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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 250 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0971) >> DTC P0716 or P0717 >> Circuit/System Verification

Circuit/System Verification

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Start the engine in Park and observe the transmission ISS on the scan tool while varying the engine speed. The transmission ISS should vary with the engine speed and not drop out.

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