Oil pressure

Asked by Sep 07, 2016 at 09:20 PM about the 2007 GMC Sierra 1500 SLT Ext. Cab 4WD

Question type: General

Just put in oil pump. Osu. Filter. Ect. On
my 07 gmc sierra. Still oil pressure  
runs at about 20 psi at idle..35 to 40
driving..what up with my 6.0.

2 Answers


Are you sure it's a pressure problem and not a gauge? And did you check the little screen in the oil pressure gauge pipe? They are know to plug up and give you incorrect readings. Of course you could put on a manual gauge just to be sure.


I have seen the motors with a lot of problems with the crank shaft and bearings worn out. You should have plastic gauge the bearings with had pan off that would have giving you an ideal of the motor condition

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