How to replace a GM 3.8L oil pressure sending unit?

This is a simple video outlining the procedures for replacing the oil pressure sending unit on a GM 3.8L series 2 engine. This particular engine is in a myriad of General Motors vehicles like the Impala, Bonneville, and GM mini-vans. A leaking oil pressure sending unit seems to be a very common problem for these automobiles fitted with this engine.

What is the oil pressure sending unit called?

The oil pressure sending unit, also called an oil pressure switch, is a component of the engine mechanical system. The oil pressure switch monitors changes in the oil pressure.

When does a faulty oil pressure sending unit fail?

When it detects oil pressure in the vehicle, a switch trips and either the light shuts off, or the gauge becomes active. A faulty oil pressure sending unit can result in inaccurate oil pressure readings and warnings.

Is there a problem with my Chevorlet oil sending unit?

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How does an oil pressure sending unit work?

An oil pressure sending unit controls either the oil pressure light or gauge in your dashboard. When it detects oil pressure in the vehicle, a switch trips and either the light shuts off, or the gauge becomes active.

Where is the oil pressure sending unit located?

The sending unit is located on the right rear of the engine just below the power steering pump and just above the inner joint of the passenger side CV axle. The oil filter is just below it. Here is a link to the video showing how to replace this sensor. Loading…

What kind of oil pump does a Pontiac have?

The Pontiac oil pump is relatively simple. Its cast body houses two spur gears that draw in, pressurize, and disperse oil throughout the engine. A ball-type pressure-relief valve regulates oil pressure to 40-, 60-, or 80-psi depending on the unit and engine build conditions.

Where is the oil pressure sensor located on a GM 3.8L?

Do verify in you repair manual the location of this sensor. I am not sure if this location is applicable to the super charged engines. The sending unit is located on the right rear of the engine just below the power steering pump and just above the inner joint of the passenger side CV axle. The oil filter is just below it.

Where is the oil pressure switch located in a GMC?

Using tool J41712 or equivalent, install the oil pressure sensor. Tighten the oil pressure sensor to 26 ft. lbs. (35 Nm) on 4.8L, 5.3L and 6.0L engines. Tighten the sensor to 22 ft. lbs. (30 Nm) on 8.1L engines. Connect the oil pressure sensor electrical connector. If necessary, install the engine sight shield.

Where is the oil sending unit on a car?

Find the oil sending unit, which will be screwed into the engine block near the oil filter, with a single wire attached to it. Turn the vehicle’s ignition switch to the “on” position, with the engine “off.” Unclasp the connector from the unit gently, using a pocket screwdriver if necessary.

How do you install an oil pressure sensor?

Apply sealant to the threads of the oil pressure sensor. Using tool J41712 or equivalent, install the oil pressure sensor. Tighten the oil pressure sensor to 26 ft. lbs. (35 Nm) on 4.8L, 5.3L and 6.0L engines. Tighten the sensor to 22 ft. lbs. (30 Nm) on 8.1L engines. Connect the oil pressure sensor electrical connector.

What should the oil pressure be on a Chevy truck?

My 01 was around 40 psi hot idle with conventional oil and a Napa golf filter. When went to a full synthetic and a Fram ultra filter it was also around 40 psi hot idle and my lifter tap all but went away after a couple changes. So in my case, the oil and filter did not change my pressure.

How to change an oil sending unit on 2007-2014 Chevrolet?

How to change an oil sending unit on 2007-2014 Chevrolet, GMC, Silverado, Suburban, Escalade. Tahoe, – YouTube How to change an oil sending unit on 2007-2014 Chevrolet, GMC, Silverado, Suburban, Escalade.

Where is the oil pressure sensor on a car?

The oil pressure sensor will usually be located near the back and top of the engine compartment, and bolted in to the engine block, connected by an electrical clip to the car’s computer/electrical system. However, in some vehicles, the oil pressure sensor may be behind the intake manifold and may not be readily visible.

How can you tell if your oil pressure unit is failing?

Oil Pressure Reporting Erratically This is perhaps the most telltale sign of a malfunctioning sending unit. If your oil pressure gauge or engine oil warning light have very sporadic behavior—the gauge moving from low to high or high to low randomly or the light coming on and off frequently—you can be sure there’s a problem with the sending unit.

How to replace a GM 3.8L oil pressure sending unit?