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Home >> Chevrolet >> 2016 >> Suburban 3500 HD LT >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer Case - Mp 3023/3024 (NQH) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC C0364 or C0379: Front Axle System >> Circuit/System Description

Circuit/System Description

The front axle control circuit consists of an electric motor actuator which engages and disengages the front axle. The front axle engagement actuator consists of a permanent magnetic motor, a worm gear controlled plunger, a front axle switch and an electronic control circuit within the actuator assembly.

The front axle engagement actuator contains the following circuits:

When a shift to 4WD Auto, 4WD High, or 4WD Low is requested, the transfer case control module engages the front axle by grounding the front axle actuator control circuit through a current limiting driver.

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