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The oil pressure sender or switch is located at the rear of the engine, behind the distributor.
It is back by the distributor and screews into the engine just about were the distributor goes into the engine.
improper tire pressure
With ignition "ON," engine "OFF" and fuel pump running, pressure should be 385-430 kPa (56-62 psi).
Yes it will, there the same.
Pressure test
That would be the 350 or the 454
Need to know year and engine size, That will help us answer your question. it's a 7.4 454 engine in a 1996 GMC suburban
If it is a 1996 or later you can not.
13.9 to 14.3 VOLTS with engine running.
NO. A timing light will not work on that engine. You must have an obdII engine scanner to set the timing on that year.
Follow the TOP radiator hose to were it clamps on the engine and it will be under that houseing that has 2 bolts holding it to the engine.