The other day I noticed a large puddle of transmission oil under my 2000 K3500, it’s never leaked before and it’s been sitting for a couple weeks so I’m not sure when the puddle appeared. I got under it and it appeared to be leaking from the gasket for the pan. I go to check the oil level and it shows that it’s way over filled. I’m pretty sure I had checked that earlier this year and it was at the right level so I was really confused. I drained some oil until it showed right at the “cold” level on the dipstick. I took it for a drive to get it up to temp and check the level when hot and the transmission was not acting right...had to rev to get going, not shifting right, etc, so i turned around and got home. Check the oil and now it showed super low...below even the cold oil level. So I added oil back in. I also noticed a faint smell of burnt oil once I got home. What the hell is going on?

Just for more information it’s a 454 with a 4L80E.

Edit: Just to clarify I checked the oil with the truck running but not up to temp initially.


Lowered K3500 for your time (not mine)

Illustration for article titled Need some help from the oppo hive mind

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