06 cadillac cts service theft system

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silent bob

Member - Posts: 16

Joined: January 11, 2007

Location: United States

Posted: December 17, 2008 at 11:02 AM / IP Logged

I installed an audiovox 9276 remote start/keyless entry& FLDL1 bypass on this car recently. Starts and operates fine, but I get the dreaded "Service theft System" on the messsage center and after a while the radio cuts out. Does not happen when started with the key. Not missing any ignition wires, keysense is hooked up. Tried interrupting ignition wire to PK module. No luck. From what I've found it seems to be a common problem with some GM vehicles. Any Ideas to make it go away?

thanks

the part came out once

therefore it must go back in

where is that hammer

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sparkie

Platinum - Posts: 2,061

Joined: November 06, 2003

Location: Canada

Posted: December 17, 2008 at 5:24 PM / IP Logged

It will likely be your bypass module. I have seen the same issue with some other Cadillacs. The module may produce the correct transponder response into the car, but the vehicle also wants to see the key present. You can try sending a ground to the light green key sense wire while under remote start. This may cure the problem. Otherwise, you will probably have to switch to another type of bypass.

sparky

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silent bob

Member - Posts: 16

Joined: January 11, 2007

Location: United States

Posted: December 18, 2008 at 8:43 AM / IP Logged

When in doubt, call tech support...

Found out they had a new version of the firmware for the bypass specific to the CTS. Just hidden on the website where you couldn't find it.

Flashed the module& it works like a charm. 06 cadillac cts service theft system -- posted image.

the part came out once

therefore it must go back in

where is that hammer

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88gta350

Member - Posts: 8

Joined: October 23, 2007

Location: Illinois, United States

Posted: December 21, 2008 at 2:49 AM / IP Logged

What was the version you flashed to make it work right?

I see the fLDL says it activates the heated seats and defrost on the vehicle specific page but on the FLDL install pdf, it says it doesnt have that option on the Cts. Do you know which one is right?

Scott Michaels

Joliet,Il

Jack of all Trades

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06 cadillac cts service theft system

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