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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1401 (OBJECT DETECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B1E3ACIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Circuit/System Testing
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at each of the object sensors.
- Ignition ON, transmission in REVERSE, test for 7.5-9.0 volts between 8-volt reference circuit terminal 1 and ground.
- If less than the specified range, test the 8-volt reference circuit for a short to ground. If the circuit tests normal, replace the object alarm module.
- If greater than the specified range, test the 8-volt reference circuit for a short to voltage. If circuit tests normal, replace the object alarm module.
- Connect each rear object sensor one at a time while monitoring the scan tool Sensor Voltage Feed Output parameter. The parameter should be 7.2-9.2 volts.
- If not within the specified range, test or replace the appropriate object alarm 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.