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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B3445 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) supplies battery positive voltage to the center high-mounted stop lamp (CHMSL), powertrain control module (PCM), engine control module (ECM) and antilock brake system (ABS) module through the stop lamp supply voltage circuits when the brakes are applied.

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