’03 Caddy CTS Passkey III Plus

Anyone know anything about this? It is VVERY DIFFERENT from PASSLOCK III Plus and most others as it seems to CHANGE resistance/codes. Made by DELPHI and complete unit will unplug. Any permenant bypass known???Hotttunes - Bassman

Installer since 1976

Too many years experience

Cookeville, TN.

Professionally Installed With Pride

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Not aware of anything different than:

GM Passkey 3 Transponder Immobilizer Overrride & GM Passlock 2 Immobilizer Override via data bus

MO

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From what I'm showing the Cadillac CTS uses PassKey III which can be bypassed with a PKG 4, PKG 5, or a GMBP bypass. The passkey wires should be violet (2), orange, black, and pink. Are these what your showing or something different? Mike

Yes they are but DEI didn't show it needed anything but a 555U or I would have had a 456G and a 555G on standby. I usually do my own WRAP the Key and use a relay but the Transponder in this unit is Quite different. It CHANGES Code and resistance ever so often. What I am looking for is a way to bypass the DELPHI transponder unit (like where it plugs in) for an emergency (Damn I don't have a correct bypass module in stock and already have the car here) bypass. I hate it when sales doesn't check the charts for the needed bypass (in this case the WRONG bypass was listed anyhow) and we have to take the blame (SALES: "Oh the installer didn't have the right module for your vehicle in stock."). I don't like to permenantly bypass the KEY SECURITY but it has been done a lot. I worked for C & A Controls for 8 years (They built LAZY START and others for several brands) and gained a lot of experience in Southern Engineering "Field Fixes". This one is a little more difficult with all of the DATA interfaces.

Making your own will work fine. I mean a the universal type bypasses are no different than what you do when you use the key. I mean you are using a key and then you just transmit the signal from under the dash to the cylinder. J Rilla

Owner/Installer