GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 DTS 🢒 Transmission 🢒 Automatic Transmission - 4T80-E 🢒 Case Cover Assembly Installation

    Object Number: 11993 Size: SH
  1. Inspect the case cover (33) mating surfaces for nicks, burrs, or damage.

    2. Object Number: 11994 Size: SH
  2. Inspect the case cover to case mating surfaces for nicks, burrs, or damage.
  3. Inspect the cooler fitting and inspect the seal for damage.

    4. Object Number: 11863 Size: SH
  4. Install the new island gasket (43) and the new case cover gasket (44) over the dowel pins on the case. Pass the wiring harness through the large opening at the top of the case cover gasket. Make sure that the wiring harness remains under the gasket, except for the portion where the connectors are attached.
  5. Install the case cover assembly (33). Pass the wiring harness assembly through the opening at the top of the case cover. Do not pinch the wires.

    6. Object Number: 11996 Size: SH
  6. Install the case cover bolts (45-50), and hand tighten the bolts.

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


    Object Number: 11995 Size: SH
  7. Tighten the case cover to case bolts.
    8. • Tighten case cover to case stud (45) to 20-27 N·m (15-20 lb ft).
    • Tighten case cover to case bolt (46) to 20-27 N·m (15-20 lb ft).
    • Tighten case cover to case stud (47) to 27-31 N·m (20-23 lb ft).
    • Tighten case cover to driven sprocket support bolt (48) to 20-27 N·m (15-20 lb ft).
    • Tighten case cover to case stud (49) to 27-31 N·m (20-23 lb ft).
    • Tighten case cover to case bolt (50) to 27-31 N·m (20-23 lb ft).

    Object Number: 11862 Size: SH
  8. Install the two checkballs (65).