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Home >> GMC >> 2011 >> Yukon Base, 5.3 3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0976 or P0977 >> Diagnostic Aids

Diagnostic Aids

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When attempting to set solenoid electrical DTCs, ensure the transmission control module is warmed up and the transmission is operated in 4th gear long enough to ensure a 3°C (37°F) increase in TCM temperature parameter. This will place the transmission control module under the optimal conditions to test solenoid electrical DTCs.