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hammdo · 03-05-2015, 03:43 PM

The AFM lifters are an issue as miles pile up -- talk to Rhino79 from GPI -- he deals with L99s quite a bit (he works for a GM/Chevy dealer) and really suggested the lifters be replaced -- but then again, I was doing a cam and heads too -- but he did say they are seeing problems on some stock L99's.

--- TSB "Technical Service Bulletin"
#10-06-01-007C: Active Fuel Management (AFM) Engine, Valve Lifter Tick Noise at Start Up When Engine Has Been Off for 2 Hours or More (Evaluate Noise and/or Replace Valve Lifters) - (Feb 9, 2011)

Get all the info you can before you choose one way or another and you'll be happy which ever way you go...

-Don

03-05-2015, 03:43 PM	#12
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,690 View My Garage	The AFM lifters are an issue as miles pile up -- talk to Rhino79 from GPI -- he deals with L99s quite a bit (he works for a GM/Chevy dealer) and really suggested the lifters be replaced -- but then again, I was doing a cam and heads too -- but he did say they are seeing problems on some stock L99's. --- TSB "Technical Service Bulletin" #10-06-01-007C: Active Fuel Management (AFM) Engine, Valve Lifter Tick Noise at Start Up When Engine Has Been Off for 2 Hours or More (Evaluate Noise and/or Replace Valve Lifters) - (Feb 9, 2011) Get all the info you can before you choose one way or another and you'll be happy which ever way you go... -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577 Last edited by hammdo; 03-05-2015 at 03:59 PM.