I have multiple/ random misfire issues only when pulling trailer or hard acceleration up entry ramp. I was wondering if anyone sees anything wrong with this freeze frame data. Truck runs fine otherwise

 

fuel trim is normal
not sure what imap and map should be for that tps %

gm has very good misfire monitors; .view the misfire history and current monitors when the problem is occurring...post back which cylinders accumulate misfires.

 

Thanks, I have the OBD fusion app and cannot figure out how to see live misfire data as there are no enhanced extras for gm. Does anyone know the user defined pid for live misfire on gm? If not I will need a different scanner.

thanks

 

under mode 6 but not sure the pid#