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Reply To: 2010 GMC AFM lifter failelure. Replaced, still misfiring.

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.

#954434
Ryan Hottot
Ryan Hottot
Participant

Ok, new info. I pulled the valve cover back off and ran the engine briefly. Both intake and exhaust rockers for #7 aren’t moving. They both moved nicely when I rolled the engine manually after replacing the lifters. I’m thinking this is VLOM or VLOM wiring related as the AFM system stops both intake and exhaust lifters from opening the valves when activated. Make sense? Any other suggestions?

Thanks in advance,
Ryan Hottot

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