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Control Module References for TCSCM replacement, setup, and programming Transfer Case High/Low Clutch Reset Four-Wheel Drive Does Not Engage Four-Wheel Drive Does Not Disengage Front Drive Axle Actuator Replacement FRONT AXLE WILL NOT DISENGAGE Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. Circuit/System Description The front axle control circuit consists of an electric motor actuator which engages and disengages The front axle actuator consists of the following circuits: The front axle control circuit, which is also connected to the transfer case shift control The front axle switch circuit, which is also connected to the transfer case shift control An ignition 3 voltage circuit A ground circuit When a shift to AUTO 4WD, 4HI, or 4LO is requested, the transfer case shift control module Reference Information Schematic Reference Transfer Case Control Schematics
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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