2003 impala door locks

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=102963
Printed Date: May 28, 2024 at 8:17 PM

Topic: 2003 impala door locks

Posted By: impala_man2003
Subject: 2003 impala door locks
Date Posted: March 11, 2008 at 11:00 AM

i am tryng to get the doorlocks to one a 2003 chevy impala locks.can someone tell e how to wire up the relays to get the door locks to work

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L67 Master (GM 3.8 SC)

Replies:

Posted By: KarTuneMan
Date Posted: March 11, 2008 at 11:57 AM

pretend this doesn't say dodge caravan. follow the tech sheet for resistance values.

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Posted By: impala_man2003
Date Posted: March 11, 2008 at 2:00 PM

sO DO I NEED TO USE RELAYS AND IF SO HOW DO I WIRE THEM UP

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L67 Master (GM 3.8 SC)

Posted By: brhaugen
Date Posted: March 11, 2008 at 4:36 PM

depends on if your rs has ground outs - and if they send a good solid ground or not - try like KarTuneMan says 1st before going to the trouble of setting up relays

Posted By: mikvot
Date Posted: March 11, 2008 at 4:40 PM

As long as the door lock outputs of the alarm are (-) you don't need to use relays. Just wire in the diodes and resistors like kartunemans diagram says. If you wanted to use relays you can....nothing wrong with being safe.

86 on both relays 12v

85 (-) lock or unlock from alarm

87 ground on both relays

30 1 relay gets proper resistance for lock, and pin 30 on the other relay gets resistance for unlock.

87a is not used

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Posted By: Mike M2
Date Posted: March 11, 2008 at 5:56 PM

There is no resistance for lock, just unlock. What kind of alarm is it?

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Mike M2
Tech Manager
CS Dealer Services

Posted By: sparkie
Date Posted: March 12, 2008 at 5:29 PM

The lock/unlock wire is ORANGE / Black and can be found in the gray 24 pin connector of the BCM in cavity B3. You need a ground pulse through a 480 ohm resistor to lock the doors and a ground pulse to unlock the doors. Don't use diodes inline as they add resistance to the circuit. If your unit has negative door lock/unlock outputs, connect the units unlock wire directly to the ORANGE / black wire. Connect the units lock wire to terminal #85 of a relay. Terminal # 86 to a fused battery source (12 volts +), Terminal # 30 to a good ground, Terminal # 87 to one end of 480 ohm resistor and the other end of the resistor to the ORANGE / black wire. If your car has a factory alarm, then a bit more wiring will be needed to arm/disarm it.

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sparky