The windshield wipers on my Chevy Blazer 97 stopped working,just makes a sound, but not moving? What do I need to check/replace?

These have an inherent problem with the motor control board. You can replace the board separate from the motor. There should be plenty of youtube videos out there to guide you.

Possible wiper linkage has broken/seperated from wiper motor. The wiper cowling covering the linkage assembly will need to be removed to inspect/repair

sounds like a wiper motor or might be a bad ground try to tap on the wiper motor with a hamer and is it starts to move you will need to replace it

Go to the link please. How To Install Replace Windshield Wiper Arm 1996 2013 Chevy Express GMC...

I had to change my wiper motor on my 97 blazer. The relay should be in the fuse box, that is under the hood.

its located on the wiper motor.there a black removeable cover thats held on by some screws .remove that and it right there

Open the cap at the end of the windshield wiper arm at the cowl of the Blazer. This will reveal the bolt that secures the wiper arm to the wiper linkage.
Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later.
Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4pQJ39h

3 Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4pJlPaV

2 Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later.

3 Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4p1UYyB

2 Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later.

3 Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4p1UYyB

what you are hearing is the gears in the wiper motor grinding usaly makes a kind of humming vibration and when they do work means thet caught part of the gear thats good. the you wiper motor assembly is woreout and u need a replacement. i hope this helps thanks for your timeand good luck

Check the wire harness to the windshield washer pump. The pump is located in the washer fluid reservoir, if the wires are good. Chances are the washer pump needs to be replaced and you can pick up the new pump st Auto Zone or Parts Source and they will have the step by step instructions for you to get the job done with common tools. Good luck and keep me posted.

Mine did the same thing on my S10 pick up.
I took the motor off, drilled out all the rivets, cleaned it made sure the brushes and commutator were OK, greased the drive and put it all back and no improvement. I bought a replacement motor from here: rockauto and they have been fine ever since.