Power Liftgate Stops or Will Not Close from Open Position

The power liftgate may stop when opening from the fully closed position (usually opening not more than 15 inches, or 38 cm) or will not close from the open position on some 2018-2019 Equinox and Terrain models. DTCs B153E (Liftgate Position Sensor Signal Circuit), B153F (Liftgate Object Sensor Signal Circuit) or B396A (Left Liftgate Motor Control Circuit) may be set in the power liftgate module.

 

DTCs B153E or B396A

If DTCs B153E or B396A are set, the cause may be that the male terminals in the body harness 10-way in-line connector to the liftgate power assist actuator may not be dimensionally stable or may be misaligned, causing intermittent electrical contact. (Fig. 12)

Fig. 12

Lower the left rear portion of the headliner to access the body harness to liftgate assist actuator connector. (Fig. 13)

Fig. 13

Inspect the body harness male in-line connector for any bent or misaligned terminals. (Fig. 14) Straighten any misaligned terminals and reconnect the connectors. Verify proper opening and closing of the power liftgate.

Fig. 14

 

DTC B153F

If DTC B153F is set, check that the male terminals in the liftgate object sensor connector to the liftgate harness are stable. Any misaligned terminals may cause intermittent electrical contact.

Remove the liftgate upper center and upper side trim panels to access the B71L Liftgate Object Sensor – Left or B71R Liftgate Object Sensor – Right connectors. (Fig. 15)

Fig. 15

Check for any bent or misaligned terminals in the liftgate object sensor male in-line connector. (Fig. 16) Straighten any misaligned terminals and reconnect the connectors. Verify proper opening and closing of the power liftgate.

Fig. 16

Do not replace the liftgate power assist actuator or the power liftgate module before inspecting the connectors.

 

– Thanks to Rob Smith and Kris Villegas

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