Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
What is the code you have for cylinder 1?
Is it P0301?
How do you know cylinder 1 is misfiring?
It won't be a crank sensor just for cylinder 1.
As an intermittent, why don't do you swap, the coil, the spark plug, the plug lead, and the injector, taking note where all the parts from cyl 1 went.
Then when the misfire reoccurs, it could be one of those components, or further diagnosis required.
Ok, I'll hear from you when you get some results.
Do you need any further help?
I hope my advice has been of assistance to you.