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 MANUALSCHEVROLET2001EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISINSTRUMENT PANEL, GAUGES AND WARNING INDICATORSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2001 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Scan Tool Data Definitions
2001 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Scan Tool Data Definitions
8-DIGIT GM PART NUMBER: The scan tool displays the GM part number of the BCM.
ABS WARNING LAMP: The scan tool displays On/Off. The state of the ABS indicator as commanded by the IPC.
BRAKE WARNING LAMP: The scan tool displays On/Off. The state of the BRAKE indicator as commanded by the IPC.
DRIVER SEAT BELT: The scan tool displays Buckled/Unbuckled. The state of the fasten safety belt indicator as commanded by the IPC. The BCM monitors the signal circuit from the seat belt switch. The IPC receives a class 2 message from the BCM.
ECT: The scan tool displays -40 to +151°C (-40 to +304°F). The PCM monitors the voltage at the signal circuit of the engine coolant temperature sensor. The voltage is inversely proportional to the engine coolant temperature.
ENGINE SPEED: The scan tool displays 0-9999 RPM. Engine speed is computed by the PCM from the 3X reference input. It should remain close to desired idle under various engine loads with the engine idling.
FUEL LEVEL REMAINING: The scan tool displays 0-100%. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor. The IPC receives a class 2 message from the PCM indicating the fuel level percent.
FUEL LEVEL REMAINING: The scan tool displays 0-189 L (0-55 gallons). The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.
FUEL LEVEL SENSOR: The scan tool displays 0-5 volts. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.
IGNITION: The scan tool displays 0-25 volts. The BCM displays voltage it senses at the ignition 1 input.
SECURITY LAMP: The scan tool displays On/Off. The state of the Security Lamp indicator as commanded by the BCM.
VEHICLE SPEED: The scan tool displays 0-255 km/h (0-155 mph). The PCM monitors the voltage at the signal circuit of the vehicle speed sensor. The voltage is proportional to the vehicle speed.
ABS WARNING LAMP: The scan tool displays On/Off. The state of the ABS indicator as commanded by the IPC.
BRAKE WARNING LAMP: The scan tool displays On/Off. The state of the BRAKE indicator as commanded by the IPC.
DRIVER SEAT BELT: The scan tool displays Buckled/Unbuckled. The state of the fasten safety belt indicator as commanded by the IPC. The BCM monitors the signal circuit from the seat belt switch. The IPC receives a class 2 message from the BCM.
ECT: The scan tool displays -40 to +151°C (-40 to +304°F). The PCM monitors the voltage at the signal circuit of the engine coolant temperature sensor. The voltage is inversely proportional to the engine coolant temperature.
ENGINE SPEED: The scan tool displays 0-9999 RPM. Engine speed is computed by the PCM from the 3X reference input. It should remain close to desired idle under various engine loads with the engine idling.
FUEL LEVEL REMAINING: The scan tool displays 0-100%. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor. The IPC receives a class 2 message from the PCM indicating the fuel level percent.
FUEL LEVEL REMAINING: The scan tool displays 0-189 L (0-55 gallons). The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.
FUEL LEVEL SENSOR: The scan tool displays 0-5 volts. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.
IGNITION: The scan tool displays 0-25 volts. The BCM displays voltage it senses at the ignition 1 input.
SECURITY LAMP: The scan tool displays On/Off. The state of the Security Lamp indicator as commanded by the BCM.
VEHICLE SPEED: The scan tool displays 0-255 km/h (0-155 mph). The PCM monitors the voltage at the signal circuit of the vehicle speed sensor. The voltage is proportional to the vehicle speed.
RENDER: 1.0x
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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.