Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner past midnight.
Will it at least crank?
Are there codes stored?
Did you remove the engine to get the transaxle out?
Any way you can get it scanned to see which codes are stored?
This warning normally comes on when the computer detects something wrong that could result in engine damage like a failure of the throttle body, coolant temp reading or oil pressure reading.
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Are you able to check the fuel pressure, ignition spark, and injector pulse to see which is missing?
No spark can be caused by no crank sensor signal getting to the PCM. Have you checked that sensor?
Let me know the results of checking out the CKP sensor.
You may find the only way to figure this out is going to require a better scan tool.
What liter engine do you have?
A scan tool is needed to perform the CKP variation relearn procedure.
The GM tech 2 scan tool is the preferred tool.
You can purchase a snap on tool that can be used on all makes and do most all features that a dealer scan tool can perform.
Yes this can be one of the causes for a crank no start concern.
Replacing parts without being able to diagnose they are in fact to blame is going to cost you alot of money and time. Do you know anyone with a better scan tool?
Key on, one coil unplugged.
At #1 is the black wire ground, brown wire ground, pink/black wire power?
Hello again Chris here,