The oil pressure sending unit on a 2005 GMC Sierra
Where is the oil pressure sending unit located on a 2004 4.8 L V8 GMC?
Inside the oil pan!!!! It is part of the oil pump.
Where. Is the oil pressure switch on a 2003 yukon xl
It is right behind the distributor.
The fuel pump is located in the fuel tank and is attached to the fuel sending unit.
The oil pressure sender or switch is located at the rear of the engine, behind the distributor.
The oil pressure sending unit on a 1989 GMC Sierra is located slightly above the oil filter. You will need a flashlight to find it. It may be hard to recognize it because it should have a heat shield around it as well. Look for its wire coming down from the engine compartment and follow it to the oil pressure sending unit. Drain your engine oil and remove the oil filter to make changing the oil pressure sending unit easier.
I know in my '97 Gmc Jimmy the oil sending unit was bad when I had the same problem holding oil pressure. When I'd start my truck it had almost 40 lbs of pressure that would slowly fall off to nil unless you accelerated. Then the pressure would rise somewhat.
if its a full size pickup, with a v8, the fuel pressure regulator is in the tank, its part of the sending unit
On the 5.3 ... It's up behind the engine
It is back behind the distributor, where the distributor shaft goes into the intake.