How do you remove the power lock switch?

Discussion in 'Interior' started by Goldie Driver, Nov 6, 2018.

  1. Goldie Driver

    Goldie Driver Full Access Member

    Posts:
    213
    Likes Received:
    97
    Joined:
    Mar 19, 2018
    Location:
    Houston, Texas
    First Name:
    Britt
    Truck Year:
    1980
    Truck Model:
    GMC K1500 Suburban
    Engine Size:
    350
    Hello, All !
    The truck is the 80 Suburban in my signal- the driver's side power lock switch seems to have given up the ghost for the lock position.

    Unlock works fine, and so does the passenger side switch.

    I'd like to try cleaning it, or if worse comes to worse swapping the 2 sides.

    Not sure if it just pops out or not - don't want to mess up the door panels.

    Searches revealed nothing.

    Thanks!

    Britt
     
  2. Blue Ox

    Blue Ox Turning Diesel Fuel Into Fun

    Posts:
    892
    Likes Received:
    772
    Joined:
    Mar 27, 2018
    Location:
    LI-NY
    First Name:
    Derek
    Truck Year:
    1985
    Truck Model:
    K20HD
    Engine Size:
    6.2L
    I'll preface this with "It's been a while" but my recollection is that if you can get a thin blade behind the switch flange from the side you can compress the spring clip that holds them and carefully work them out. Otherwise it's pull the door panel.
     
  3. PrairieDrifter

    PrairieDrifter Full Access Member

    Posts:
    1,055
    Likes Received:
    226
    Joined:
    Dec 28, 2014
    Location:
    North Dakota
    First Name:
    Mason
    Truck Year:
    84,79,70
    Truck Model:
    Suburban k10, bonanza k10, c10
    Engine Size:
    350, 350, 350
    In my 79 they’re slopped out so they just pull out pretty much
     
    Last edited: Nov 7, 2018
  4. Goldie Driver

    Goldie Driver Full Access Member

    Posts:
    213
    Likes Received:
    97
    Joined:
    Mar 19, 2018
    Location:
    Houston, Texas
    First Name:
    Britt
    Truck Year:
    1980
    Truck Model:
    GMC K1500 Suburban
    Engine Size:
    350
    That seems to be the way it is now - at least now on the driver's side.

    Got it out and took it apart to clean the contacts - no difference. 20181107_193411.jpg

    Anyone have one they can spare ?

    Sounds like the guts can be swapped out - the chrome bezel is different thickness on the 79 thru 81 based on the LMC catalog.
    They jump past them ...
    :(
     
  5. Goldie Driver

    Goldie Driver Full Access Member

    Posts:
    213
    Likes Received:
    97
    Joined:
    Mar 19, 2018
    Location:
    Houston, Texas
    First Name:
    Britt
    Truck Year:
    1980
    Truck Model:
    GMC K1500 Suburban
    Engine Size:
    350
    Well, I tried using a paper clip on the harness today to actuate the lock.
    Works fine for unlock, but will not lock.
    I guess there is a wire issue behind the door panel on the driver's side as the lock functions fine from the passenger side switch.

    Broken wire, maybe ?

    I can't think of what else would cause am instant 1 operation/1 side only failure.
     
  6. 78c10bigten

    78c10bigten Full Access Member

    Posts:
    2,814
    Likes Received:
    1,319
    Joined:
    Apr 12, 2017
    Location:
    pennsylvannia
    First Name:
    ted
    Truck Year:
    1978
    Truck Model:
    C10 BIG TEN
    Engine Size:
    350
    Did you try the paper clip trick with door open or closed? Maybe its a pinched wire in the jamb...
     
  7. Goldie Driver

    Goldie Driver Full Access Member

    Posts:
    213
    Likes Received:
    97
    Joined:
    Mar 19, 2018
    Location:
    Houston, Texas
    First Name:
    Britt
    Truck Year:
    1980
    Truck Model:
    GMC K1500 Suburban
    Engine Size:
    350
    Open- the switch does not work when the door is closed, either.

    LOL- a little folded over duct tape on either side of the switch is keeping it in now.:anitoof:
     
  8. Snoots

    Snoots Supporting Member Supporting Member

    Posts:
    1,750
    Likes Received:
    1,824
    Joined:
    Jan 23, 2013
    Location:
    Georgia
    First Name:
    Roger
    Truck Year:
    1973
    Truck Model:
    Jimmy Sierra
    Engine Size:
    350
    So the passenger side switch will lock & unlock?
     
  9. Goldie Driver

    Goldie Driver Full Access Member

    Posts:
    213
    Likes Received:
    97
    Joined:
    Mar 19, 2018
    Location:
    Houston, Texas
    First Name:
    Britt
    Truck Year:
    1980
    Truck Model:
    GMC K1500 Suburban
    Engine Size:
    350
    Yes, and it will function the driver's side lock for both lock and unlock.
     
  10. Snoots

    Snoots Supporting Member Supporting Member

    Posts:
    1,750
    Likes Received:
    1,824
    Joined:
    Jan 23, 2013
    Location:
    Georgia
    First Name:
    Roger
    Truck Year:
    1973
    Truck Model:
    Jimmy Sierra
    Engine Size:
    350
    Here's how I see it:
    Since I don't have the correct schematic for your vehicle I'll be making a 'best guess'.
    You'll need to have a volt meter or DMM.

    Concentrating only on the drivers' side, remove the connector from the switch.
    Use your test instrument to find the +12 wire in the connector (orange?).
    Now set the test meter (assuming you have one) to OHMS.
    Place one lead on the switch terminal that would connect to the +12, LEAVE IT THERE, and the other lead to EITHER of the other switch terminals.

    With your third hand, (or if you have a helper) move the switch to either position (LOCK or UNLOCK). One of the positions should cause the meter to read zero. Since you already know that the 'unlock' works let's assume that that's OK.

    Now go to the other terminal and repeat the above test.

    If you don't get a zero reading then you have a bad switch. (BTW, they CAN be rebuilt).

    If you get a zero reading then the problem lies between the connector and the door lock relay.
    We already know the relay is good because the passenger door switch works and the switches are wired in parallel.

    IF there is a light blue wire at your switch connector, that should be your 'LOCK' wire. If not light blue then the wire that connects to the LOCK position on the switch is your culprit.

    I would suspect a connector on the wire, not the wore itself unless the wire has become damaged.

    Also remember that there is a connector from the door to the wire harness under the dash. If not just inside the vehicle near the kick panel, it may be inside the boot that runs from the door to the pillar.
    Be sure to check that connection as well.
     
  11. Goldie Driver

    Goldie Driver Full Access Member

    Posts:
    213
    Likes Received:
    97
    Joined:
    Mar 19, 2018
    Location:
    Houston, Texas
    First Name:
    Britt
    Truck Year:
    1980
    Truck Model:
    GMC K1500 Suburban
    Engine Size:
    350
    Snoots - thanks for the tips ! :waytogo:
    If I can get a weekend where I feel normal (battling something- blech) and decent weather I will check this out.

    Since the ps works, would that rule out the wire in the door jamb to under dash?
     

Share This Page