GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi, welcome to Just Answer. I’m Ron and I’ll be helping youtoday.Before we get started though, Please understand that I don't knowyour skill level or tools you have to assist us. Also understand thatI can't see, smell, hear, or touch the vehicle either, so patience isappreciated. JA is a great Q/A site, but it does NOT replace arepair shop.My goal is to make you happy and get a great rating in return formy time. Sometimes I have to give you bad news that I know youdidn’t want to hear, so please don’t shoot the messenger.
It only shows the one sensor which means that we have either a wiring/grounding issue or a bad computer if the engine is in time.
Okay, then this can either be a false code due to a bad computer, OR your engine injector firing is no longer being sequenced to the ignition firing order. The only way to determine this is with a scan tool and a lab scope. The engine will still run okay but power and fuel economy/emissions can suffer. See attachment for sequencing CAM and CRANK sensors.
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I attached a bit more reading material for you. This is why it's so important to diagnose it the right way too.
Thanks again, Ron