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Fault code 200A: Internal fault in control unit
Backlighting works but gauges do not
Intermittent or complete loss of ABS function
These faults are often traced back to failed or degraded ECU circuitry at key signal pins
This is a repair service for electronic turbo actuators with part numbers NH950107 and K6T51271
Allison T14/A50 Transmission Control Module repair ECU Fault code 200A: Internal faultThe Allison T14 A50 Transmission Control Module (TCM) is a common component in 2009 2015 Chevrolet and GMC trucks with the 6. 6L Duramax engine. These TCMs are known to fail, often due to internal circuit board issues, leading to various transmission problems. A failed TCM can result in messages like "Range Shift Inhibited," "Service Brake System," or "Service Stabilatrak". Other symptoms include erratic shifting, loss of the gear shift indicator, and
