Jamieat

You have to pull the MODE6 data for misfire counts. Itll show you each cylinder, and total misfires each, for the last 10 drive cycles.

carl292

ok update:
I have a SCT tuner with VPM tunes on it from Justin and I’ve have the 87 performance tune on since almost new. I put it back to stock due to going to locksmith for 2 new PAT spares and that’s when the truck was bucking. When I got home put the tune I always had on it back on and it hasn’t bucked since (???)
whatcha guys think? Thanks