Question about 1997 Chevrolet S-10 Pickup

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1997 Chevy S-10 Doors intermittantly lock and unlock uncommanded.

This ''ghost'' locking and unlocking is spuratic and will stop when the power accessories 20 amp breaker is pulled. I did try disconnecting the door switches thinking there might be a short but this did not stop the problem...could this be the grounding issue on the relay, relay going bad, or is there a short in the wiring?

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  • cool6664 May 09, 2009

    I found the relay (six pin) under the glove box on the passenger side. Replaced it and the problem still continued. I don't think it is the power accessory breaker (although it does make a clicking noise when the switches are used).

  • cool6664 May 09, 2009

    Next stop is to look for a shorted wire maybe in the door jam.

  • cool6664 May 09, 2009

    Good idea...however this model does not have that function...but it does have a keyless entry system that could be causing the problem. I do not know where the relay or conrol circut for that is...nothing in the Haynes manual.

  • cool6664 May 12, 2009

    Found the remote keless entry module under the dash on the drivers side...right behind the scan tool connection point. Disconnected and the intermittant problem stopped but now the driver door will not fuction electrically. the relays in the moduale are chattering when it is plugged in. Will see if the dealer has replacement module.

  • cool6664 May 12, 2009

    Found the keyless entry module right where

    cgyver468 said it would be. It's relays were chattering. when disconnected the ghoast problem stopped but the driver door will only opperate manually...passenger side is okay...will have try a replacement module nex

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Try reprograming the auto locking feature,you will need the owners manual for instructions to do it,you should be able to turn off the auto-locking part of it,like when you put it in gear and the doors automatically lock.

Posted on May 09, 2009

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2
Activate the door lock switches to the lock and unlock positions.
Do both rear passenger doors lock and unlock?
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
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Is there only one door lock actuator that is inoperative?
YES - Go to Step 6
NO - Go to Step 4
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Are the rear door lock actuators inoperative for both lock and unlock?
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NO - Go to Step 5
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No - Go to Step 10
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NO - Go to Step 25

Some of these steps can be bypassed because you say they worked after replacing the relay .LOCK RELAY ? right .

7
With a test lamp connected to a good ground, probe the door lock actuator unlock circuit at the door lock actuator harness connector.
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NO - Go to Step 26
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NO - Go to Step 22
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Remove the rear door lock relay.
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