GM 13584872 Lift Gate Latch Assembly

After every 3000 miles or at least once in three months, you should add some light oil or lock lubricant on the hinges and latch assemblies of your doors, hood, trunk or liftgate. To prevent wear and tear and ensure smooth movement, lightly apply grease to the door latch strikers. Use a graphited lubricant spray to grease the locks of car doors as well as trunks (or lift gates).

Open the trunk lid/liftgate. Remove the pushpins securing the trunk lid liner, or remove the liftgate trim panel. Disconnect the electrical connector from the Trunk Latch assembly and the rod to the Trunk Lock Cylinder, if equipped. Remove the bolts securing the latch to the lid or liftgate. Remove the Trunk Latch assembly. Installation is the reverse of removal. Remove the pushpins securing the trunk lid liner. Disconnect the Trunk Lock Cylinder actuating rod. Remove the Trunk Lock Cylinder retaining clip. Remove the Trunk Lock Cylinder from the trunk lid. Installation is the reverse of removal.

To remove the tailgate handle, start by removing the handle mounting bolts from the bedside. Then, carefully pry or pull off the handle trim cover. Next, rotate the plastic retaining clips off the control rods and detach the rods from the handle. After that, remove the latch mounting bolts and withdraw the latch from the end of the tailgate. If equipped, detach any linkage to the lock cylinder. To reinstall, simply reverse the removal steps and tighten all fasteners securely.

To remove the door latch, start by removing the door trim panel and water shield. Then, remove the retainers for the cable and disconnect the electrical connector from the latch. Detach the rods from the latch and remove the latch mounting fasteners. For installation, simply reverse the removal process. To remove the outside handle, open the door and remove the small access cover. Loosen the retainer but do not remove it. Pull the door handle out halfway and remove the small cover, then remove the handle. Installation is the reverse of removal. To remove the door lock cylinder, remove the door trim panel and plastic water shield. Remove the door handle and disconnect the latch rod from the lock cylinder and handle rod. Remove the fastener securing the door handle housing and release the retainer from the rear of the door lock cylinder. Push the lockout of the housing. Installation is the reverse of removal.

The power door lock system operates using door lock actuators mounted in each door and includes switches, actuators, lock and unlock relays, the Body Control Module (BCM), and associated wiring. Diagnosis usually involves simple checks of wiring connections and actuators for minor faults. The system utilizes bi-directional solenoids in the doors, mounted as part of the door latch. Lock switches have Lock and Unlock positions, sending signals to the BCM, which activates the door lock relays, providing voltage to each door lock solenoid. To troubleshoot, check circuit protection first, including fuses and circuit breakers. Verify voltage at the switches and check for continuity; if necessary, replace faulty switches. Check the wiring between the switches, BCM, door lock relay, and solenoid if needed. In case of an inoperative solenoid, test for voltage and ground, check for breaks in the wiring, and replace the solenoid if necessary. Communication for the power door lock system passes through the Body Control Module, and if the issue remains unresolved, retrieve trouble codes from the BCM using a scan tool. The keyless entry system uses a remote control transmitter sending an infrared signal to the receiver to operate the door lock system. Replace the battery when the transmitter's range decreases. To replace the key remote control battery, carefully separate the case halves, replace the battery, and snap the case back together. Programming replacement transmitters requires a specialized scan tool, so take the vehicle and transmitters to a dealer or qualified repair shop with the necessary tool to have the transmitter(s) programmed into the vehicle. Up to eight key fobs can be programmed to one car, and all fobs must be present during reprogramming.

To remove the tailgate handle, start by removing the handle mounting bolts from the bedside. Then, carefully pry or pull off the handle trim cover. Next, rotate the plastic retaining clips off the control rods and detach the rods from the handle. After that, remove the latch mounting bolts and withdraw the latch from the end of the tailgate. If equipped, detach any linkage to the lock cylinder. To reinstall, simply reverse the removal steps and tighten all fasteners securely.

To remove the tailgate handle, start by removing the handle mounting bolts from the bedside. Then, carefully pry or pull off the handle trim cover. Next, rotate the plastic retaining clips off the control rods and detach the rods from the handle. After that, remove the latch mounting bolts and withdraw the latch from the end of the tailgate. If equipped, detach any linkage to the lock cylinder. To reinstall, simply reverse the removal steps and tighten all fasteners securely.

To remove the door latch, start by removing the door trim panel and water shield. Then, remove the retainers for the cable and disconnect the electrical connector from the latch. Detach the rods from the latch and remove the latch mounting fasteners. For installation, simply reverse the removal process. To remove the outside handle, open the door and remove the small access cover. Loosen the retainer but do not remove it. Pull the door handle out halfway and remove the small cover, then remove the handle. Installation is the reverse of removal. To remove the door lock cylinder, remove the door trim panel and plastic water shield. Remove the door handle and disconnect the latch rod from the lock cylinder and handle rod. Remove the fastener securing the door handle housing and release the retainer from the rear of the door lock cylinder. Push the lockout of the housing. Installation is the reverse of removal.

The keyless entry system consists of a remote control transmitter that sends a coded infrared signal to a receiver, which operates the door lock system.

For Cobalt/GS and ION models, disconnect the rod from the latch mechanism to the outside door handle and any electrical connectors from the latch assembly, if applicable. Remove the latch mounting bolts and the inside handle retaining screw on ION models, and take out the handle, cable/rods, and latch as an assembly from the door.

To remove the latch from an access door, you need to remove the trim around the latch to access it for removal or adjustment. Access doors use two latches, one at the top and one at the bottom.

To remove the inside release handle from a door, release its cable and remove the mounting fasteners.

The components that can be removed and installed are the latch, lock cylinder, outside handle, inside release handle, and latch strikers.

The outside handle can be removed by either removing the bolt cover and bolt, or by unclipping the lock trim cover and using a hooked tool to hold the bellcrank lever in the partially opened position while removing the handle.

When troubleshooting the power door lock system, it's advisable to check circuit protection first, followed by checking for voltage at the switches and testing switch continuity. If necessary, check the wiring between the switch and door lock solenoid. If a solenoid is not receiving voltage, investigate for an open or short in the wire between the solenoid and relay.

They should be lubricated with spray-on graphite lubricant.

Up to eight key fobs can be programmed to one car, and all fobs must be present during the reprogramming process.