03 Cadillac CTS PassKey 3 wiring

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=87691
Printed Date: May 17, 2025 at 6:59 PM

Topic: 03 Cadillac CTS PassKey 3 wiring

Posted By: raab3485
Subject: 03 Cadillac CTS PassKey 3 wiring
Date Posted: December 23, 2006 at 3:13 PM

I'm doing a RS for a customer in an 03 Cadillac CTS and I'm using a 457GW. I'm at the stage where I need to hook up the Pink and Pink/Black wires off the 457 to the Pink or White wire (according to the diagram) however upon finding the PassKey III module there is no Pink or White wires. What I have found are 2 purple, 1 black, 1 yellow, 1 orange. Also at the antenna at the key cylinder there is a Green and a Brown wire. The brown splices with the black listed above. I need to know which of these wires I'm tapping into before I go any further as I don't want to screw this car up and have it not start because I hacked the wrong wires up. If anyone has any insight it would be very helpful.

Replies:

Posted By: rudydapimp
Date Posted: December 23, 2006 at 3:31 PM

not sure about the wires, but I would have just used a sinple key in box bypass such as DEI 556uw

Posted By: Twelvoltz
Date Posted: December 23, 2006 at 5:12 PM

It has been my experience with the GM product that the key-in-a-box bypass modules do not always perform reliably.

I have switched to the GMDL-BP for these vehicles.

Posted By: chris354
Date Posted: December 23, 2006 at 6:46 PM

Just did an 04 and its the yellow wire comming out of the pk3 module it will test as acc.

Posted By: wiretapper
Date Posted: December 24, 2006 at 2:55 AM

It's intersting that no one is reporting any problems with the 457G on a CTS.

I've done an '04 and two '05's, and each one triggered the "have security system serviced" on the info display. All three were wired properly, that was triple-checked of course. I talked to DEI techs and they told me the new 1700G will do the job since it has the latest software.

Anyone know about this? I have to do another '04, but I cannot have this happen again..

Posted By: raab3485
Date Posted: December 24, 2006 at 11:32 AM

Yellow it was and worked great. Thanks!

Also, I had no security lights or anything triggered when mine was done, it all worked flawlessly.

Posted By: rabenoja
Date Posted: December 26, 2006 at 8:59 PM

wiretapper wrote:

It's intersting that no one is reporting any problems with the 457G on a CTS.
I've done an '04 and two '05's, and each one triggered the "have security system serviced" on the info display. All three were wired properly, that was triple-checked of course. I talked to DEI techs and they told me the new 1700G will do the job since it has the latest software.
Anyone know about this? I have to do another '04, but I cannot have this happen again..

This will only happen if you don't install the extra harness. The remote start will still work fine but, you'll get the light. Install the extra harnesss and wire the gray/black to acc and you'll be fine.

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