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This is a pretty big job (6.7hrs warranty) transmission has to be removed
Exhaust Manifold Front Pipe Replacement (RPO LD8)
Caution: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
Caution: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.
Important: The EGR valve inlet pipe incorporates a crush seal connection at the water pump housing. The EGR valve inlet pipe must be replaced if disconnected from the water pump housing.
Oil Pan Replacement
Engine Front Cover Installation Guide Pins
Tighten Tighten the sensor to 20 N·m (15 lb ft).