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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls - 6.5L) >> Repair Instructions >> Powertrain Control Module (PCM) Programming >> Programming the TDC Offset

Programming the TDC Offset

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The PCM will automatically activate the TDC offset program when the engine coolant is more than 77°C (170°F). If the PCM is not programmed with a TDC offset, a DTC P1214 will set.