CTS Sedan AWD V6-3.0L (2010)
Trunk / Liftgate Hydraulic Fluid: Service and Repair
Liftgate Hydraulic System Refilling
Liftgate Hydraulic System Refilling
Warning: Refer to Eye Protection Warning (See: Service Precautions/Technician Safety Information/Eye Protection Warning).
Warning: Refer to Battery Disconnect Warning (See: Starting and Charging/Battery/Service Precautions).
Note:
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The actuator/hose assemblies are shipped full with fluid. In this case the pump fluid reservoir should only be filled to the normal + sign. Do not
overfill to compensate for an empty actuator/hose assembly.
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Symptom of a low fluid condition will be a jerking liftgate and with an abnormal hydraulic pump noise as the liftgate is being open. The liftgate
will not open to the full open position. The liftgate will reverse before reaching the full open position if not operating properly.
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Inspection of the hydraulic fluid level and/or refilling may only be completed if the liftgate hydraulic actuator pump is removed from the vehicle
and placed on a clean/level workbench horizontally to the + sign to accurately inspect and add fluid as needed. The liftgate hydraulic actuator
pump must rest in the horizontal position for one minute before the hydraulic fluid level is inspected. The level must be above the + mark.
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The liftgate hydraulic system components must be tested for proper operation before reinstalling the trim panels that cover the liftgate hydraulic
actuator pump and actuator/hose assemblies so the fluid level can be recheck after cycling the liftgate 3-5 times to ensure proper fluid level.
Rechecking the fluid level will require removal of the liftgate hydraulic pump.
1. Remove the liftgate hydraulic pump. Refer to Liftgate Hydraulic Pump Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk /
Liftgate/Trunk / Liftgate Hydraulic Pump/Service and Repair/Liftgate Hydraulic Pump Replacement).
2. Position the pump with the fluid reservoir in a vertical position with the filler screw (1) in the up and/or on top position.
3. Wipe the surface around the filler screw clean.
4. Remove the filler screw (1) and place on a clean, lint and dust free surface.
