2002 Chevy Tahoe sputters and stalls out while driving.....

It sounds like you may have an issue with the fuel system or ignition system in your 1999 Chevy Tahoe. If it was running fine before you filled it with gas, then it's possible that the fuel pump or filter is clogged or faulty. If the fuel pump is unable to deliver fuel to the cylinders, the engine won't start. You could also have an issue with the ignition system, such as a faulty spark plug or coil. You may want to check the spark plugs and coils to make sure they are in good condition and that they are sending a spark to the cylinders. Additionally, you may need to check the fuel filter and fuel pump to make sure they are functioning properly.

1999 chevy tahoe stalled while driving now won't start. - Fixya
https://www.fixya.com/cars/t29915407-1999_chevy_tahoe_stalled_while_drivingDriving Car Engine Stall
https://www.underhoodservice.com/diagnosing-intermittent-stalling-issues/Why is it when driving the RPM gauge drops or jumps up? - 1999 ...
https://www.ifixit.com/Answers/View/97565/Why+is+it+when+driving+the+RPM+gauge+drops+or+jumps+up

it is a distinct possibility as some dealers use a E added fuel to rip motorists off. It is also a possibility that there was water in the fuel so I would have the fuel filter changed as a precaution. Run the fault codes to check for reported faults.

Have a mechanic check the wiring to the fuel pump and test the fuel pump itself and also test the ECM and COILS

try some fuel additive that removes water and cleans injectors

Check that you are getting fuel. It sounds like the fuel pump is bad.

I think you should head to a mechanic. Sounds like you got water in the fuel system. You could possibly resolve the issue by filling up with a fresh tank of gas, but that could also cause more problems if there is a lot of water in there already. I'd take it to a trusted mechanic.

i would first try to replace the fuel filter.usually there filter accumalates debris in the gas tank especially if you you ru the tank close to empty.filter location needs to be traced from the tank toward the motor.you will see a cylinder inline with a strap.part usually runs around 20.00. also when you initally turn the key before start you will hear a hum for about 2 sec. this is the fuel pump pushing the fuel up to motor.so if you hear this pump is working.

Hello , does the vehical stall out after its been driving a while and the engine has reached operating temp? It may be what's called " vapor" lock. This is where the fuel is burned or evaporated in the fuel lines and the result is not enough fuel is routed to the injector system. Or you have a failing fuel psi regulator too. Thank you , Quinn

oil pressure drops when rpm's drop to .well..zero...so no... oil pressure is a result not a cause likely....did you overheat it ? drive it to 107mph and have the rev limiter kick in? does it start and run now ?