GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Torque Converter (27)

Inspect for damage.

Case Assembly (21)

    • Inspect for porosity or damage on the sealing surfaces
    • Inspect for loose Oil Cooler Line Bolts or damaged Oil Cooler Line Seals
    • Inspect for damaged Manual Shift Shaft Seal (58)
    • Inspect for damaged or worn Axle Seal (61) or Axle Seal Slinger on the axle shafts
    • Inspect for loose Pressure Test Plug (62) and Fluid Level Plug (63)

Torque Converter Housing Assembly (221)

    • Inspect for damaged Torque Converter Housing Assembly (25)
    • Inspect for porosity or damage on the sealing surfaces
    • Inspect for damaged Torque Converter Housing Seal (22)
    • Inspect for damaged or worn Torque Converter Fluid Seal (225)
    • Inspect for loose Torque Converter and Differential Housing Bolts (26)
    • Inspect for damaged or worn Axle Seal (226) or Axle Seal Slingers on the axle shafts

Case Cover assembly (34)

    • Inspect for porosity or damage on the sealing surface
    • Inspect for damaged Case Cover Gasket (33)
    • Inpsect for loose Case Cover Assembly Bolts (35)
    • Inspect for loose Input Speed Sensor (ISS) Bolt (401)
    • Inspect for damaged Input Speed Sensor (ISS) Seal (402)
    • Inspect for loose, damaged or leaking Case Cover Assembly bore plugs

Valve Body Cover Assembly (1)

    • Inpsect for damaged or warped Valve Body Cover Assembly (1)
    • Inspect for damaged Valve Body Cover Gasket (5)
    • Inspect for loose Valve Body Cover Bolts (7) and Valve Body Cover Studs (6)
    • Inspect for damaged or improperly installed Wire Connector Hole Seal (10)
    • Inspect for damaged or worn Fluid Level Indicator Seal
    • Inspect for plugged vent holes in the Fluid Level Indicator (2)