[Z OH 6]

Originally Posted by lamp210

so did GM ever address the issue in the later years?

All defective 2017-2018 model oil pumps were replaced under warranty if they failed during the warranty period. All 2019+ models don't have this issue because GM corrected the defect.

[arpad_m]

Originally Posted by lamp210

so did GM ever address the issue in the later years?

Originally Posted by Z OH 6

All defective 2017-2018 model oil pumps were replaced under warranty if they failed during the warranty period. All 2019+ models don't have this issue because GM corrected the defect.

For the record, GM did strengthen the oil pump in 2019, but the issue didn't go away completely, it just became much less pervasive.

[Z OH 6]

Originally Posted by arpad_m

For the record, GM did strengthen the oil pump in 2019, but the issue didn't go away completely, it just became much less pervasive.

The fact that there's almost no failures in the 2019+ models outside of normal defect rates for any part says its fixed to me. Don't get me wrong, the Katech design is still better but the same could be said for many aftermarket parts when you start modifying a car.

[lamp210]

ok good thanks for the good answer as i have a 2024.

[mrzab]

I'm not much of a poster, usually a lurker trying to find out what I can about these great cars of ours. I watched the back and forths about the oil pump replacements and finally decided to bite the bullet and get it done. The shop was 8 miles away, and I don't think I took my eyes off the oil pressure gauge for more than 15 seconds all the way there. When i went to pick it up i asked for, and got, the old pump. The next day I took it apart and there was the crack, right where I read it would be. That engine was living on borrowed time. So thanks to all the contributors who saved me the cost of a new engine even if I could've found one.

[Z OH 6]

Originally Posted by mrzab

I'm not much of a poster, usually a lurker trying to find out what I can about these great cars of ours. I watched the back and forths about the oil pump replacements and finally decided to bite the bullet and get it done. The shop was 8 miles away, and I don't think I took my eyes off the oil pressure gauge for more than 15 seconds all the way there. When i went to pick it up i asked for, and got, the old pump. The next day I took it apart and there was the crack, right where I read it would be. That engine was living on borrowed time. So thanks to all the contributors who saved me the cost of a new engine even if I could've found one.

NICE!

[Tyrolblue67]

Originally Posted by mrzab

I'm not much of a poster, usually a lurker trying to find out what I can about these great cars of ours. I watched the back and forths about the oil pump replacements and finally decided to bite the bullet and get it done. The shop was 8 miles away, and I don't think I took my eyes off the oil pressure gauge for more than 15 seconds all the way there. When i went to pick it up i asked for, and got, the old pump. The next day I took it apart and there was the crack, right where I read it would be. That engine was living on borrowed time. So thanks to all the contributors who saved me the cost of a new engine even if I could've found one.

Can you please describe if you were seeing any symptoms of the failing oil pump.
Specifically, what kind of oil pressure were you seeing?
Thanks,
Tyrolblue67

[RobZL1]

Originally Posted by Tyrolblue67

Can you please describe if you were seeing any symptoms of the failing oil pump.
Specifically, what kind of oil pressure were you seeing?
Thanks,
Tyrolblue67

For another data point, mine was around 26-28psi and tended to vary in that range. It would occasionally drop to 24.5 or 25.

Prior to failure of the outer race/ring, it was always right at 31psi and rock solid (not 30 one day or 32 the next day, for example).