GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Transmission Fluid Pan and Filter Assembly Installation

    Object Number: 1217521 Size: SH
  1. Install the transmission internal oil filter seal (6) onto the transmission internal oil filter (5).
  2. Align the neck of the transmission internal oil filter (5) with the filter hole in the transmission case.
  3. Install the transmission internal oil filter (5).
  4. Make sure the filter is seated.
  5. Install a new oil pan gasket (4) onto the transmission case.
  6. Install the oil pan (3) onto the transmission case.

    7. Notice: Refer to Fastener Notice in the Preface section.

  7. Install 12 oil pan bolts (7).

    8. Tighten
    Tighten the bolts to 27 N·m (20 lb ft).

  8. Install the drain plug seal (2) onto the drain plug (1).

    9. Notice: Refer to Component Fastener Tightening Notice in the Preface section.

  9. Install the drain plug (1).

    10. Tighten
    Tighten the plug to 35 N·m (26 lb ft).