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 C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2052 (POWER DOOR LOCK SYSTEM AND RELEASE SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESLIFTGATE OBJECT SENSOR MALFUNCTION - DTC B153FCIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Suburban C1500, 5.3 Z
Circuit/System Verification
2006 Chevrolet Suburban C1500, 5.3 ZSECTION Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify the scan tool Object Detection Sensor Status parameter is between 3V-3.5V.
- If not between 3V-3.5V
Refer to Circuit/System Testing.
- If between 3V-3.5V
- If not between 3V-3.5V
- Verify the scan tool Object Detection Sensor Status parameter is between 3V-3.5V and changes to 2.25-2.75V as the B71R liftgate object sensor-right is pressed.
- If not between 2.25-2.75V or does not change
Test or replace the B71R liftgate object sensor-right.
- If between 2.25-2.75V and changes
- If not between 2.25-2.75V or does not change
- Verify the scan tool Object Detection Sensor Status parameter is between 3V-3.5V and changes to 2.25-2.75V as the B71L liftgate object sensor-left is pressed.
- If not between 2.25-2.75V or does not change
Test or replace the B71L liftgate object sensor-left.
- If between 2.25-2.75V and changes
- If not between 2.25-2.75V or does not change
- All OK.
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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.