I am about to take on a job for a friend to fix his 2001 Silverado. I wanted to get some opinions on it first though... he has roughly 110K on the clock and as far as I know the power train is all original on the truck. Its been burning oil for about a year, but has recently progressed to the point where he claims noticeable performance decrease. At first I wanted to just take off the heads and have everything ported, install new valves, etc. and call it a day... but after reading more about the GM piston slap problem, Im curious just how bad the cylinder walls are scored and if that might be part of the issue.

That said, we are now looking at reman and lightly used engines and planning on just doing an engine swap... what do you guys think?

2001 LS engines used a poor designed ring package and GM came up with a better second scraper ring and better oil ring expander. in the fix they did not even change the top ring so the engine did not have to be broken in again