Oil pressure sensor connector broken wires?

1999 CHEVROLET 1500
165,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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CHARLESTUCK
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  • 66 POSTS
My engine was leaking a massive amount of oil and it was traced to the back of the engine and the oil pressure sensor (sending unit). After I replaced the sensor, I noticed that 2 of the 3 wires were missing from the connector. The connector (pig tail) is very short and located at the back of the engine, just under the firewall. It is very hard to put both hands on it at the same time. Is there a way to splice in a new connector without removing the distributor? What are the colors of the three wires?
Sep 14, 2025 at 7:07 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Yes, you can get a wiring pigtail which can be spliced on it looks like there is only one wire going to the sender, tan wire. The connector has four places for wires but only one is used, I hops this helps. Check out the images (below). Let us know if you need anything else.
Sep 14, 2025 at 6:27 PM
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CHARLESTUCK
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  • 66 POSTS
I hade the wrong sensor. I go the correct one and solved the problem. Thank you.
Feb 20, 2026 at 8:50 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Thanks for letting us know, we are here to help, please use 2CarPros anytime.
Feb 20, 2026 at 9:02 AM
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