Question about 2000 Chevrolet Blazer

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2000 Blazer, no power to seats. I cannot locate a fuse in side panel on dash inside drivers door or the box under the hood. Someone told me there is a separate relay under the dash near steering column? Does anyone where switch or relay is that controls the power seats?

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  • michaelbradn Dec 11, 2009

    My problem is I could not identify a fuse in the box to check - side dash box mor undr hood, and the guy in parts at chev dealer couldn't either?


    Is fuse in box under hood?


    Or, is fuse in side desk box.?


    What's fused labeled as because it isn't clear..


    THX

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2 Answers

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  • Chevrolet Master
  • 83,624 Answers

It is not a fuse it is a circuit breaker, it is in the dash fuse box.
There have been many of these with wet carpets on the left side. The wires run under the rug to thepower seats seat. I've seen a few of these where the orange power wire to the power seat has actually rotted from water under the rugs! If there is no voltage to any wires at the switch, remove the kick plate the lift the rug to see if this may be your problem.
here is a wiring diagram.
2000 Blazer, no power to - 1a33ac4.gif

Posted on Dec 11, 2009

  • Marvin
    Marvin Dec 11, 2009

    This is a common issue so I will Post this reply to the same problem from a Blazer forum.



    I've posted a few responses on this one already, so will respond here as well. I had the same problem, power seat would not move. I checked the voltage at the two power plugs located under the seat, and found that I only had 10.9vdc present. My seat was all the way back as well, so it is possible to removed the seat in this position. There are plastic covers that mount on the seat bolt studs, just pry straight up on them with a large flat blade screwdriver and they will pop off (on the back two posts, my covers popped up enough for me to squeeze a 15mm open in wrench underneath them to get on the nuts).

    Once the seat is out, peel back the carpet enough to expose the floor on the drivers side.You will see a plastic channel that is run under the carpet that houses bunch of wires. Open the channel, pull out the wires and look for the reddish/orange wire. It will feed into a connection with three additional wires of the same color. The single wire is power from the fuse box, the other three wires then feed power down to the two connectors located under the seat (one is for seat movement, the other for lumbar). Not sure where the third wire leads.

    Anyway, that connection where the one wire connects with the other three was severely corroded. I cut out the bad wires,spliced in some new wire, and this gave me12.5vdc at my plugs under the seat. I reinstalled the carpet and seat, plugged in the connectors, and the seat worked great.

    Thor, your problem is with the movement switch.The hot wire from the plug feeds a connector on the back of the movement switch. The switch applies two hot leads to each motor. One hot lead feeds reverse movement, the other forward movement. With the switch in the neutral position, both leads to the motor are hot, which locks it in place. Moving the movement switch in one direction removes one hot leg to the motor allowing it to move in that direction.I would recommend that you ever so gently remove the movement switch from the backing plate that houses the wires, clean the copper posts, and then reinstall. It may be just a bad connection. If this doesn't do it, you may need to replace the switch.

    You can be adventurous and try opening up the movement switch itself. But be forewarned, it contains a bunch of copper plates that slide to make contact with other plates. Be very careful that you don't let these fall out of place. Mine did, and it was like a jigsaw puzzle to put back together. It took numerous tries on my part before I got it back together correctly. You can use an ohm meter to check it's operation as well.

  • Marvin
    Marvin Dec 11, 2009

    there is no fuse for the power seats, it is a circuit breaker, a silver metal part about double the size of a fuse in the passenger compartment fuse box, make that clear in original post, did u read it? please read all that i have posted, thanks

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  • Chevrolet Master
  • 17,638 Answers

There is a problem with water getting under the rugs on these and causing corrosion problems and the wire rots out. The fuse is in the box and you can test it with a light or a meter. Then you need to pull the kick panel off and lift the rug especially if it gets wet and check the wires that are there. Chances are that you will find the rotted wires.

Posted on Dec 11, 2009

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1 Answer

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