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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Transfer Case - NVG 246-NP8 - Service & Diagnosis) >> Description and Operation >> Transfer Case Description and Operation >> Service 4WD Indicator

Service 4WD Indicator

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The Service 4WD indicator is an integral part of the cluster and cannot be serviced separately. This lamp is used to inform the driver of the vehicle that a transfer case system malfunctioned. The Service 4WD indicator is controlled by the transfer case shift control module via Class 2.