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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1162 (OBJECT DETECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B1E3ACIRCUIT/SYSTEM TESTING
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Circuit/System Testing
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect harness connectors at all rear object sensors.
- Ignition ON, transmission in REVERSE, test for 8.0-9.0 volts between object sensor supply voltage circuit terminal 1 and ground.
- If less than the specified range, test the supply voltage circuit for a short to ground. If all circuits test normal, replace the object alarm module.IMPORTANT: A short to voltage on the component signal circuit may cause this DTC to set.
- If greater than the specified range, test the supply voltage circuit for a short to voltage. If all circuits test normal, replace the object alarm module.
- If less than the specified range, test the supply voltage circuit for a short to ground. If all circuits test normal, replace the object alarm module.
- Connect each rear object sensor one at a time, while monitoring Sensor Feed Voltage Output scan tool parameter. The parameter value should be greater than 8.0 volts.
- If less than the specified value after an individual object sensor is connected, test or replace that object sensor.
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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.