New Oil Pressure Sensor failed

[John H Daniel]

Chasing oil leaks, with the help of this forum, I changed Intake Manifold and VLOM gaskets, and oil pressure sensor and screen. I found some VLOM screws were only finger tight. The first 2 you can easily reach under the IM. My 2011 Denali- 192,000 miles- has usual issues, but nothing too scary about the oil pressure.
Got it all back together, definitely improved the oil leakge. A week later, nominal temps, just grocery getting, OP goes to 80 for a few minutes them 0.
Fortunately, I had the old sensor to do some trouble shooting and the new AC/Delco sensor had failed. Based on an awesone Youtube video about the above replacements, I left the rear sound shield off so access is much improved.
Being my first big American vehicle in many years, I continue to be annoyed at the quality of materials and techniques, but have been pleased at how easy it is to work on.
So surprisingly, the factory brand sensor failed- just one data point, but when I returned it, folks at the parts store, said they try not to use AC/Delco.

 

[Geotrash]

Good job sorting it out and thanks for letting us know what you did. For many parts on these trucks, OEM is the *only* brand I will use because the aftermarket versions don't hold up. Fuel pumps, for example.

 

[89Suburban]

Good job buddy.

 

[Fless]

Curious, did yours take the oval electrical connector, or the round connector?

 

[John H Daniel]

Curious, did yours take the oval electrical connector, or the round connector?

Round connector..

 

[John H Daniel]

As noted above, I replaced the first failed AC/Delco unit with a second AC/Delco. It failed after about a month. No more OEM parts; replaced with the store brand, CarQuest. So far so good after a couple of weeks.

For grins, I checked the pin to pin resistance on all of them. The AC/Delco units were comparable to each other, but not the old original. The CarQuest part is similar to the old one.