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View Full Version : 01 Duramax CKP sensor came apart



BruceFritts
05-17-2025, 14:39
Working on a customers 01 Sierra with the dmax 6.6... Had a code lost comms with inj mod. Mod checks ok. So went to replace CKP sensor . It fell apart when I took the mtg bolt out. Unfortunately the round part is way stuck in the mounting port .. btw I Did not pry on it Tried nearly everything to extract it. Wondering if removing the 2 bolts holding the mtg port to the cover will allow me to remove the whole port. Or will that open up a big can of worms and cause me to have to pull the entire front cover. Customer is elderly on limited funds or I would have already done that. Anybody have any input.
Thanks

DmaxMaverick
05-17-2025, 17:20
What part of it separated from what part? Is it just the plastic that separated from the brass, or did the brass break below the port (like at the O-ring groove)? If the brass broke, leaving the tip of the sensor inside the port, maybe try a spiral EZ-Out or lag bolt to get it to turn and gently pull on it. If only the plastic separated from the brass, you should be able to use the EZ-Out or lag bolt method, or pry it with a thin screwdriver. The brass is a cup shape with a mushroom head on it the plastic fits into. Look at your replacement part for a better picture of what you're working with. In any case, the sensor tip is very close the the steel reluctor wheel inside, so it won't go far if pushed inward.

As far as removing the port assy and your customer's financial position, I can't say. I don't believe it would be a can of worms, but I've never removed that part. Maybe a good topic to search on YouTube. I don't see how it could be any more simple than it appears. My concern would be more in the line of getting it sealed afterward. Perhaps RTV, if a gasket isn't available for it. My diagrams don't show it in detail, so it's hard to say. It may be a rubber-type gasket or an O-ring, which would surely simplify things.