Have a P0306 come up when I pr as gas pedal with [engine]...


Have a P0306 come up when I pr as gas pedal with [engine](/topics-engine-chevy/) light blinking. If I reset and let it idle it will come up with P0300. I have replaced plugs, wires, coil packs, fuel injector #6. And also new fuel ...

Have a P0306 come up when I pr as gas pedal with [engine](/topics-engine-chevy/) light blinking. If I reset and let it idle it will come up with P0300. I have replaced plugs, wires, coil packs, fuel injector #6. And also new fuel pump as my pressure was at 35 with key on and erratic needle between 45-60. I am at a loss at this point and hoping for some direction. Thank you Mechanic's Assistant: Just to clarify, can you tell me which light it is? And does it blink first, then stay on steady? 2007 Chevy Silverado 1500 LTZ 5.3 ltr. The check engine light and is flashing along with stability track light on Mechanic's Assistant: Are you fixing your Silverado 1500 yourself? What have you tried so far? New plugs, wires, [ignition coils](/topics-ignition-coil-chevy/), fuel pump and fuel injector cylinder#6. Trying to fix myself. Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Was running fine before this except had hesitation from take off twice before this happened.

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* to Just Answer! I will be assisting you with your questions today. Give me one moment while I review this.

Ok great
Automotive Expert
I’m very sorry that you’re having this issue and together, we will get this figured out. I will need your help too because I can’t see, touch, hear or smell anything that’s going on with your vehicle. We may also require some specialized testing tools in order to assist us in diagnosing the problems due to the complexity of today’s vehicles. JA will offer a phone call to you at an additional fee, it’s your choice. Please be patient with my replies, I reply back in question order received. If I send you an attachment, I will tell you, BUT, you will NOT get it on a phone; you must be on a tablet or PC. Please let me know when you are satisfied with my answers too so we can close out your question. I would first the the freeze frame data for those codes and also MODE 6 misfire data. Other causes would be no injector pulse on #6, plugged [exhaust](/topics-exhaust-chevy/) or a non operational CRANK sensor. Thanks again and all the best:) Ron

Sorry but I don't have a code reader that performs those diagnostics. I will reach out once I can ja e it scanned with that info thanks.
Automotive Expert
I’m very sorry that you’re having this issue and together, we will get this figured out. I will need your help too because I can’t see, touch, hear or smell anything that’s going on with your vehicle. We may also require some specialized testing tools in order to assist us in diagnosing the problems due to the complexity of today’s vehicles. JA will offer a phone call to you at an additional fee, it’s your choice. Please be patient with my replies, I reply back in question order received. If I send you an attachment, I will tell you, BUT, you will NOT get it on a phone; you must be on a tablet or PC. Please let me know when you are satisfied with my answers too so we can close out your question. I would first the the freeze frame data for those codes and also MODE 6 misfire data. Static and running compression tests too. Other causes would be no injector pulse on #6, plugged exhaust or a non operational CRANK sensor. Thanks again and all the best:) Ron Great, thank you too:) Ron

Would it b crank sensor if it starts up fine but becomes rough after idling for few minutes
Automotive Expert
Possibly, but I would NOT replace any more parts unless you're sure. Also do a static/running compression test too

Ok thank you was going to do compression test today.
Automotive Expert
You're welcome. Great. Thanks again and best of luck:) Ron

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