SMU - Revised Theft DeterrentDiagnostic Information
| Subject: | Revised Theft Deterrent Diagnostic Information |
| Models: | 2001 Chevrolet and GMC C/K, G-Van, M/L-Van, S/T Models |
| 2001 Oldsmobile Bravada |
This bulletin is being issued to revise Scan Tool Data List and Scan Tool Data Definitions information in the Theft Deterrent sub-section of the following Service Manuals. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI2000. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
2001 C/K 3500HD Service Manual / Book Cover ID GMT/01-CK-2 / Volume 2 of 2
Scan Tool Data List
On page 8-433, Passlockā¢ Data Voltage Typical Data Value should be updated to read 0.86 - 5.00 volts.
Scan Tool Data Definitions
On page 8-434, Passlockā¢ Data Voltage definition should be updated to read: "The scan tool displays the voltage code from the Passlockā¢ sensor to the Theft Deterrent Control Module. A valid Passlockā¢ sensor voltage of 5.0 volts will be displayed on the scan tool when the ignition cylinder is turned to the On position. Once the ignition cylinder has been rotated to the crank position, the Passlockā¢ voltage will drop from 5.0 volts to a value between 0.86-4.28 volts, depending on which of the 10 possible Passlockā¢ sensors the vehicle is equipped with. The Theft Deterrent Module then determines if the voltage received is a valid or invalid code. If the Theft Deterrent Module determines the code to be valid, the Theft Deterrent Module sends a signal to the BCM to allow injector activation allowing the engine to run. The scan tool will continue to display the Passlockā¢ voltage code of (0.86-4.28 volts) received by the Theft Deterrent Module until the ignition cylinder returns to the Off position.
2001 C/K Service Manual / Book Cover ID GMT/01-CK8-5 / Volume 5 of 5
Scan Tool Data List
On page 8-897, Passlockā¢ Data Voltage Typical Data Value should be updated to read 0.86 - 5.00 volts.
Scan Tool Data Definitions
On page 8-898, Passlockā¢ Data Voltage definition should be updated to read: "The scan tool displays the voltage code from the Passlockā¢ sensor to the Body Control Module. A valid Passlockā¢ sensor voltage of 5.0 volts will be displayed on the scan tool when the ignition cylinder is turned to the On position. Once the ignition cylinder has been rotated to the crank position, the Passlockā¢ voltage will drop from 5.0 volts to a value between 0.86-4.28 volts, depending on which of the 10 possible Passlockā¢ sensors the vehicle is equipped with. The Body Control Module then determines if the voltage received is a valid or invalid code. If the Body Control Module determines the code to be valid, the BCM will allow injector activation allowing the engine to run. The scan tool will continue to display the Passlockā¢ voltage code of (0.86-4.28 volts) received by the Body Control Module until the ignition cylinder returns to the Off position.
2001 G-Van Service Manual / Book Cover ID GMT/01-G6-3 / Volume 3 of 3
Scan Tool Data List
On page 8-702, Passlockā¢ Data Voltage Typical Data Value should be updated to read 0.86 - 5.00 volts.
Scan Tool Data Definitions
On page 8-703, Passlockā¢ Data Voltage definition should be updated to read: "The scan tool displays the voltage code from the Passlockā¢ sensor to the Passlockā¢ Module. A valid Passlockā¢ sensor voltage of 5.0 volts will be displayed on the scan tool when the ignition cylinder is turned to the On position. Once the ignition cylinder has been rotated to the crank position, the Passlockā¢ voltage will drop from 5.0 volts to a value between 0.86-4.28 volts, depending on which of the 10 possible Passlockā¢ sensors the vehicle is equipped with. The Passlockā¢ Module then determines if the voltage received is a valid or invalid code. If the Passlockā¢ Module determines the code to be valid, the Passlockā¢ Module sends a signal to the BCM to allow injector activation allowing the engine to run. The scan tool will continue to display the Passlockā¢ voltage code of (0.86-4.28 volts) received by the Passlockā¢ Module until the ignition cylinder returns to the Off position.
2001 ML-Van Service Manual / Book Cover ID GMT/01-ML-2 / Volume 2 of 2
Scan Tool Data List
On page 8-506, Passlockā¢ Data Voltage Typical Data Value should be updated to read 0.86 - 5.00 volts.
Scan Tool Data Definitions
On page 8-507, Passlockā¢ Data Voltage definition should be updated to read: "The scan tool displays the voltage code from the Passlockā¢ sensor to the Body Control Module. A valid Passlockā¢ sensor voltage of 5.0 volts will be displayed on the scan tool when the ignition cylinder is turned to the On position. Once the ignition cylinder has been rotated to the crank position, the Passlockā¢ voltage will drop from 5.0 volts to a value between 0.86-4.28 volts, depending on which of the 10 possible Passlockā¢ sensors the vehicle is equipped with. The Body Control Module then determines if the voltage received is a valid or invalid code. If the Body Control Module determines the code to be valid, the BCM will allow injector activation allowing the engine to run. The scan tool will continue to display the Passlockā¢ voltage code of (0.86-4.28 volts) received by the Body Control Module until the ignition cylinder returns to the Off position.
2001 S/T Service Manual / Book Cover ID GMT/01-ST-3 / Volume 3 of 3
Scan Tool Data List
On page 8-857, Passlockā¢ Data Voltage Typical Data Value should be updated to read 0.86 - 5.00 volts.
Scan Tool Data Definitions
On page 8-857, Passlockā¢ Data Voltage definition should be updated to read: "The scan tool displays the voltage code from the Passlockā¢ sensor to the Body Control Module. A valid Passlockā¢ sensor voltage of 5.0 volts will be displayed on the scan tool when the ignition cylinder is turned to the On position. Once the ignition cylinder has been rotated to the crank position, the Passlockā¢ voltage will drop from 5.0 volts to a value between 0.86-4.28 volts, depending on which of the 10 possible Passlockā¢ sensors the vehicle is equipped with. The Body Control Module then determines if the voltage received is a valid or invalid code. If the Body Control Module determines the code to be valid, the BCM will allow injector activation allowing the engine to run. The scan tool will continue to display the Passlockā¢ voltage code of (0.86-4.28 volts) received by the Body Control Module until the ignition cylinder returns to the Off position.
