06 Cobalt PK3+
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=88327
Printed Date: May 01, 2024 at 7:58 PM
Topic: 06 Cobalt PK3+
Posted By: ugbandtulsa
Subject: 06 Cobalt PK3+
Date Posted: January 03, 2007 at 11:29 PM
Hey fellow broken backs..... Can anyone verify the info that zeripdivad posted back in November on this car: I have an 06 cobalt in the shop right now with PK3 plus on it, and can't get the @#$% car to crank. (yes, I've triple checked the accessory wire 12 volt dropout, etc) I Used a 556U to bypass PK3, and I've measured the cut Passlock 2 wire resistance value at 1.77k ohms. However, the info zeripivadad posted for the 2006 G6 says use a 1300 ohm resistor inline, with doc. 1603. Anyone ever tried a 1300 ohm resistor on the 06 cobalt? I can get the car to crank with the key physically inside the cylinder, but remove the key and no dice. Like I said, I have a 556U on there, but have not yet tried a 556L inline on the passlock wire--but a 1750 ohm and a 1800 ohm resistor would not crank the car either. So, will a 1300 do the trick? This car is kicking my @SS, lol. Really wishing it was an 05! Mike
Replies:
Posted By: kgerry
Date Posted: January 04, 2007 at 10:42 AM
PLJX-UTI is what i use on these and they seem to work fine....
-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: chris354
Date Posted: January 04, 2007 at 8:09 PM
Posted By: john ogrady
Date Posted: January 05, 2007 at 7:08 PM
You have a Pass Key III system.That is what PK3 stands for this is the transponder type system.You have RF ID chip in the head of your ignition key.The terminology is simple,if there is something special about the ignition key PK3 stamped on it or a black pellet It is called Pass-Key.VATS was only used for 2 years on the Corvette.If the GM vehicle has a Ani-Theft system and there is nothing special about the ignition key then it Pass-Lock .
Posted By: another-kelly
Date Posted: January 05, 2007 at 8:18 PM
556U and
https://www.directechs.com/techtips/pdfs/resources/security/directed_techtips/1606.pdf
Posted By: chris354
Date Posted: January 05, 2007 at 9:10 PM
Vats was used on alot of older model gms thay are the one that have the resistor pellet on the key. There is a new pk3 system thats the pk3+ and the only thing stamped on the key is the + in a circle.
Posted By: lazima
Date Posted: January 05, 2007 at 10:01 PM
The only diference between pk3 and circle plus is the signal strength thats it
Posted By: Velocity Motors
Date Posted: January 05, 2007 at 10:34 PM
Here's a good writeup of the differences of the Passlock / Passkey systems:
https://www.bsecorp.com/files/techtips/ST9303l.pdf
------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: bigboy49251
Date Posted: January 05, 2007 at 11:56 PM
go get an extra key made you dont need a transponder key then take your original key shove it up under the ignition get it as close as you can get it then mount it so that it wont move and the car will start
Posted By: chris354
Date Posted: January 06, 2007 at 1:00 AM
That kind of beats the purpose for the factory anti theft system. He already has a 556u which will work he was just having a problem with the 2nd ign.\ keysense wiring.
Posted By: Velocity Motors
Date Posted: January 06, 2007 at 10:10 AM
bigboy49251 wrote:
go get an extra key made you dont need a transponder key then take your original key shove it up under the ignition get it as close as you can get it then mount it so that it wont move and the car will start
Thats is not a good idea. Why bother doing that when there are modules out on the market that allow you to bypass the PK3+ systems without loosing a key ? Just go get a module from iDatalink, Fortin or Trilogix and you will be fine. It's a 10-15 minute installation and this way you retain the OEM security as well as any possible problems you may have with the system seeing two keys. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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