winnemucca

While surfing Youtube one day I came across Kyle Spicer's video on the 3.0 LM2 Duramax TSB 22-NA-027. I had been experiencing what I thought was excessive oil consumption. I had already learned about bulletin 21-NA-272, which discusses reasons why there might be excessive oil consumption and lays out exactly how much oil use has to occur before it's considered excessive. My 2020 Sierra 1500 AT4 with the LM2 (77k miles) was right at the limit of oil consumption, meaning it didn't go over the line to be considered "excessive". Besides, the 21-NA-272 doesn't say what should happen if I did meet the criteria. Kyle's video got me wise to the game, and told me about a new bulletin. I raced outside to check the sticker on the side of my valve cover and, yes!, the code met the parameters laid out in 22-NA-027. So I called my dealer and told them about this. They had no idea what I was talking about, and told me to bring it in. They took 4 hours to determine that yes, my truck met the criteria for a new camshaft cover. It was there all week, just picked it up today. We'll see how it goes in terms of oil consumption. Oh, and right before I took it in I got a CEL P133a, for glow plug #3. Once they looked at the CEL, they found that all the glow plugs needed to be replaced, so they did that too. None of this was billed to me, it was billed to GM. So, if you have an earlier LM2, watch the video.

With only 7,200 mi, my new truck is at the dealer service center right now because there was a rear main seal failure, and massive oil leak. How in the heck could this happen to a new car?