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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1992 (Automatic Transmission - 2MT70 - DTC P0218 To DTC P0963) >> DTC P0776 or P0777 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform the Line Pressure Check procedure.
    • If the pressure is out of specification, correct this concern first.
  2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection .
    • If a concern is found, repair or replace the control solenoid (w/body and TCM) valve assembly.
  3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test .
    • If the solenoid is found to be leaking or stuck closed, replace the control solenoid (w/body and TCM) valve assembly.
  4. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.
    • If a concern is found in the valve body, repair or replace the valve body as necessary.
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