENT PASSLOCK(TM) SENSOR, BCM, OR PCM IMPORTANT:
Conditions Use this procedure after replacing:
30 Minute Re-Learn Procedure
you are welcome
thanks for useing justanswer....