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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 1549 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Diagnostic Information and Procedures >> DTC B1289 >> Circuit/System Description
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Circuit/System Description

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The radio can control the video display brightness on vehicles equipped with rear seat entertainment (RSE) video. The radio varies a pulse with modulated (PWM) signal to the rear entertainment video screen to command the screen brightness to the desired level.

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