Jump to content



Photo
- - - - -

Driver Door Locks But Won't Unlock


This topic has been archived. This means that you cannot reply to this topic.
3 replies to this topic

#1 chadmills

chadmills

    Enthusiast

  • Newbie
  • 2 posts

Posted 18 September 2008 - 09:48 AM

Hey everyone. I've searched around on the forum but can't seem to find anything on my particular problem. I have a 2004 Silverado Crew Cab. Yesterday, my driver's side door quit unlocking.

When you push the unlock button, all other doors unlock just fine. Just not the driver's door. When you push the lock button, all doors lock including the drivers door. Windows, mirrors, etc (all other functionality on drivers door switch panel) work fine.

I took the door panel off, and the actuator doesn't even try to move when unlocking. It doesn't make any noises or anything. But when you are locking the door, it works perfectly. So I am thinking it's not the actuator.

The same results happen with the keyfob remote. Push unlock once, lights flash, etc as normal, however drivers door doesn't unlock. Push it again, and all other doors unlock just fine.

Does anyone have any troubleshooting tips to help diagnose this?

Thanks in advance for any advice.
Chad

#2 95Sierra2500

95Sierra2500

    Senior Enthusiast

  • Member
  • 1,046 posts
  • Location:Clio, MI

Posted 18 September 2008 - 10:19 AM

Sounds like the door lock solenoid is failing. It still has enough strength to lock the door (gravity probably helps here) but not to unlock it.

At least you didn't have the issue I did - door wouldn't lock or unlock and couldn't put the window down because the rivets that hold the solenoid to the inner door panel broke.
1995 Sierra 2500 SLE 4x4 - ext. cab, long box, 350, auto, power everything...beater for the winter

1998 Grand Prix GTP - Just a V6, but it'll hang with most V8s..whoops a bunch too with exhaust, intake, and a smaller pulley

1968 Firebird - work in progress, looking for 11's all motor

1999 GMC Jimmy - The wifey's ride

#3 DofD

DofD

    Senior Enthusiast

  • Member
  • 2,651 posts
  • Location:Victoria, BC
  • Gender:Male

Posted 18 September 2008 - 11:45 AM

I would try using a multimeter on the solenoid to see if it is getting a signal to unlock.

BTW. Welcome to GM Trucks! :dunno:
Posted Image
Now: 2009 Tahoe LTZ, 4x4, 5.3L - Yes there are PICS
Then: 1997 Tahoe LT, 4x4, 5.7L
Before Then: 1990 Silverado RC Sport Side, 4x4, 5.7L
Member of the Red Truck Club

#4 chadmills

chadmills

    Enthusiast

  • Newbie
  • 2 posts

Posted 18 September 2008 - 03:57 PM

I would try using a multimeter on the solenoid to see if it is getting a signal to unlock.

BTW. Welcome to GM Trucks! :dunno:



I don't think it's the solenoid. The main reason is that my tailgate lock is connected to the same wires and it quit working too. So I don't think its getting the "unlock" signal at all.