Bad pcm?

[Bad68chev]

Can anyone tell me if this looks like a bad pcm? Car is a 2012 Chevy sonic, has random misfire codes. Will run smooth then out of blue runs terrible, misfires will be on diff cylinders, sometimes cyl 2, other times cyl 1, sometimes 2 and 3 at same time according to scan tool misfire counter.I took a sample of injector control signal, sometimes it has an extra pulse which is real short. This is just cyl 4. I’m kinda new to using oscilloscope FYI.

[vasek]

Hi.
This mode of operation of the fuel injector control driver is not a malfunction.
This is the ECU's response to the need to stabilize the crank-shaft rotation.
You need to look for the cause of uneven engine operation.