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

cadilac iscalade 2007. 6.2 misfiring at bank 1

cadilac iscalade 2007. 6.2 misfiring in bank 1 cylinder 1,3,5,7 ..same time traction light on in cluster.
found only DTC P0300 engine misfiring..no other dtc.idleing very smooth..no misfiring in idle.

chev captive 2007 misfiring

problem- chev captiva 2007 equiped with 4 cyl 2.4 engine misfiring in load...
wht i did..replace MAP sensor for this problem...