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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (Automatic Transmission - 4L80-E/4L85-E - DTC P0218 To DTC P0976) >> DTC P0751 >> Conditions for Setting the DTC >> Condition 2

Condition 2

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

The TCM commands 4th gear, and the gear ratio indicates 3rd gear, 0.98:1 to 1.03:1, and the TCC Duty Cycle is 55 percent or greater for 4 seconds or greater.