Quote:
Originally Posted by Tony Camaro
I've got a 2013 LS I bought a year ago and I've noticed a problem developing with the engine. It had 68,480 miles when I got it and a thousand miles later it would hesitate sometimes when accelerating and the CEL would flash for a few seconds. I took it to a chevy dealer and told them about it and the guy that drove it said he didn't notice any problems.
Fast-forward today at 75k miles and it always hesitates now. I plugged my OBD2 reader while driving one day and caught a cylinder 1 misfire code. I changed all my spark plugs almost 4k miles ago. What do you think it could be? I think it's the ignition coils or the fuel injectors, but I don't know how I could test them.
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If your reader show cyl 1 misfire then you could replace #1 cyl coil or switch #1 coil with another one and see if the fault, if any shows up again, follows to the coil or cyl you switch the “bad” coil to and at that point replace bad coil.