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Home >> GMC >> 1998 >> Forward Control 7.4 B >> Repair and Diagnosis >> External Pages >> Different car >> Section 547 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2628: Display Dimming Pulse Width Modulation (PWM) Output Circuit High >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The BCM controls the illumination of the following lamps through pulse width modulation when the park lamps or the headlamps are ON: