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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1913 (POWER DOOR LOCK SYSTEM AND RELEASE SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER LIFTGATE MALFUNCTION (LIFTGATE OBJECT SENSOR MALFUNCTION)CIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Suburban K2500, 6.0 U
Circuit/System Verification
2006 Chevrolet Suburban K2500, 6.0 USECTION Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool Object Detection Sensor Status parameter. The reading should be between 3-3.5 V.
- If not within the specified range, perform the Circuit/System Testing.
- Observe the scan tool Object Sensor Supply Voltage parameter while pressing and releasing the liftgate object sensor - right. The reading should change from Inactive to Active as the sensor is pressed and released.
- If the value does not change, test or replace the B71R liftgate object sensor - right.
- Observe the scan tool Object Sensor Supply Voltage parameter while pressing and releasing the liftgate object sensor - left. The reading should change from Inactive to Active as the sensor is pressed and released.
- If the value does not change, test or replace the B71L liftgate object sensor - left.
- Command the liftgate to power close by pressing the liftgate close switch and as the liftgate is closing, press the liftgate object sensor - right or the liftgate object sensor - left. The liftgate should stop and power open.
- If the liftgate continues to power close, replace the K39 liftgate module.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.