05 Envoy lifter issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**richard2717** · 03-20-2026, 08:54 PM

My wife drives an 05 GMC Envoy Denali with the 5.3 engine. Roughly 145k miles on clock. It is apparently the 1st year of dod afm. She has been complaining of a loud tapping coming from the engine occasionally. When it is tapping it is down on power as well. When not tapping runs fine.

Reading up on it it says half the lifters have springs on the bottom of them for the afm and over time get stuck. I am deaf so I don't hear it obviously but she says it is getting to be more often now. I just changed the oil the other day and half expected to see metal in the old oil, but there was none that I could see.

I had a local shop look at it and the only offer they had was a new Jasper reman to the tune of 12K installed. Not happening. They would not even entertain opening the motor. Still driving the car 300 miles per week at this time.

I guess my question is would new lifters be an ok choice if I decide to fix and would it require changing the cam as well or could new lifters be used on the existing cam? I have no experience with the ls platform. This thing is AWD so I would rather do it in frame vs pulling the motor.

What would you do, fix the engine or get another vehicle for her? Car is in great shape other than this. Just replaced front hubs & axle shafts a month ago.

Thanks
Richard

03-20-2026, 08:54 PM	#1
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,401	05 Envoy lifter issues My wife drives an 05 GMC Envoy Denali with the 5.3 engine. Roughly 145k miles on clock. It is apparently the 1st year of dod afm. She has been complaining of a loud tapping coming from the engine occasionally. When it is tapping it is down on power as well. When not tapping runs fine. Reading up on it it says half the lifters have springs on the bottom of them for the afm and over time get stuck. I am deaf so I don't hear it obviously but she says it is getting to be more often now. I just changed the oil the other day and half expected to see metal in the old oil, but there was none that I could see. I had a local shop look at it and the only offer they had was a new Jasper reman to the tune of 12K installed. Not happening. They would not even entertain opening the motor. Still driving the car 300 miles per week at this time. I guess my question is would new lifters be an ok choice if I decide to fix and would it require changing the cam as well or could new lifters be used on the existing cam? I have no experience with the ls platform. This thing is AWD so I would rather do it in frame vs pulling the motor. What would you do, fix the engine or get another vehicle for her? Car is in great shape other than this. Just replaced front hubs & axle shafts a month ago. Thanks Richard __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.



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