Steps to Fix Your Malfunctioning Chevrolet Door Lock Actuator
Your Chevrolet door lock actuator is an important component of the locking assembly. When it is damaged or not functioning correctly, it can be quite a hassle and a safety risk. If you are up for the challenge, fixing a defective actuator is relatively easy. Just follow the steps provided below, and you can save some big bucks as well as gain bragging rights.
Difficulty level: Moderate
Things you'll need:
- Drill and drill bits or a dremel tool with grinding bit
- Torx driver or screwdriver
- Gear puller
- Vise or arbor press
- Safety glasses
- Protective gloves
Step 1:Remove the interior door panel to access the mechanism inside. Make sure to mark all the screws, bolts, and clips to avoid confusion when putting everything back later.
Step 2:Take out the cable “L” bracket by drilling off the two rivet heads securing the bracket onto the actuator case. Make sure not to damage the surrounding actuator structure and to only machine off the rivet heads. The actual shank of the rivets stays in position.
Step 3:Place your Chevrolet door lock actuator in the locked position like when the door is closed. Then, take out the torx screws around the edge of the actuator case. This step is vital so you can remove and install the case halves easily. Take out the top of the case; the motor usually comes with it. Unplug the motor from the top case.
Step 4:Skip this step if you are getting a motor with preinstalled pinion gear. To remove the brass pinion gear from the old motor, use a small gear puller such as a 2mm shaft puller. Alternatively, you can secure the old motor in a vice and use a small pair of needle nose pliers to hold the back of the gear while gently hitting with a small hammer. This should slide the gear off the shaft. Make sure not to damage the brass gear, as you will use it again later. Then, using a vise or arbor press, press the old gear onto the new motor shaft.
Step 5:Position the new motor or gear back into your Chevrolet door lock actuator; make sure it engages with the mating spur gear. Confirm that all metal filings are taken out of the actuator case. Keep in mind that motors are the same for the front and back but are usually marked to indicate which side of actuators they fit into, whether it is for the driver's side or the passenger's side.
Step 6:Reattach the top half of lock actuator case. Screw in the torx screws firmly around the edge. Make sure not to over-torque them.
Step 7:Reconnect the cable “L” bracket by drilling or tapping the remaining rivet shank and fitting small screws or washers. On the other hand, you can also spot weld the bracket back onto the shank of the rivet. Since the rivet is high-strength steel, use high-quality tap.
Step 8:Test the actuator by operating the mechanism several times. Reinstall the interior door panel.