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Home >> Buick >> 2005 >> Century Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - Introduction & Repair Instructions >> Repair Instructions >> Control Valve Body Replacement >> Installation Procedure
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Installation Procedure

    NOTE: Do NOT use any type of grease to retain parts during the assembly of this unit. Using greases other than the recommended assembly lube changes the transaxle fluid characteristics. Using greases other than the recommended assembly lube causes undesirable shift conditions and/or filter clogging. Use TRANSJEL™ J 36850 or equivalent during the assembly of this unit.
    Fig 1: Locating Ball Check Valves In Case Cover
    GM48229Courtesy of GENERAL MOTORS CORP.
  1. Install the ball check valves (372) into the case cover. Use the J 36850 to retain the ball check valves in their proper locations.
    2. Fig 2: View Of Control Valve Body Spacer Plate And Gasket Assembly
    GM768830Courtesy of GENERAL MOTORS CORP.
  2. Install the gasket and spacer plate assembly (396).
    3. Fig 3: Locating Ball Check Valves In Valve Body
    GM49399Courtesy of GENERAL MOTORS CORP.
  3. Install the ball check valves (372 and 373) into the valve body. Use the J 36850 to retain the ball check valves in their proper locations.
    4. Fig 4: Identifying Control Valve Body Assembly Components
    GM768829Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do NOT use impact type tools on the valve body or on the oil pump.
  4. Install the spacer plate/gasket assembly (396) and the valve body (300).
    5. Fig 5: Identifying Valve Body Bolts
    GM164796Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  5. Install the valve body bolts (374-381, 384).

    Tighten: 

    • Tighten the M6 X 1.0 X 20 bolt (381) to 8 N.m (70 lb in).
    • Tighten the M6 X 1.0 X 30 bolt (376) to 12 N.m (106 lb in).
    • Tighten the M6 X 1.0 X 45 bolt (377) to 12 N.m (106 lb in).
    • Tighten the M6 X 1.0 X 55 bolt (378) to 12 N.m (106 lb in).
    • Tighten the M6 X 1.0 X 60 bolt (375) to 12 N.m (106 lb in).
    • Tighten the M6 X 1.0 X 65 bolt (374) to 12 N.m (106 lb in).
    • Tighten the M6 X 1.0 X 85 bolt (384) to 12 N.m (106 lb in).
    • Tighten the M6 X 1.0 X 95 bolt (379) to 16 N.m (11 lb ft).
    • Tighten the M8 X 1.25 X 90 bolt (380) to 25 N.m (18 lb ft).

  6. Install the oil pump. Refer to Oil Pump Replacement .
  7. Install the case side cover. Refer to Case Side Cover Replacement .
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