Oil pressure

This is bartmil again. Thanks for the reply, hope further research helps. Just in case it is important, after both of the long distance drives, that precipitated the oil spills, I did not start the cars again until the next day. Again thank you for your response.

I hope this is how you repost a question.

Attention Chev experts:

1999 GMC Yukon oil pressure
My 1999 GMC Yukon (gas, not diesel) has an oil pressure problem. After a longish drive (3 hours) at relatively high speeds, the oil filter blew out when I went to start the car the next day. All the oil leaked out into the driveway in less than a minute. I took it to my mechanic, who replaced the oil pump, but was worried about the original cause. He had me monitor the oil pressure gauge carefully, over the next few weeks, and there were no further problems (also no long distance drives). A month later, I made another long trip (6 hours) at highway speeds and the next day after this trip, the same thing happened. I started the car, the engine immediately made a loud noise, and as I turned the car off, all the oil poured out into the street. I was away from home, so a local mechanic replaced the oil filter, which was damaged in the blow out and told me that with slow and steady driving home (I went 45-55), it should make it, but that the high pressure problem still exists and I need to find out the original cause. I live in a very remote area, and although I trust and like my mechanic, he isn't equipped for lengthy and complicated puzzles. Just in case it is important, after both of the long distance drives that precipitated the oil spills, I did not start the cars again until the next day. Again thank you for your response. Any information would be helpful, Thanks.

Asked by bartmil

Thank you. At present, the oil gauge reads normally. After the first blow-out, and the oil pump replacment, my mecahnic had me monitor the gauge closely for a while and it was fine. Enough time had passed before the second long trip, so that I didn't watch the oil gauge continually on the way down, and didn't notice if there were any changes. On the way back, when I went slow and easy, it was fine. I will take these answers to my mechanic and see if this helps. As is probably obvious, I have no knowledge of car mechanics and only now, as a kind of old woman, since my husband's passing, have I had the sole responsibility of taking care of a car. So thanks, again, and I will see what my mechanic says.