What are the 3 relays for in the glove box of a 1997 chevy blazer? I know one is for fuel pump what are the others for?

Behind glove box in relay center

There is not a fuel cut off switch for a 2004 Trailblazer. Have your fuel pump relay checked, if it is good I would look at having your pump tested.

dont understand why you posted this

The relay closest to the driver's side is the fuel pump relay. The middle relay is the horn relay. All three relays are exactly the same. So, you can switch two of them to see if they both work or not.

The fuel pump relay in my blazer is located in the rear of the glove box which means you have to clean out all of the maps and other junk to get to it. There is a plastic cover that has to be removed to expose the relay which is the right side of the two present.
You can tell if it is operating when you turn the ignition key to "ON", the relay will click and you should hear a humming sound as the fuel pump energizes.

There is no reset button on the Blazer or any GM cars for the fuel pump. The fuel pump fuse is the same as the ECM fuse at the end of the dash on the drivers side. The relay in in the glove box behind the rely cover at the back of the glove box and i think it's the middle relay out of the three that is the fuel pump relay.

Most likely that's it's going to be a bad fuel pump. The pump is reted to only be good up to 150,000 miles and anything longer then that is borrowed time.

Thank you for using fixya and good luck.

the fuse I think is under the hood in that fuse box. I know of no other way to remove the pump except to lower the tank on your model

In the glove box behind a plastic panel. There are 3 relays in there. The fuel pump is the one closest to the drivers side.

underhood relay center has fuel pump fuse

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Hello starryconstr: My name is Roger and I can answer your question. The location of the fuel pump relay is behind the glove box. Once you remove the glove box you will see a relay panel. This should be a 3 relay panel. The relay on the left side should be the fuel pump relay. Please rate the quality of this answer as this is how we know you have received the information you wanted. Thank You for using FixYa. Roger