Replacing The Oil Pump Pickup Tube O-Ring On a 2011 Suburban

On this episode of FTP Speed Shop we try and solve the problem of random Zero oil pressure on our 2011 Suburban gauge. We start by pulling the oil pan off and replacing the oil pump pickup tube o-ring. We get that all put back together and take it for a 20 min test drive and the gauge still drops the oil pressure down to 25 psi and randomly falls to zero at idle. So back to the garage to pull the oil pressure sending unit and install a manual gauge, and that is when we find out the sensor had failed after only 7 months and was allowing oil to pass through the sensor in to the wiring plug/clip. We replaced the sensor and the oil pressure has been perfect ever since.

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