GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
1998
🢒
Sonoma Pickup - 2WD
🢒
Driveline/Axle
🢒 Transfer Case - NVG 233-NP1 (Two Speed Selectable)
Driveline/Axle
All Component Locator
Transfer Case Control Component Views
Transfer Case Control Components
All Description and Operation
Data Memory Retention Check
Encoder Signal Check
Encoder Switch Monitor Check
Mode Shifts
Motor and Relay Voltage Checks
Motor/Encoder Circuit Operation
RAM/ROM Check
Range Shifts
Transfer Case Control Module Description
Transfer Case Description
Transfer Case System Description
All Special Tools and Equipment
Special Tools
All Visual Identification
Transfer Case Control Connector End Views
Diagnostic Procedures
Diagnostic Starting Point - Transfer Case
Diagnostic System Check
Symptoms - Transfer Case
Transfer Case Shift Control Switch Indicator Always On - Two or More
Transfer Case Shift Control Switch Indicator Flashes and Returns to Original Mode
Transfer Case Shift Control Switch Indicator Inoperative - One or More
Transfer Case Shift Control Switch Inoperative or 4 Low Indicator Stuck On
Transfer Case Will Not Complete a Mode or Range Shift
Diagnostic Trouble Codes
Diagnostic Trouble Code (DTC) Clearing
Diagnostic Trouble Code (DTC) Displaying
Diagnostic Trouble Code (DTC) List
DTC 001
DTC 002
DTC 003
DTC 004
Electrical/Electronic Schematic Diagrams
Transfer Case Control Schematics
Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
Lubrication Specifications
Removal, Installation, and Replacement
Oil Replacement
Shield Replacement
Transfer Case Replacement
Transfer Case Shift Control Module Replacement
Transfer Case Vent Hose Replacement