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 MANUALSCHEVROLET2005TRAILBLAZER 4WD V8-5.3L VIN MREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSFER CASETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESNVG 126-NP4 TRANSFER CASESCAN TOOL DATA DEFINITIONS
2005 Chevrolet TrailBlazer 4WD V8-5.3L VIN M
Scan Tool Data Definitions
2005 Chevrolet TrailBlazer 4WD V8-5.3L VIN MSECTION Scan Tool Data Definitions
Scan Tool Data Definitions
ATC Application
This parameter displays the model number assigned to the transfer case. The scan tool displays a numeric value.
ATC Slip Speed
This parameter displays the RPM difference between the front and rear propshafts. The scan tool displays a range of 0-8,192 RPM.
Battery Voltage
This parameter displays the voltage measured by the transfer case shift control module at the transfer case shift control module battery feed. The scan tool displays a range of 0-25.5 volts.
Clutch Pedal Engaged
This parameter displays On when the clutch pedal is depressed. The scan tool displays On or Off.
Current Slip Adapts
This parameter displays corrective adjustments made by the transfer case shift control module for wheel slip events. The scan tool displays a numeric value.
Encoder Gear Position
This parameter displays the mode the transfer case is currently in.
Encoder Return Voltage
This parameter displays the voltage measured by the transfer case shift control module at the encoder signal return. The scan tool displays a range of 0-7.5 volts.
Encoder Supply Voltage
This parameter indicates the voltage measured by the transfer case shift control module at the encoder power supply. The scan tool displays a range of 0-7.5 volts.
Front Propshaft Speed
This parameter displays the rotational speed of the front propshaft. The scan tool displays a range of 0-8,192 RPM.
Ing. Cycles Since Last Current DTC
This parameter displays how many ignition cycles have occurred since last current DTC was set. The scan tool displays a numeric value.
Rear Propshaft Speed
This parameter displays the rotational speed of the rear propshaft. The scan tool displays a range of 0-8,192 RPM.
Service 4WD Lamp
This parameter displays On if the transfer case shift control module commands the Service 4WD lamp, or message, On. The scan tool displays On or Off.
Slip Adapt PWM
This parameter displays the duty cycle applied to the transfer case encoder motor. The scan tool displays a range of 0-100 percent.
Total Slippage
This parameter displays the total slippage of both the front and rear propshafts. The scan tool displays a range of 0-8,192 RPM.
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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.