2004 Buick Rendezvous PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS

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Filed Under (Buick) by admin on 17-12-2010

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IMPORTANT: When replacing a theft deterrent control module with an GM Service Parts Operation (SPO) Replacement Part, set up the control module prior to the 10-minute relearn procedure or the 30-minute relearn procedure. TOOLS REQUIRED Scan tool SET UP A NEW THEFT DETERRENT CONTROL MODULE Use this procedure only if replacing the theft deterrent control module with an GM SPO Replacement Part. 1. Connect a scan tool to the vehicle. 2. Turn ON the ignition, with the engine OFF. 3. With a scan tool, select Setup New VTD Module in the Vehicle Theft Deterrent, Special Functions data list. 4. Follow the scan tool on-screen instructions. IMPORTANT: When replacing a theft deterrent control module with an GM SPO Replacement Part, the module will learn the keys immediately. The existing powertrain control module (PCM) must learn the new fuel continue password when you replace the theft deterrent control module. When replacing a PCM with a GM SPO Replacement Part, the new PCM will learn the incoming fuel continue password immediately after programming and upon receipt of a password message. Once a password message is received and a password is learned, perform the learn procedure to change this password again. A PCM which had been installed in another vehicle will have learned the fuel continue password of the other vehicle’s theft deterrent control module. Perform either the 10-minute relearn procedure or the 30-minute relearn procedure after programming to learn the fuel continue password of the current vehicle’s theft deterrent control modules. When performing either relearn procedure, all previously learned keys will be erased from the theft deterrent control module’s memory. Additional keys may be learned immediately after the first relearn

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1994 Cadillac DeVille Alarm Module Description and Operation Universal Theft Deterrent UTD (RPO UA6)

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Filed Under (Cadillac) by admin on 12-08-2010

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The Universal Theft Deterrent (UTD) System is designed to sound the horns and flash the exterior lights when the system is armed and entry is gained forcibly through the doors or trunk. Alarms Operation of the exterior lights and horns when activated, is controlled by the Theft Deterrent Module via the Theft Deterrent Relay. Fuse B3 applies voltage to the Theft Deterrent Relay’s coil at all times. When the alarm is active the Theft Deterrent Module cycles the alarm system control driver (terminal F) on and off once per second. During this cycle ground is applied to the Theft Deterrent Relay coil and then removed. This causes the relay to energize and de-energize. The relay contacts will now cycle open and closed at the same rate as the alarm system control driver. When the Theft Deterrent Relay’s contacts are closed, the Horn, Park Lights, and Headlight Relays are grounded through the Diode Pack, and CKT 624. The relays now energize and the relays respective circuits will turn on. The Diode Pack is installed in the circuit to provide circuit isolation. If the diode pack were to short some unusual symptoms might occur such as the headlights light when the horn is sounded. Arming Arming the Theft Deterrent System is a four step procedure. The arming sequence begins when the ignition is turned OFF. This removes battery voltage at module terminal K, the ignition 1 input. Step 2 occurs when a door is opened and ground is applied to module terminal J, the tamper input. The system is still not armed so grounding the tamper input at this time does not set off the alarms. The SECURITY indicator flashes to alert the operator the system is not armed. Step 3 occurs when the doors are locked electrically, this applies battery voltage to the module’s terminal G, the system arm input. The SECURITY indicator is on steady to indicate that the system is armed. The arming sequence is completed when all doors are closed, removing ground from the module’s terminal J, the tamper input. The system is now armed. The SECURITY indicator will remain on for a few seconds. The Remote Keyless Entry (RKE) System can also arm the Universal Theft Deterrent

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2002 GMC Savana 1/2 Ton Van Programming Theft Deterrent System Components

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Filed Under (GM) by admin on 06-07-2010

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If replacing the Passlock module with a GM Service Parts Operations (SPO) replacement part, the module will learn Passlock(TM) sensor data code immediately. The existing PCM however, must learn the new fuel continue password when the Passlock module is replaced. If replacing a PCM with a GM Service Parts Operations (SPO) replacement part, after programming, these modules will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle’s fuel continue password and will require a learn procedure after programming to learn the current vehicle’s password. Conditions Use this procedure after replacing: The Passlock(TM) Sensor The Passlock(TM) Module The PCM Learn Procedures There are 2 available methods to perform the programming procedure: