Getting mixed replies from gm.

[Henry95]

Do I have 2 oil pressure sensors?
2005 gmc Dmax


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[Huffy67]

As far as I know you only have one oil pressure sending unit on the driver side, lower part of the engine.


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[THEFERMANATOR]

All of the DURAMAX's as far as I know only have 1. 01-02's used an oil pressure sender mounted on the front drivers side of the block and measured oil pressure leaving the oil pump. 03+ have an oil pressure sensor mounted on the drivers side of the block about midways down it just in front of the oil cooler/filter adapter housing, and measures it after the cooler IIRC. This is why 01-02 trucks tend to show more oil pressure than 03+ trucks do. Also 01-02's used a 1 wire sender wired straight to the cluster, and the 03+ trucks used an actual 3 wire sensor wired to the ECM, and it sent the oil pressure signal out over the data bus.

 

[Henry95]

Thanks. The gm guys were really confusing me as I thought there was only one.


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