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Home >> Hummer >> 2007 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 1369 (Automatic Transmission - 6L50/6L80/6L90 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information and Procedures >> Fluid Leak Diagnosis >> General Method

General Method

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  1. Verify that the leak is transmission fluid.
  2. Thoroughly clean the suspected leak area.
  3. Operate the vehicle for 24 km (15 mi), or until normal operating temperatures are reached.
  4. Park the vehicle over clean paper or cardboard.
  5. Shut OFF the engine.
  6. Look for fluid spots on the paper.
  7. Make the necessary repairs.
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