warriorpluto

iTrader: (2)

I bought an 2007 Yukon Denali with 113k miles. Was theft recovery. I've been driving it since March. Since day one I've always heard maybe a slight rod knock but it's never gotten any louder. Cold start and settled idle you won't hear anything but when it warms up it knocks on the passenger side. Then I drive it for five minutes and it's almost completely gone but I still hear a very very faint knock over the fans. Can barely hear it once it's been driven. Does this everyday. I beat on it every now and then to keep carbon build up out. I imagine if it were a rod the engine would have died a month back wouldn't it? Raced a challenger last night and kept up with his fender. No change in noise.

G Atsma

You might want to check torque converter bolts, though they are usually pretty consistent whether warm or cold. Just an idea.