Had similar issues with my 16 ZO6. Also make sure all connections are tight. Sounds basic, but a loose cable also caused me problems. Good luck !
Out Of Winter Blues - Error Codes
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Out Of Winter Blues - Error Codes
Well, got the 17 Z06 out yesterday for it's first drive of the year.. got about 2 miles and it started running rough, then the wonderful Stabilitrak, Service Rear Axle, and CEL flashing. Had to keep the car around 40mph to get it home. Only codes so far are the P0300, but need to grab my good scanner for more in depth checks. Chevy app warning my Emission System & Antilock Braking System... which is nuts.. First time the Z gave me any problems like this. Battery on the maintainer since day one, says good, but battery is 5 years old might not hurt to replace it to be sure. Could be gas is bad I guess as well kinda doubt it tho'.. Will be interesting to see what I find.. sheesh not a good start ... I know others have had experiences with this stuff as well... wish me luck..
Last edited by Gixxerman; May 15, 2022 at 11:53 AM.
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Good luck. 
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I am leaning towards battery even tho car starts fine and it's always on a tender. It is 5 years old.. just have a hard time believing something went wrong just sitting in the garage...
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0300 is gobs of misfires. Unless a rodent has been gnawing on your wiring, I'd suspicion a battery as a good possibility.
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Last edited by eboggs_jkvl; May 15, 2022 at 03:17 PM.
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I will double check all of them ty
Last edited by Gixxerman; May 16, 2022 at 08:02 PM.
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Damn, tested battery 13.7 volts and 765 cranking amps.. she may be 5 years old but it ain't the battery unfortunately..
Last edited by Gixxerman; May 16, 2022 at 08:02 PM.
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Was getting a P0307, so I swapped out coil wire and plug from 7 with 5. Car is back to P0300..multiple misfires. I may just have to drive slowly and just get it to my dealer
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Can't you just swap out the bad ignition coil? Looks like you figured out which one it is. The code will tell you bank and cylinder. Just did this on my DD but never did it on my C7. Saved me a trip to the mechanic. $50 for a new ignition coil. Bought a spare for next time.
Last edited by Zjoe6; May 17, 2022 at 10:28 AM.