Power door locks not working with door switch

Tiny
KIRKALEXANDER
  • MEMBER
  • 1996 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
Door locks work with remote fob but not with door switch. Installed new door switches both sides, still nothing. Have power yellow wire drivers door.
Thursday, March 19th, 2020 AT 2:47 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,772 POSTS
Hi,

I attached a portion of the wiring schematic. If you have power to the orange wire in the pic and the switch is new, check to make sure the ground I highlighted is good.

Let me know.

Joe
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Thursday, March 19th, 2020 AT 2:57 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
We need find out where you have power on this wire. You said on the driver door but at the switch? Do you have it at the actuator? Check for a short to ground and make sure your ground is good on the switch.

Let me know if you have questions but basically we need to see what is coming out of the switch. Thanks
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Thursday, March 19th, 2020 AT 3:05 PM
Tiny
KIRKALEXANDER
  • MEMBER
  • 3 POSTS
I have power to yellow and beige/tan wire under dash. Power to yellow at switch, no power to actuator.
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Thursday, March 19th, 2020 AT 3:40 PM
Tiny
KIRKALEXANDER
  • MEMBER
  • 3 POSTS
In attached photo. I have power to the yellow wire on right when ignition on and constant power to the wire to the left of it. At switch I have power when ignition on to yellow wire. Also power to light blue wire on passenger door when ignition on.
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Thursday, March 19th, 2020 AT 4:33 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,772 POSTS
Hi,

Looking at a schematic, when you say yellow wire, are you referring to the orange one in the schematic? That should have power at all times. The blue wire runs between the two switches so both locks get power. Since you seem to have power, the problem seems to be one of two things. Either that actuators on the doors are bad, or there is no ground.

Have you confirmed there is ground via the black wire from the main switch? See the pic below.

Also, the pic you mentioned didn't come through. Can you reload it?

Thanks,
Joe
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Thursday, March 19th, 2020 AT 6:21 PM

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