Lost my motor today

[CarlC]

Originally Posted by carkrazy1987

The low compression could be froma bad valve. I work for gm, on the heavyline side, and very rarely that stock engines loose pistons or block damage. I see more often on 4.8, 5.3, 6.0 is a valve seat burnt. I have 2 6.0 and a 5.3 with burnt valves on the floor nxt to my tool box. One actually has a burnt exh valve on cyl #7 lol. What I'm trying to get at, hopefully they did a leak down test also, and not just going on a compression, could save u money.

Thanks for the practical side of this. It's always good to know what the long-term weaknesses of a system are.

In that light, at 155k how is the overall condition of a well maintained 5.3 - 6.0 that sees little towing/heavy-duty use? My wifes '05 5.3 Silverado 1500 runs like a watch, does not burn oil, and has had zero problems, so I'm hesitant to sell it. The instrument gauges are another story.