Rear Window Glass Will Not Open

The rear window glass on the liftgate of some 2021-2022 Tahoe, Suburban, Yukon and Escalade models (Fig. 12) may not open when using the switch on the liftgate or the Remote Keyless Entry transmitter (key fob) button. In some cases, the rear wiper arm may not by fully moving to the park position, even though the rear wiper arm looks to be in the correct position, which prevents the back glass from opening.

 

Fig. 12

 

If the rear window glass will not open, remove the wiper arm and operate the rear wiper. (Fig. 13) Turn on the rear wiper switch, allow the wiper motor to cycle and then turn off the switch.

 

Fig. 13

 

Next, reinstall the wiper arm and check that the wiper arm is in the full park position with the arm on the park ramp, allowing the back glass to open properly.

If the rear window glass will not open after cycling the rear wiper motor, replace the rear wiper motor assembly. (Fig. 14)

 

Fig. 14

 

Refer to #PIT5941 for additional information.

– Thanks to Paul Radzwilowicz

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