Fuses.
check relays in the power distribution center. Fuel pump, Eatx and Autoshutdown relay. Also check the fuses that go to them relays.
Check the fuel relays there are two of them on the driver side fender under the hood in a small plastic cover.
The fuel pump relay is located in the back of the glove compartment. The relays under the hood should be for the AC compressor and the HVAC blower motor high speed. Be sure to check the fuses also.
first check your fuses and fuel relays make your power to the pump. check the fuel reset swich. i good manual would be a good start..
Check fuses, relays switches etc. Probably best to get a wiring diagram and follow the circuit.
First check all fuses and relays, get wiring dia. from owners manual and you can swap them out for known good ones in non essential circuits (relays) the fuses you can check visual, if those good see if your vehicle has an inertia switch since these can be reset and most do, make sure anti theft (flashing light) not activated. No power and no pressure are not the same thing, if you have no pressure and are assum9ing no power, you may just have a failed fuel pump.
Check ground. if that's ok, use a test lite to see if it is hot (hot wire). If it is, pump is shot.
check to make sure fuel pump is working. then check to see if fuel is getting to the fuel rail, then check for spark, if you have spark, compression and fuel it should run.
Overload? Excessive resistance (bad fuel pump)? Short to ground in one of the power wires? -------------- check your wiring to the fuse. ALso check your relays
Check the three relays in the glove compartment. One of the three relays is for the fuel pump, the others are for the horn and daytime running lights. If your vehicle has power door locks there would be a fourth relay in there.
A 2001 Chevy Blazer does not have a carb. It is fuel injected and has a throttlebody. If the fuses and relays check okay and the fuel filter has been replaced, I would suspect the fuel pump has failed.
Check your relays first. The fuel pump is inside the fuel tank.