ON BACK OF ENGINE NEXT TO THE DISTRIBUTOR.
I'm going to add an oil pressure gauge to my 05 GTO. Where's the sending unit located on the 6.0 L engine
by the oil filter, under engine.
should be on the top back side of the engine behind the intake and to the driver side of the distributor not easy to get too
next to the timing cover near the firewall
Depending on the year, GM primarily used the oil pressure sending unit as the switch for the fuel pump. There is no reset button for a GM. There is also a fuel pump relay.
LOW OIL PRESSURE. Serious engine damage will occur if you keep driving this car in this condition. First thing to do is check oil level. If it is OK, then I would change the oil and install a GM, AC/Delco filter. If that does not correct the situation, check the oil pressure sending unit and see if the wires are connected correctly and are not loose. You could replace the oil sending unit or just take it to a professional. You may have an oil pump problem. An oil pressure test will verify this.
There's no fuel cut off switch its not like the Ford products- GM/Chevrolet's don't have it -Its the engine oil pressure sending unit that will cut off the fuel in the event of an accident
GM oil pressure senders have a pretty high failure rate. Since your van is 10 years old, and pressure senders are not too expensive, I would start by replacing your sender...there's a pretty high likelihood that you will eventually replace it anyway.
behind the upper intake manifold its rather hard to acess but its back their!
Mine is located just below and behind the distibutor cap. A real pain to get to.
Usually 1" or 1 1/16". A deep well thin wall socket will work on most vehicles. Lisle Tool # 13250 or KD Tool # 3458 will get it done on GM Vehicles
Replace the oil sending unit first and retest. GM vehicles had a lot of problems with the oil sending unit.It can be difficult to access for replacement at the rear of the engine on some vehicles and can also require a special socket. You might want to take it to your local mechanic's shop.