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Circuit Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The 4WD low signal circuit is used to notify the transmission control module (TCM) that the vehicle is in 4WD low range.

DTC P2771 is a type B DTC.

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