The factory Delco pump did not come with the o ring for the end of the oil cooler pipe, do I ignore it and move on or do I trip up to the GM dealer and try to order one?
If you think you can get the old one back in without cutting it, go for it. Most times they are swollen and either don’t go in or cut themselves as they go in.
I have not pulled the tube yet, the one on the top of the bypass tube was so swollen it literally just fell off of the pipe, I am going to town to see if the local chevy dealer has one before I pull it.