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 908 (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 does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
- The rear object sensors
- The object alarm module
- The object sensors wiring harness connector
- The object alarm module wiring harness connector
- Ignition ON and the scan tool installed, verify that DTC B1325 is not current.
- If current, refer to DTC B1325 .
- Ignition ON and the scan tool installed, verify that DTC B0958, B0959, B0960 or B0961 is not current.
- If current, refer to DTC B0958, B0959, B0960, or B0961 .
- Ignition ON and with the transmission range in REVERSE, verify that the scan tool Sensor Feed Voltage Output parameter is between 7.2 V - 9.2 V.
- If less than 7.2 V, test the supply voltage circuit of the object alarm sensor for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object alarm module.
- If greater than 9.2 V, test the supply voltage circuit of the object alarm sensor for a short to voltage. If the circuits test normal, replace the object alarm module.
- If all circuits test normal, test or replace the suspect object alarm sensor for the rear or front object alarm system.
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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.