Questions & Answers

2001 gmc sierra door locks

+1 vote
is there a bypass that does the door locks if not is there a diagram for door locks to hook to a relay
asked Apr 4, 2016 in GMC by steve m (1,340 points)

2 Answers

+1 vote
As for Robert's commentsw on 2 relays to invert the polarity, you can pick up a "door lock inverter" for peanuts at most install shops or distributors. Much cleaner and simpler than relays, and is usually cheaper too.
answered Apr 4, 2016 by JEREMY JOHNSON (1,820 points)
do you guess have a daigram for relays the way it should be hooked up
You need to do that for each lock and unlock
0 votes

Door locks can only be controlled via analog connections on this vehicle.

They POSITIVE trigger so be weary of this since most starters output Negative. 2 relays to reverse the polarity of the remote start in question will be needed.

 

(+) Lock

  • Light Blue or Blue
  • BCM Brown connector Pin A4

 

(+) Unlock

  • White
  • BCM Brown connector Pin A5

 

It's the wires tagged 92 and 97 in the below pic.

 

 

answered Apr 4, 2016 by Robert T (297,620 points)

Something to note. If the vehicle has a factory alarm, you would need to wire up the Disarm signal. This is a negative trigger and can be tested from the driver door key cylinder.

(-) Disarm

  • Light Green
  • BCM Purple connector Pin B3

 

it's the wire tagged 101 in the below pic

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