APDTY 711010 4 Wheel Drive Transfer Case Shift Encoder Actuator Motor Fits Select Chevrolet or GMC Trucks (NP1, View Vehicle Chart or Description; Replaces 19125850, 19125856, 19125578, 889623122) Specifically Designed For Models Listed With NP263 Electric Shift Transfer Case NP263 or New Process 263 Transfer Case Can Be Identified By RPO Code NP1 The RPO Code Can Be Found On A Large White Sticker On The Inner Glove or Console Door Also Identified By 1 Single 5-Pin Wire Wiring Harness Pigtail Connector Replaces General Motors 19125850, 19125856, 19125578, 88962312 Shift Actuator Motor