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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 5ET50 (MKE)) >> Diagnostic Information and Procedures >> Control Valve Body Diagnostic Inspection >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Remove the control valve body assembly. Refer to Control Valve Body Replacement .
    WARNING: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
    CAUTION: After cleaning the transmission components, allow to air dry. Do not use cloth or paper towels in order to dry any transmission components. Lint from the towels can cause component failure.
    CAUTION: Do not reuse cleaning solvents. Previously used solvents may deposit sediment which may damage the component.
  2. Clean and inspect all control valve body assembly components for the following conditions listed below:
    • Stuck or scored control valve
    • Scored or damaged control valve body bore
    • Broken, weak or damaged control valve return spring
    • Missing, damaged or stuck check ball
    • Missing, restricted or out of position modulated fluid pressure orifice
    • Missing or damaged control valve retainer
    • Debris or sediment
      • If a condition is found and cannot be repaired by cleaning 

        Replace the control valve body assembly.

      • If a condition is not found 
  3. All OK
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