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2003 Sierra Bcm Issue

rkmeekins

By rkmeekins
in Ask A GM Technician

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rkmeekins Enthusiast

rkmeekins

Posted
Posted

I have an 03 sierra reg. cab w/onstar steering wheel controls, etc. When pass door is opened, interior lights do not activate. Also, there seems to be no power to pass. control panel- no button illumination, window or door lock will not operate. Driver side seems fine but will not operate the pass. side window or lock either. Also the keyless entry stopped working at the same time- what the heck is goin on here? This truck has been babied and well cared for. Could this be an BCM problem? Help!!

superjim Senior Enthusiast

superjim

Posted
Posted

I doubt that it is a BCM issue.

My Cadillac has a DOOR CONTROL MODULE in each door. Your truck may have something similar. I would check all wiring inside the door first.

There may also be a fuse for EACH DOOR control panel.

I would check for THAT also.

 

The next most logical thing is.. a power wire has came loose going to the control panel... a ground has come loose on the inside of the door or there is a broken wire in the big wire bundle that goes up inside the door.

Z45 Senior Enthusiast

Z45

Posted
Posted

You can disable the interior lights with botton position.

 

There is also a switch on door console that blocks passenger use of door window/door controls, for child safety on SLT models. Sorry my 04 SLT been gone for over 16 months and I don't recall exactly about the interior lights, just that is took me some time to realize why mine suddenly stopped working, I think its the interior light dimming button, push in or out deactivates the interior lights when door open.

 

Keyless entry, have you checked the batteries? If they are weak or gone bad, it will not work. Are you using the same remote you always use? Note on 2004 models each remote can be programmed differently so what works with one, may not work with the other. I found this out the hard way. I misplaced my keys one day and was in a hurry and not time to search, so I grabbed the spare set that had never been used since truck was new. I started truck and suddenly the power seat started to fold up and move toward the steering wheel pinching me up against it. The seats reverted to the shipping positions because this remote was never programmed to my settings.

rkmeekins Enthusiast

rkmeekins

Posted
  • Author
Posted
Disconnect both battery cables, touch them togeather for 10 seconds. Re-attatch cables and check functions.

 

 

Thanks for the tip! Will try in a few minutes. One other oddity I noticed only last night (in the dark) is that the driver side panel stays lit all the time- Keys in ign., keys out of ignition- all lights off- dosent matter, driver panel lights stay on continuously-WTH? The pass. door is completely dead- no illumination- no power mirror, no power window also interior light does not activate from pass. side, but will activate from drivers side- very weird!! And I did mention the keyless entry stopped working at the same time that pass. door died. Just a few more details Thanks, Kevin

rkmeekins Enthusiast

rkmeekins

Posted
  • Author
Posted
Disconnect both battery cables, touch them togeather for 10 seconds. Re-attatch cables and check functions.

 

 

Dude- u are the S____t!!!!!!!!!! Ure mojo is strong!! I tried it and everything is working as it should! Thanks so much!

 

Kevin Meekins

rkmeekins Enthusiast

rkmeekins

Posted
  • Author
Posted
Disconnect both battery cables, touch them togeather for 10 seconds. Re-attatch cables and check functions.

 

 

Hello, I tried this and everything is working now except keyless entry- checked w/ voltmeter and have 3 volts on both batteries, I am guessing that they have to be resynchronized? What is the procedure for this? The manual says to see dealer (of course) Thanks, Kevin

txab Senior Enthusiast

txab

Posted
Posted
Disconnect both battery cables, touch them togeather for 10 seconds. Re-attatch cables and check functions.

 

 

Hello, I tried this and everything is working now except keyless entry- checked w/ voltmeter and have 3 volts on both batteries, I am guessing that they have to be resynchronized? What is the procedure for this? The manual says to see dealer (of course) Thanks, Kevin

 

 

You might try this link.

 

Keyless programming

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