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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Transfer Case - Mp 3025 (NQH)) >> Description and Operation >> Transfer Case Description and Operation >> 2WD Mode Power Flow

2WD Mode Power Flow

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying 2WD Mode Power Flow Components
GM4994663Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
1 Transfer Case Input Shaft
2 Transfer Case Scissor Mechanism Lever
3 Transfer Case Four Wheel Drive Clutch
4 Transfer Case Front Output Shaft Drive Chain Assembly
5 Transfer Case Rear Output Shaft
6 Transfer Case Two/Four Wheel Drive Actuator Shaft Gear
7 Transfer Case Two/Four Wheel Drive Actuator Cam
8 Transfer Case Front Output Shaft


Fig 1: Identifying 2WD Mode Power Flow Components
GM4996992Courtesy of GENERAL MOTORS COMPANY

When the MP 3025 ATC is in the 2WD mode, the power flows from the transmission (1) to the input shaft (2). The input shaft (2) is connected to the rear output shaft (4) by the high/low clutch (3). The high/low clutch (3) outer teeth are engaged with the input shaft (2) inner, high-speed position teeth. At the same time the high/low clutch is slip splined to the rear output shaft (4). The rear output shaft (4) delivers the power flow to the rear propshaft (5). The position of the control actuator shaft (7) allows no clutch (6) engagement. The high/low range shift fork (8), is in the high-speed position on the control actuator shaft (7).