2014 5.3 CEL Code P0300

[tx2014]

Drove the truck on about a 40 min trip as I got back super rough idle and truck wanted to die. Tried to restart the truck rough idle wanted to die CEL appeared. Tried to start the truck again and would try to turn engine over but wouldn't. After about 7 hours truck started with a really rough idle (truck shaking) CEL stayed and pulled P0300 (Random/Multiple Cylinder Misfire Detected). Anybody with this? Input?

 

2014 Silverado 5.3 ~40,000 Mi

[slee3247]

Bring it in for warranty repair if you can get it to replicate the issue. Dealer will be able to tell which cylinders are actually being affected and target those areas first. Good luck

[tx2014]

That should be covered under power train? Pretty sure i'll have to get it towed the check engine is blinking when its running.

[Rawyzf]

Sounds like the dreaded spark plug wire coming loose.

 

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