Question about 1999 Chevrolet Silverado 1500

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Truck runs great but the oil pressure gage goes zeros out

Truck runs great but the oil pressure gage goes down to zero and the check gages light comes on. Then the needle goes back up and it turns off. Is it the oil sending unit and where is it located?

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Did you find the sending unit and was that the problem?

Posted on Nov 21, 2009

  • tallpine99 Nov 22, 2009

    I was told the sending unit is at the back of the block.It is very difficult to get at. My truck is doing the same thing and I was told I should try to clean the connectors to the sending unit and the unit its self and if that don,t work to replace it.

  • tallpine99 Dec 05, 2009

    It is on the left side at the back of the block .You will need a 1 1/16 sending unit socket,it is a deep socket.I also bought a mirror small enough to see back there. The unit was 53.00 and the socket was 13.00. It took about 20 mins ,but solver the problem. Pressure is steady.

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Yes sending unit was problem, replaced unit all good now Thanks

Posted on Mar 07, 2015

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