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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 >> Circuit/System Verification

Circuit/System Verification

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. Clear the DTC.
  2. Operate the vehicle from EVT 1 through 4th gear while observing the 1-3 Clutch Slip parameter. Stop the vehicle and turn the ignition OFF for 30 seconds. Perform this action 2 times. The 1-3 Clutch Slip parameter display should be greater than 0 RPM when the 1-3 Clutch Status parameter displays Released.
    • If any other transmission DTCs are set, diagnose those first.
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