2003 Bonneville SE - changing the battery SAFE or NOT ? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-14-2005, 12:46 PM   #11
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Your friend is a doomsayer. Everything he said was either complete BS or greatly exaggerated.

Most dealers will give you the unlock code for the stereo for free. Show them your title or registration to prove the car is yours, and they'll run your VIN for the code. FREE. Not $200.

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Old 08-14-2005, 12:51 PM   #12
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From AllDataDIY.com:
Quote:
Theft Deterrent

The "Theftlock" theft deterrent system is a feature on all base and uplevel radios. There is no need to program a security code into the radio as in past model years. The theft deterrent system now utilizes class 2 serial data to determine if the radio is in the appropriate vehicle. Each time the radio receives the "run" power mode message, it compares the VIN information it has stored to the VIN information received from a module on the class 2 serial data circuit responsible for transmitting that information. If a mis-match occurs, the radio display will indicate to the user the radio is locked. Once this takes place, a DTC will set, the radio will not respond to any button presses and become inoperative. The two scenarios able to cause this condition are:

1. A radio is installed from another vehicle.
2. A module which communicates on the class 2 serial data circuit which supplies VIN information to the radio is replaced and not properly setup with the correct VIN information for that vehicle.

The only way to unlock the radio is by using a scan tool. Always refer to the table in this section to diagnose the "Theftlock" DTC for further information.
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Old 08-14-2005, 03:13 PM   #13
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The Theftlock system on the 2000+ Bonnevilles does not require a code to be keyed in to unlock as stated previously. It'* all based on the VIN. So you can disconnect then reconnect the batt without any adverse effect on the radio.
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Old 08-14-2005, 03:20 PM   #14
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Great information guys. That started in 2000?
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Old 08-14-2005, 06:37 PM   #15
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Quote:
Originally Posted by willwren
Great information guys. That started in 2000?
Yes
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Old 08-15-2005, 01:35 PM   #16
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I tell ya that AllDataDYI.com is a life saver!!! love that site!! tells you everything you need to know!!!
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Old 08-16-2005, 11:39 PM   #17
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What is the name for the cable that you plug into the lighter?

I used to have one of these batteries that you keep for just in case, but as i learned it the hard way, they dont always work :(

And that site you said, does not work for me for some reason :(
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Old 08-17-2005, 12:11 AM   #18
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The second tool down on this page........http://www.matcotools.com/Catalog/to...select=&page=4

Called a COMPUTER MEMORY RETAINING TOOL

But look around at local auto parts stores, they probably sell them cheaper. Maybe even wal-mart?
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Old 08-19-2005, 12:34 AM   #19
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wow this is some good stuff
thank you very very much
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Old 08-19-2005, 01:30 AM   #20
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No problem!
This is the cheapest I found the 9 volt unit online...http://www.tooldesk.com/products/pro...il.aspx+id+780 $7.48


And this is the cheapest I found for a household powered unit...http://www.handsontools.com/store-pr...t%3E_5333.html $19.83
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