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 MANUALSCHEVROLET2002EXPRESS 1/2 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2002 Chevrolet Express 1/2 Ton Van V8-5.7L VIN R
Scan Tool Data Definitions
2002 Chevrolet Express 1/2 Ton Van V8-5.7L VIN RSECTION Scan Tool Data Definitions
Scan Tool Data Definitions
The ABS scan tool data definitions contain a brief description of all ABS related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.
4WD Status: The scan tool always displays Two Wheel Drive.
ABS Warning Lamp: The scan tool displays On/Off. The scan tool displays On when the ABS indicator is being commanded on.
Brake Switch Status: The scan tool displays On/Off. The scan tool displays On when the brake is applied.
Brake Warning Lamp: The scan tool displays On/Off. The scan tool displays On when the brake warning indicator is being commanded on or when a brake pressure differential exists.
Left Front Wheel Speed: The scan tool displays 5 - 257 km/h (3 - 160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).
Rear Wheel Speed: The scan tool displays 5 - 257 km/h (3 - 160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).
Right Front Wheel Speed: The scan tool displays 5 - 257 km/h (3 - 160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).
The ABS scan tool data definitions contain a brief description of all ABS related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.
4WD Status: The scan tool always displays Two Wheel Drive.
ABS Warning Lamp: The scan tool displays On/Off. The scan tool displays On when the ABS indicator is being commanded on.
Brake Switch Status: The scan tool displays On/Off. The scan tool displays On when the brake is applied.
Brake Warning Lamp: The scan tool displays On/Off. The scan tool displays On when the brake warning indicator is being commanded on or when a brake pressure differential exists.
Left Front Wheel Speed: The scan tool displays 5 - 257 km/h (3 - 160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).
Rear Wheel Speed: The scan tool displays 5 - 257 km/h (3 - 160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).
Right Front Wheel Speed: The scan tool displays 5 - 257 km/h (3 - 160 mph). The scan tool displays 5 km/h (3 mph) when the vehicle is not moving or moving at speeds less than or equal to 5 km/h (3 mph).
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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.