Engine Power is Reduced Chevy Tahoe Motor 5.3L P0121 ,C0242, P0641

2008 CHEVROLET TAHOE/SILVERADO Motor 5.3L.
Con Los Siguientes Problemas.
Engine Power is Reduced. Service Traction Control. Stabilitrak OFF .Service Stabilitrak .Check Engine . Triangulo Naranja/Anaranjado.
Codigos:P0121 ,C0242, P0641