Please show me where the oil sending unit is located on a 1997 1500 GMC sierra 1/2 ton 5.7 vortex engine

SOURCE: Can not find oil pressure sending unit on engine.

yes it will be on the lower part of the engine block. i believ on passenger side.

SOURCE: Location of oil pressure sending unit on 2003 GMC 4.3L

2 the right of dist. cap

SOURCE: 2003 GMC Sierra Knock sensor and oil pressure??

the knock sensors are located below the intake plenum,or,upper intake manifold as some call it, they screw into the lower intake, the front one is sensor 1, the rear is sensor 2. it is wise to change both if you have some miles.since you are going to be buying a gasket set to do this job.the sensors are cheaper than the gaskets.

SOURCE: LOW OIL PRESSURE ON 2007 GMC SIERRA 1500. CHANGED

have it tested using a manual gage if still low then main baring ore most likely bad that would mean a over hall if is really low and bearings bad should be making rattle noise when started up first few seconds

Testimonial: "thanks alot.truck is not making a rattling noise.we did check it with a manual gauge.it read about 10 at idol. press. gets better as you incr speed"

ZJ Limited

• 17989 Answers
• Posted on Jan 31, 2011

SOURCE: 2003 gmc 2500 sierra oil pressure sending unit

Fig. Oil level sensor location on 2002-2005 4.8L, 5.3L, 6.0L

Hope this helps.