Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2004TAHOE 4WD V8-5.3L VIN TREPAIR AND DIAGNOSISRESTRAINTS AND SAFETY SYSTEMSAIR BAG SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2004 Chevrolet Tahoe 4WD V8-5.3L VIN T
Scan Tool Data Definitions
2004 Chevrolet Tahoe 4WD V8-5.3L VIN TSECTION Scan Tool Data Definitions
SCAN TOOL DATA DEFINITIONS
The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.
8-Digit GM Part Number: The scan tool displays an 8-digit part number. This number is the GM part number that is stored within the SDM memory.
Calibration ID: The scan tool displays a 4-digit number. This calibration ID is the check sum of the SDM read only memory contents.
Component Serial Number: The scan tool displays the digits of the SDM serial number.
Driver Seat Belt Status: The scan tool displays buckled or unbuckled. The signal from the driver seat belt switch indicates whether the driver seat belt is buckled or unbuckled.
Driver Side Impact Sensor (SIS) ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the left SIS.
Front End Sensor #1 ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the left front end sensor.
Front End Sensor #2 ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the right front end sensor.
Ignition Voltage: The scan tool displays 0-20 volts. Ignition represents the system voltage measured by the SDM at its ignition 1 voltage feed.
Julian Date of Build: The scan tool displays a 3-digit number. An example would be 723. 723 is July 23 which is day 204 based on the Julian Calendar.
Passenger Side Impact Sensor (SIS) ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the right SIS.
ROM ID: The scan tool displays a 4-digit number. This number is the read-only memory (ROM) ID.
Year Module Built: The scan tool displays what year the module was built.
The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.
8-Digit GM Part Number: The scan tool displays an 8-digit part number. This number is the GM part number that is stored within the SDM memory.
Calibration ID: The scan tool displays a 4-digit number. This calibration ID is the check sum of the SDM read only memory contents.
Component Serial Number: The scan tool displays the digits of the SDM serial number.
Driver Seat Belt Status: The scan tool displays buckled or unbuckled. The signal from the driver seat belt switch indicates whether the driver seat belt is buckled or unbuckled.
Driver Side Impact Sensor (SIS) ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the left SIS.
Front End Sensor #1 ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the left front end sensor.
Front End Sensor #2 ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the right front end sensor.
Ignition Voltage: The scan tool displays 0-20 volts. Ignition represents the system voltage measured by the SDM at its ignition 1 voltage feed.
Julian Date of Build: The scan tool displays a 3-digit number. An example would be 723. 723 is July 23 which is day 204 based on the Julian Calendar.
Passenger Side Impact Sensor (SIS) ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the right SIS.
ROM ID: The scan tool displays a 4-digit number. This number is the read-only memory (ROM) ID.
Year Module Built: The scan tool displays what year the module was built.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.