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 MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1239 (OBJECT DETECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B1E3ACIRCUIT/SYSTEM TESTING
2006 Chevrolet Suburban K2500, 6.0 U
Circuit/System Testing
2006 Chevrolet Suburban K2500, 6.0 USECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that DTC B1325 is not set.
- If DTC is set, refer to DTC B1325 .
- Verify that DTC B0958, B0959, B0960 or B0961 is not set.
- If DTC is set, 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 the specified range, test the supply voltage circuit terminal 4 for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object alarm module.
- If greater than the specified range, test the supply voltage circuit terminal 4 for a short to voltage. If the circuits test normal, replace the object alarm module.
- If all circuits test normal, replace the suspect 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.