Help: 2003 Oil pressure gauge

[Kelley]

I have replaced the oil pressure sending unit on the lower left side of the engine block and had the gauges rebuilt and my oil pressure gauge still doesn't work. I get a check oil level warning when I start up and the check engine light stays on all the time. I know I have oil pressure because it is still running. Is there another oil pressure sending unit somewhere on the engine?

 

[ironmax]

You need to hook up an actual gauge to the port on your oil filter housing just to make sure. If you do have good pressure there, then you can look for other possibilities.

 

[kidturbo]

Yes verify mechanical side then move to electrical. Likely it's a broken wire near the main harness plug. Here is a link explaining it further..

http://www.duramaxdiesels.com/forum/showthread.php?t=40192