GM Service Manual Online
For 1990-2009 cars only

Checks

Cause

Oil Pan Fluid Leak

  • Oil Pan (28)

The pan is damaged or the pan is not flat.

  • Gasket (29)

Damaged or mispositioned

  • Case (7)

Porosity or cracked

  • Bolt (27)
    â€¢ The flange is inside out.
    â€¢ High or low torque

Fill Tube Fluid Leak

  • Seal
    â€¢ Cut or nicked
    â€¢ Missing
  • Case (7)

Porosity

  • Fill Tube
    â€¢ Damaged at the case end
    â€¢ Not seated in the case
  • Brackets

Out of position, causing tension on the fill tube

Electrical Connector Fluid Leak

  • Electrical Connector

Damaged, or not seated

  • O-ring Seal
    â€¢ Cut or nicked
    â€¢ Missing
  • Case (7)

Porosity or cracked

Cooler Connector Fluid Leak

  • Cooler Connectors (8)
    â€¢ Stripped threads
    â€¢ Damaged flare
    â€¢ High or low torque
  • Case (7)
    â€¢ Stripped threads
    â€¢ Porosity
    â€¢ Debris in the threads

Case Extension Fluid Leak

  • Case Extension (19)

Porosity or cracked

  • Case (7)

Porosity or cracked

  • Seal (15)
    â€¢ Cut or nicked
    â€¢ Missing
  • Bolt (21)
    â€¢ Low torque
    â€¢ Missing

Manual Shaft Fluid Leak

  • Seal (707)
    â€¢ Cut or nicked
    â€¢ Not seated
  • Linkage

Misadjusted

Pump Body Seal Fluid Leak

  • Seal (201)
    â€¢ Cut, nicked, or worn
    â€¢ Missing garter spring
  • Torque Converter (1)

Damaged hub

  • Bolt

Low Torque

Vehicle Speed Sensor Fluid Leak

  • Seal

Cut, missing, or nicked

  • Vehicle Speed Sensor Assembly (22)
    â€¢ Damaged
    â€¢ Not seated
    â€¢ Damaged bracket
  • Bolt (23)
    â€¢ Low torque
    â€¢ Missing
    â€¢ Damaged threads
  • Case (7)

Porosity or cracked

Output Shaft Seal Fluid Leak

  • Seal (20)

Cut or nicked

  • Case (7)

Porosity or cracked

Line Pressure Plug Fluid Leak

  • Plug (24)
    â€¢ Stripped threads
    â€¢ Low or high torque
  • Case (7)
    â€¢ Porosity or cracked
    â€¢ Damaged threads