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lifters?
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11-16-2012, 10:38 PM
Nick911
MC Fanatic
Join Date: Jul 2011
Boat: 2013 Mastercraft X25 on order, 6.0 Ilmor, Pro Package, slammed and flaked!
Location: Canada
Posts: 675
I've had two Silverados with the 5.3 am they both do this. My Yukon with 6.2 does it as well. I'm told it is common with all GM engines. I add 2 cans of Wynns Engine Tune Up after every oil change and it helps.
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