in what country? USA?
Makin GM Atlas engine
atlas LLV engine.
did you look at the engine photos at isuzu dot com yet.
that be free, google "OEM Isuzuk parts."
bingo , all parts in the car, shown.
gas engine. wiki facts.
The LLV (also called Vortec 2900) is a 2,921 cc (178.3 cu in straight-4 DOHC engine, with a 95.5 mm (3.76 in) bore and a 102 mm (4.0 in) stroke. It replaced the LK5 and produced 185 hp (138 kW) at 5600 rpm and 190 lb·ft (258 N·m) of torque at 2800 rpm. Engine redline is 6300 rpm.
first off runs off the cam so must be at the cam.
there are how many ends to cam, answer 2 per cam
just a casual look on all DOHC engines, and bingo the sensor is there, 3 wires or 4, usually
most cam sensors are HALL sensors. (electronic, not mag 2 wire)
here it is, shown in every auto store in USA>
cant find this? just by looking at cam ends. (all 4)
suzuki dot com online suxs. (sensor has no drawing page)
but my guess top right front of VC? (valve cover)
i bet now you can tell me.... pick a corner, and find it?