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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 251 (Automatic Transmission - 2ML70 - DTC P0218 To DTC P0967) >> DTC P07A9 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform the Line Pressure Check .
    • If you found a concern, repair the concern.
  2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test .
    • If a concern is found, replace the control solenoid (w/body and TCM) valve assembly.
  3. Inspect the hybrid low, 1-2 clutch boost valve assembly, for sticking or damage.
    • If you found a concern with the hybrid low, 1-2 clutch boost valve assembly, repair or replace the valve or valve body.
  4. Inspect the 1-3 clutch assembly for a stuck ON or damaged condition.
    • If you found a 1-3 clutch assembly concern, repair or replace the 1-3 clutch assembly as necessary.
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