Power Seats — Description (Chevrolet Trailblazer 1)

1. The electric drive allows you to adjust the position of the seats without applying any effort. These models feature electrically adjustable seats that can be adjusted in six directions. The movement is achieved by means of three reversible servomotors, which are enclosed in a single casing. The adjustment is controlled via switches located on the sides of the seats. When the switch is pressed, the polarity of the current on the servomotors can change, thereby changing the direction of movement of the seat.

2. Diagnosis can be performed easily by performing the operations described below.

3. Make sure there are no objects under the seat that could impede movement.

4. If the electric drive is completely inoperative, inspect the circuit breaker.

5. Turn off the engine to reduce the noise level and, moving the regulators to various positions, listen to the sound coming from the servomotors.

6. If the servo motors make abnormal noise or do not work, measure the supply voltage. In this case, the assistant must control the seat via switches. Operate the switches with the door open. If you notice that the interior lighting is dimming, inspect the seat guides for foreign objects.

7. If the servo motor does not work even though power is supplied to it, remove it from the vehicle and test it using the connecting wires. If the servomotor is not confirmed to be operational, replace it.

8. If there is no power supply to the servo motor, remove the switch and check the power supply. If there is no power, examine the circuit between the fuse box and the switch. If battery power is supplied, check the voltage at the other terminals by moving the switch to the appropriate positions. If the switch is working, examine the circuit between it and the servo motor for an open or short circuit.

9. After restoration, make sure the electric drive is operational.