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Home >> Cadillac >> 2003 >> Seville SLS >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - 4T80-E >> Repair Instructions >> Final Drive Assembly Replacement >> Installation Procedure
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Installation Procedure

  1. Install the sun gear (121) with the bushing and the seal side facing differential.
  2. Install the final drive carrier (100). Turn the unit until it meshes with the sun gear and the internal gear teeth.
    Fig 1: Installing Final Drive Sun Gear & Final Drive Carrier
    G02178007Courtesy of GENERAL MOTORS CORP.
  3. Install the left thrush washer (117).
  4. Install the left differential side gear (118).
  5. Install the snap ring (56).
    Fig 2: Installing Differential Side Gear & Thrust Washer
    G02178008Courtesy of GENERAL MOTORS CORP.
  6. Use the manual shaft to place the transaxle in park.

    This will lock up the final drive unit. The actuator rod will move up.

    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  7. Install the differential housing and the four bolts (119). Hand tighten, using a star pattern.

    Tighten 

    Tighten the bolts to 76 N.m (56 lb ft).

    Fig 3: Installing Differential Housing & Bolts
    G02178009Courtesy of GENERAL MOTORS CORP.
  8. Install the case extension. Refer to CASE EXTENSION REPLACEMENT   .
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