Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2010 GMC AFM lifter failelure. Replaced, still misfiring. › Reply To: 2010 GMC AFM lifter failelure. Replaced, still misfiring. April 18, 2020 at 4:06 am #954339 Ryan HottotParticipant Thanks for the replies. I will try to get to the compression test tomorrow. I’ll update with the results.