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Oil pressure switch not working properly?

Tiny
STEVE620
  • MEMBER
  • 2007 GMC ENVOY
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 116,629 MILES
My oil pressure gauge started to go off the scale on the high side every now and then, now it just went all the way around pointing to about 5 o clock. I just installed a new pressure switch. When I started the truck up the needle did a little wiggle and it was just off the scale. When I shut truck off needle just sits at the same spot. Any advice?
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Friday, December 29th, 2023 AT 12:06 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,949 POSTS
Yep, the oil pressure gauge needs to be replaced but on this video, it is internal to the cluster which I have seen people disassemble the cluster and just replace the gauge which I believe you can get on Amazon. If not, you will need to get a rebuilt or used cluster which you can find by searching Ebay. Here is how to remove the cluster. Check out the images (below). Let us know if you need anything else. You might want to try to disconnect the battery overnight that can sometimes fix it.
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Friday, December 29th, 2023 AT 12:40 PM
Tiny
STEVE620
  • MEMBER
  • 60 POSTS
Thank you.
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Friday, December 29th, 2023 AT 4:46 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,949 POSTS
You are welcome, please use 2CarPros anytime we are here to help.
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Saturday, December 30th, 2023 AT 11:33 AM

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