GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Blazer - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - NVG 236 (Two Speed Automatic) 🢒 Oil Replacement

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 165441 Size: SH
  2. Remove the fill plug.
  3. Place a container under the drain plug in order to catch the oil.
  4. Remove the drain plug. Allow the oil to drain.

Installation Procedure

    Object Number: 165441 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: 

       • Ensure the drain plug is made of aluminum. A steel drain plug will cause accelerated corrosion that will destroy the magnesium case.
       • Do not use an impact tool to install the drain plug.

  1. Install the drain plug.

    2. Tighten
    Tighten the drain plug to 47 N·m (35 lb ft).

  2. Fill the transfer case with oil. Refer to Approximate Fluid Capacities .
  3. Fill the transfer case to the bottom of the oil fill plug hole.

    4. Important: 

       • Ensure the fill plug is made of aluminum. A steel fill plug will cause accelerated corrosion that will destroy the magnesium case.
       • Do not use an impact tool to install the fill plug.

  4. Install the oil fill plug.

    5. Tighten
    Tighten the oil fill plug to 47 N·m (35 lb ft).

  5. Lower the vehicle.