Section 257 (Theft Deterrent System)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Theft Deterrent
- Diagnostic System Check - Theft Deterrent
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC B2947: Short To Ground On The Passlock™ Sensor Power Circuit
- DTC B2948: Sensed Battery Voltage
- DTC B2957: BCM Signal Input Voltage Low
- DTC B2958: BCM Signal Input Voltage High
- DTC B2960: Valid But Different Code Value Than Previously Learned Form The Passlock™ Sensor
- DTC B3031: BCM Is In Learn Mode But Does Not See A Valid Passlock™ Sensor Code
- DTC B3033: BCM Is Reading A Tamper Code From The Passlock™ Sensor
- DTC P1626: PCM Has Not Established Communications With BCM
- DTC P1631: PCM Did Not Receive A Valid Password
- Symptoms - Theft Deterrent
- Security Indicator Always On or Flashing
- Security Indicator Inoperative
- Repair Instructions
- Description and Operation
- Special Tools and Equipment