Do you need to relearn the theft deterrent module?
Do you need to relearn the theft deterrent module?
No relearn is required on a Passkey equipped vehicle when replacing the PCM. Passkey II – The Passkey II system has the Theft Deterrent Module (TDM) function stored in the Body Control Module (BCM). The TDM portion of the BCM will validate the resistive chip in the ignition key.
How to relearn GM vehicle theft deterrent ( VTD ) procedures?
Turn the ignition switch to the “ON” position as in Step 1 for 11 minutes for a third time. 6. Turn the ignition switch to the “OFF” position for 30 seconds for a third time. 7. Turn the ignition switch to the “ON” position for 30 seconds. 8. Turn the ignition switch to the “OFF” position. 9. Attempt to start the engine.
When do I need to relearn my security module?
If the resistance value read by the TDM is what the TDM is expecting, the TDM will send a signal to the PCM informing the PCM that a valid key is present and the PCM may start the vehicle. No relearn is required on a VATS equipped vehicle when replacing the PCM.
What are the different types of GM thieves deterrent systems?
GM vehicles have three types of Vehicle Thief Deterrent (VTD) systems, each requiring their own set of relearn procedures. Unless these procedures are correctly performed the vehicle will not start after the PCM has been replaced. The three systems are: Vehicle Anti-Theft System (VATS), Passkey, & Passkey II – resistive chip ignition key
No relearn is required on a Passkey equipped vehicle when replacing the PCM. Passkey II – The Passkey II system has the Theft Deterrent Module (TDM) function stored in the Body Control Module (BCM). The TDM portion of the BCM will validate the resistive chip in the ignition key.
Turn the ignition switch to the “ON” position as in Step 1 for 11 minutes for a third time. 6. Turn the ignition switch to the “OFF” position for 30 seconds for a third time. 7. Turn the ignition switch to the “ON” position for 30 seconds. 8. Turn the ignition switch to the “OFF” position. 9. Attempt to start the engine.
If the resistance value read by the TDM is what the TDM is expecting, the TDM will send a signal to the PCM informing the PCM that a valid key is present and the PCM may start the vehicle. No relearn is required on a VATS equipped vehicle when replacing the PCM.
GM vehicles have three types of Vehicle Thief Deterrent (VTD) systems, each requiring their own set of relearn procedures. Unless these procedures are correctly performed the vehicle will not start after the PCM has been replaced. The three systems are: Vehicle Anti-Theft System (VATS), Passkey, & Passkey II – resistive chip ignition key
