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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (ENGINE CONTROLS - 8.1L - DIAGNOSTICS (DTCs P0506-U0107)) >> DTC P2108 >> Circuit Description

Circuit Description

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The throttle actuator control (TAC) module contains data which is essential for proper TAC System operation. The TAC module continuously tests the integrity of this data. When the TAC module is unable to write or read data to and from random access memory (RAM), or the TAC module is unable to correctly read data from the flash memory or an internal TAC module processor fault is detected, this DTC sets.