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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2771 >> Circuit/System Verification

Circuit/System Verification

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NOTE:

It may be necessary to drive the vehicle slightly forward to engage 4LO on the transfer case.

Verify the scan tool displays Disabled when you select 4HI and Enabled when you select 4LO.

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