How to Diagnose Your Chevy Power Seat Motor Issues

The best part about having power seats is that you can set the seat where you like it, and it is easy to make adjustments as you drive without distracting you from the road. The power seat moves up and down and front to back. Some power seats may have more than one motor to operate these actions. In some Chevrolet models, you may have memory seating, which allows more than one driver to program the seat to fit their driving habits. When a seat is not operating as it should, there is either a mechanical or an electrical problem.

Chevy power seat

Tools Needed

  • Flashlight
  • Multimeter
  • Test light
  • Two jumper wires - at least one to two feet in length

Use the following troubleshooting tips to determine the source of the problem:

  • One of the easiest ways to test your GM seat is to check the rails for obstructions before doing anything else. Use your flashlight to look under the seat and into the rails.
  • Determine whether the problem is with both seats or just one seat. If both seats are inoperable, check the Chevrolet fuses and the circuit breaker for a blown fuse or a tripped breaker. If the fuse is blown, replace it with the appropriate fuse.

If these suggestions fail to produce a solution, you may need to check the GM motor to the power seats. Here are additional troubleshooting procedures.

  1. Turn the ignition on without starting the engine. Sit in the inoperable power seat and try the motor. Listen for the motor, and if you cannot hear it, you will need to lift the switch from either the side of the seat or the door panel.
  2. Unplug the switch. You will use the multimeter to test the switch for continuity. Replace the switch if the continuity fails.
  3. If you have a relay between the switch and a failed motor, test it by operating the switch. You want to determine whether you are getting any voltage from the switch. Use a test light to test for outgoing voltage on relay to the motor. Ensure the relay is grounded. You may need to move your GM seat to the side or remove it in order to perform this test. If you do not detect any voltage, look for an open or shorted wire. Test the relay for operation if you fail to detect any outgoing voltage. You may need to replace the relay.
  4. Use a test light to determine whether there is any incoming voltage at the failed motor. If the voltage is absent, test for open wires or a short between the motor and the relay or switch.
  5. Make sure the drive assembly-transmission, tracks and gears are all in good condition. Replace or repair any of your Chevrolet parts that are worn out.

Take your GM seat motor out and use the car battery to test it. You can connect it to the battery by using the jumper wires. If it still fails, you need to replace it.

If you fail to find the problem with your GM, you may wish to consult with your Chevrolet or GM dealership for additional assistance.