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 MANUALSCHEVROLET2007SILVERADO CLASSIC 1500 4WD V8-4.8LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSFER CASETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONSNVG 263-NP1 - TRANSFER CASE
2007 Chevrolet Silverado Classic 1500 4WD V8-4.8L
NVG 263-NP1 - Transfer Case
2007 Chevrolet Silverado Classic 1500 4WD V8-4.8LSECTION NVG 263-NP1 - Transfer Case
Scan Tool Data Definitions
2WD High Indicator Light
This parameter displays On when the transfer case shift control module commands the 2WD high indicator light On. The scan tool displays On or Off.
4WD High Indicator Light
This parameter displays On when the transfer case shift control module commands the 4WD high indicator light On. The scan tool displays On or Off.
4WD Low Active
This parameter displays Yes when the transfer case is currently in the 4WD low lock mode. The scan tool displays Yes or No.
4WD Low Indicator Light
This parameter displays On when the transfer case shift control module commands the 4WD low indicator light On. The scan tool displays On or Off.
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.
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 displays the voltage measured by the transfer case shift control module at the 8 V reference circuit. The scan tool displays a range of 0 - 7.5 volts.
Front Axle Requested
This parameter displays Yes if the transfer case shift control module requests the front axle switch On. The scan tool displays Yes or No.
Front Axle Switch
This parameter displays the feedback states of the front propshaft. The scan tool displays Locked or Unlocked.
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.
Mode Switch Return Voltage
This parameter displays the return voltage from the transfer case shift control switch. The scan tool displays a range of 0 - 5 volts.
Mode Switch Selected
This parameter displays the transfer case shift control switch button currently depressed by the driver.
Motor A Current
This parameter displays current flow when the motor moves one of two directions. The scan tool displays Amps.
Motor B Current
This parameter displays current flow when the motor moves one of two directions. The scan tool displays Amps.
Neutral Indicator Light
This parameter displays On when the transfer case shift control module commands the neutral indicator light On. The scan tool displays On or Off.
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.
RENDER: 1.0x
NO RELATED
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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.