Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello and welcome!My name isCustomerand I can assist you with your question.
Are you looking for some possible causes or would you like me to walk you through this diagnoses?
Hello and sorry for the delay! No problem. I will be happy to help.
Do you have a 4.8 or a 5.3 liter engine. I will pull a wiring diagram for you.
Lol.. no problem.
I will list some possible causes and then explain how to test/diagnose.
Park nuetral position switch
faulty fuse block
But dont worry, they are not all very common. The Park nuetral position switch and starter relay are the most common to cause this condition.
Here is how to diagnose it.
Open the hood and located the starter fuse in the underhood junction block.
Remove the starter relay
Check for two powers and one ground going into the relay with the key in the CRANK position. This is checked on the female terminals where you would plug in the relay (but of course doing this with the relay removed).
I will send over a wiring diagram for this circuit for your viewing pleasure. You can see where the powers come from to the relay and where the ground comes from going to the starter relay.
Here is the diagram
The relay gets power from the IGN A fuse and the IGN E fuse after going through the PNP switch. The PCM supplies ground to the starter relay.
I am glad I can help!
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Please let me know if you have any further questions.
The diagnoses will likley lead to one component that has failed causing both problems. For exmaple, a bad ignition switch could cause both this no crank condition and the "no gauges" issue.
Its likely the ignition switch has gone bad and or there is a major power loss issue to the starting circuit AND the instrument cluster causing both problems. YES, by running these steps and diagnosing the problem, it will lead you in the right direction.
I will be here for you the entire time if you have any further questions please feel free to reply back as I will be happy to help.