Transfer Case Shift Motor For Chevy GMC 1500 4WD Encoder w/RPO Code NP8 12474401

Transfer Case Shift Motor for Chevy GMC 1500 4WD

This transfer case shift motor with encoder replaces OEM 12474401 on 4WD Chevy and GMC 1500 trucks equipped with RPO code NP8, engaging and disengaging the transfer case on demand.

Overview

This transfer case shift motor for Chevy GMC 1500 4WD trucks restores electronic four wheel drive selection when the original encoder motor fails. The encoder built into this transfer case shift motor reports gear position to the control module so the dash indicator and drive mode stay in sync. It is a direct replacement for the factory 12474401 encoder motor on NP8 equipped trucks.

Built For Performance

• Direct replacement for OEM part number 12474401
• Built-in encoder for accurate position feedback to the 4WD module
• Sealed housing to resist water, mud, and road spray
• Plug-and-play connector matching the factory harness
• Constructed for NP8 two-speed active transfer case systems
• Tested motor windings for consistent torque output

Fits These Machines

• for Chevy Silverado 1500 4WD with RPO code NP8
• for GMC Sierra 1500 4WD with RPO code NP8
• for Chevy Tahoe 4WD with RPO code NP8
• for GMC Yukon 4WD with RPO code NP8

On-The-Job Use

• Replacing an encoder motor that no longer shifts between 2WD and 4WD
• Fixing a transfer case stuck in one range or flashing mode lights
• Servicing trucks used for plowing, towing, and off-road driving

Specs At A Glance

Good To Know

Q: How do I know if my truck uses this shift motor? A: Check the RPO code label in the glovebox for NP8, which identifies the two-speed active transfer case used on these 1500 series trucks. A: Confirming the RPO code before ordering avoids a wrong fit.

Q: Can I install this shift motor myself? A: It mounts to the transfer case with hand tools and connects to the factory harness, making it a common driveway repair. A: Disconnect the battery and clear any stored codes after installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.