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Oil pressure gauge not working properly?

Tiny
BENCOUPER
  • MEMBER
  • 2005 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
Just replaced the oil pressure sensor. Fresh oil change with filter. The gauge in the truck reads just below 20. When driving with RPMs up the gauge will read 40. Also, to note the gauge does not read 0 when the truck is off.
Sunday, July 23rd, 2023 AT 6:51 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Did you have this problem before the sensor change? If so, the gauge sounds like it is going bad, but I would try a hard system reboot which may make them start working again.

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

and if that doesn't work the cluster will need to be replaced, this video will show you how:

https://youtu.be/_HEC44xENxw

Please go over these guides and get back to us.
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Monday, July 24th, 2023 AT 1:38 PM

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