If you're experiencing fuel delivery problems with your Trailblazer, the problem likely lies elsewhere. It could be:
* A faulty fuel pump: This requires replacement.
* A clogged fuel filter: This needs to be replaced or cleaned.
* A problem with the fuel pump relay: This might need replacement.
* Low fuel pressure: Could be caused by a variety of issues requiring professional diagnosis.
* A faulty fuel pressure sensor: This needs to be replaced.
* Issues within the car's computer system: A scan tool is needed to diagnose.
If your Trailblazer isn't starting or running properly due to suspected fuel issues, you should take it to a qualified mechanic for diagnosis and repair. Trying to "reset" a non-existent switch won't solve an underlying mechanical or electrical problem.