Where are the cam & crank position sensors for a 1999 chevy suburbon 5.7?

check your distributor 5.7 s had hiccup code may read for cam or crank problem but the timing would get a little out of spec with the distrib-------------------------https://chevytrucks.org/chevy-p1345-engine-code/ --------------

Could be a bad coil, bad Ignition Control Module (what controls the ignition coil as commanded by the engine computer), or a bad crank position sensor, or cam position sensor. Or the wiring and circuits to all the ignition parts.
Often it is the crank sensor (CKP sensor)-The pcm must have this information from the crank sensor to determine spark timing. If no good signal from the crank sensor, there will be no spark.

the crank position sensor is behind the harmonic balancer and cam position sensor is just under the power steering pump

The crank sensor is inside the distributor and may also be called an HEI pickup.
Disconnect wiring harness and remove the two tork head screws and lift out. Now would be a good time to replace the rotor & distributor cap if you haven't done so lately.
I hope this helps.

I'm having excatly same problem, found this sequence to ge the car running again..turn off ign, unplug cam position sensor, crank for 2 seconds, connect cam shaft sensor, crank again and it starts like that...

2.2L engine it's located on the right side of the engine just below the coil pack.

there are three sensors on the right side, cam sensor which is higher than the other two. then there is the crank sensor right next to the knock sensor towards the bottom.
now the rest is easy. remove & replace.


4.3L engine it would have been by the harmonic balancer in the timing cover.

could possibly be either cam position sensor or the crank position sensor if the fuel pump doesnt read the signal from them it will not start

Check the fuel pump & pressure. The pressure should be 35 psi & shouldn't drop with the key off. If it does, replace the pump.

a crank position sensor could be bad or your cam position sensor could be bad

Id Try a New Crank sensor.. Lemmie know