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.
Loopback Test Failure
Using scan tool, record and erase DTCs. Turn ignition off. Wait 10 seconds. Turn ignition on. Operate power liftgate several times from full open to full closed position if possible. Recheck for DTCs. If LOOPBACK TEST FAILURE resets, replace Power Liftgate Module (PLGM). See POWER LIFTGATE MODULE under REMOVAL & INSTALLATION. If LOOPBACK TEST FAILURE does not reset, system is operating properly at this time. Check for intermittent poor connections or faulty circuits.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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