Originally Posted by PowerSurge
The piston slap in the GM engines did cause long term problems. Primarily high oil consumption problems from ‘99 to ‘03. Not to mention, GM has had a ton of problems with their smaller engines that have variable cam and valve timing. The only reason GM waited so long to go to that setup in the trucks was they don't sell as many as Ford and they didn't take as big of a hit to their CAFE numbers.
Sorry you're going through this Navi. It sucks to pay a ton of money for something like this and deal with problems.
Where did you hear that the piston slap caused oil usage? I've seen oil usage in lots of them but I was under the impression that it was from buildup in the rings similar to Toyota engines with oil consumption or old Saturn's. Reinforcing my thoughts on that my friend has an 01 with loud piston slap cold and it uses no oil. I have a 5.3 from a retired work truck that used 2-3 qts per oil change yet it had zero piston slap. My current work truck used a qt and a half between oil changes and it's quiet.
The noise from those doesn't seem to have anything to do with oil consumption in my experiences. Yours could be different.
The piston slap in the GM engines did cause long term problems. Primarily high oil consumption problems from ‘99 to ‘03. Not to mention, GM has had a ton of problems with their smaller engines that have variable cam and valve timing. The only reason GM waited so long to go to that setup in the trucks was they don't sell as many as Ford and they didn't take as big of a hit to their CAFE numbers.
Sorry you're going through this Navi. It sucks to pay a ton of money for something like this and deal with problems.
Where did you hear that the piston slap caused oil usage? I've seen oil usage in lots of them but I was under the impression that it was from buildup in the rings similar to Toyota engines with oil consumption or old Saturn's. Reinforcing my thoughts on that my friend has an 01 with loud piston slap cold and it uses no oil. I have a 5.3 from a retired work truck that used 2-3 qts per oil change yet it had zero piston slap. My current work truck used a qt and a half between oil changes and it's quiet.
The noise from those doesn't seem to have anything to do with oil consumption in my experiences. Yours could be different.