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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0989 To DTC P2764) >> DTC P2719, P2720 or P2721 >> Conditions for Setting the DTC >> DTC P2721

DTC P2721

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

The TCM detects an internal high voltage electrical malfunction of the clutch PC solenoid 4 control circuit for 300 milliseconds.

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