CHEV THAOE 2004 REDUCE ENGINE POWER

LAST MONTH I HAD THIS PROBLEM WITH THAOE 2004. REDUCE ENGINE POWER..OR
NO ENGINE POWER..IN FULL THROTAL..FOUND ONLY ONE DTC..SIRIAL DATA CIRCUT FAULT..ECM TO TAC CONTROL MODULE..

CAUSE: CORRODED EARTHING WIRE FOR TAC CONTROL MODULE  ..BELOW BANK 2 HEAD ABOVE BELL HAUSEING.REPAIRED FULTY TAC EARTH ...DON'T REPLACE ANY  CONTROL MODULE