GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Chevrolet C-Series Medium Duty Truck B7 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Transmission Fluid Filler Tube and Seal Replacement

Removal Procedure
  1. The Allison 2000/2400 transmission case has provisions that enable the fill tube to be installed on either the right or left side of the transmission. Proceed to step 8 if servicing the plug and/or seal opposite the fill tube.
  2. Remove the transmission fluid level indicator.

    3. Object Number: 201609 Size: SH
  3. If servicing the indicator tube from the left side remove the bolts, the nuts and the straps.

    4. Object Number: 201607 Size: SH
  4. If servicing the indicator tube from the right side remove the bolts, the nuts and the straps.
  5. Place a drain pan under the transmission.
  6. Loosen the indicator tube from the transmission.
  7. Remove the indicator tube and seal from the vehicle.

    8. Object Number: 658984 Size: SH
  8. Remove the fill tube plug (1).
  9. Remove the fill tube plug seal (2).

Installation Procedure

    Object Number: 658984 Size: SH
  1. Install a new fill tube plug seal (2) into the main housing.
  2. Align the tab on the fill tube plug (1) with the tang on the main housing.
  3. Install the fill tube plug (1). Press the plug into the seal (2) until the tab on the fill tube plug locks into place in the notch on the main housing.
  4. Install the new indicator tube seal to the transmission.
  5. Install the indicator tube to the transmission

    6. Object Number: 201607 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.

  6. If servicing the indicator tube from the right side install the bolts, the nuts and the straps.

    7. Tighten
    Tighten the indicator tube bracket bolts to 20 N·m (15 lb ft).


    Object Number: 201609 Size: SH
  7. If servicing the indicator tube from the left side remove the bolts, the nuts and the straps.

    8. Tighten
    Tighten the indicator tube bracket bolts to 20 N·m (15 lb ft).

  8. Install the transmission fluid level indicator.
  9. Check and fill the transmission to the proper level with DEXRON III fluid. Refer to Fluid Capacity Specifications .