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 1161 (OBJECT DETECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B0968CIRCUIT/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 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 the harness connector at the RPA display.
- Ignition ON, verify that a test lamp illuminates between the 12V voltage supply circuit terminal 1 and ground.
- If the test lamp does not illuminate, test the voltage supply circuit terminal for a short to ground or an open/high resistance.
- Connect a test lamp between the control circuit and the 12V voltage supply circuit terminal 1 of the appropriate LED listed below:
- Left amber LED control circuit terminal 2
- Center amber LED control circuit terminal 3
- Red LED control circuit terminal 4
- Command the appropriate LED ON and OFF with a scan tool, verify that a test lamp turns ON and OFF when switching between commanded states.
- If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the object alarm module.
- If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, test or replace the object alarm module.
- If all circuits test normal, test or replace the RPA display.
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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.