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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Envoy - 4WD 🢒 General Information 🢒 General Information 🢒 Lubricant Level Check

Lubricant Level Check 8.6 Inch Axle

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Make sure the vehicle is level.
  3. Inspect the rear axle for leaks. Repair as necessary.
  4. Clean the area around the rear axle fill plug.

    5. Object Number: 390116 Size: SH
  5. Remove the rear axle fill plug.
  6. Fabricate a dipstick from a pipe cleaner or similar item. Form the pipe cleaner into an "L".
  7. Insert the pipe cleaner into the fill plug opening with the stem facing down.
  8. Remove the pipe cleaner and measure the distance from the bend in the pipe cleaner to the lubricant level.

    9. Specification
    The distance between the bend and the lubricant level should be 15-40 mm (0.6-1.6 in).

  9. If the measurement is greater than 40 mm (1.6 in), add lubricant until the level is between 15-40 mm (0.6-1.6 in) from the bottom edge of the fill plug hole. Use the proper fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.

    10. 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.

  10. Install the rear axle fill plug.

    11. Tighten
    Tighten the rear axle fill plug to 33 N·m (24 lb ft).

  11. Lower the vehicle.

Lubricant Level Check 7.6 Axle

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Make sure the vehicle is level.
  3. Inspect the rear axle for leaks. Repair as necessary.
  4. Clean the area around the rear axle fill plug.

    5. Object Number: 607207 Size: SH
  5. Remove the rear axle fill plug.
  6. Inspect the lubricant level.

    7. Specification
    The lubricant level should be between 0-10 mm (0-0.4 in) below the fill plug opening.

  7. If the level is low, add lubricant until the level is even with the bottom edge of the fill plug opening. Use the proper fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.

    8. 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.

  8. Install the rear axle fill plug.

    9. Tighten
    Tighten the rear axle fill plug to 33 N·m (24 lb ft).

  9. Lower the vehicle.