P0300......

[SteveCZ]

So it’s been an “interesting” past few days. Started the truck using the key fob and heard what I thought was “lifter tick”....  threw sea foam in the motor, fearing the “collapsed lifter” epidemic.   I have 96k on my 2014.  Drove it 8 miles to my parents house and it was misfiring and bucking and all sorts of lights on the dash.  

 

Long story short, opened the hood, listened to where the tick was coming from and found a plug wire that literally fell off in my hand.  The tick was arcing of the coil to the wire.  

 

The real question is, how does a freshly replaced plug wire break loose, when I just had ALL of them replaced 6 months ago, yet one is loose.  

[SteveCZ]

Oh, and I just had some tranny work done under warranty just before the 5/100 was up....  hmmmmm

[1SLOW1500]

So I will add to my normal advise. I now believe every single.pwrson should have a plugbin scanner. For under $20 you would know and fix in under 1 minute. 

I still haven't picked one out. But I will. 

Also i would NOT have ran stock wires when for $30 and free shipping on Amazon you can get the way better booted acdelco performance plugs. They click on so hard it is impressive. And just better. I know I broke stock and few others.

[14 gmcl83]

So I’m about to change my spark plugs what do I need to gap them or can I not gap the plugs they are the stock iridium ones ac delco.