The turbocharger pickup models use a DualBoost turbocharger. This turbocharger has one exhaust turbine, two intake compressors and incorporates a wastegate. The exhaust turbine has variable vanes that change with engine oil pressure from a PCM-controlled solenoid.
The air intake system includes a MAF and IAT sensors integrated into one unit. The MAF/IAT sensor is located in the air inlet tube after the air filter.
The air filter is located on the passenger side of the engine compartment in front of the battery. The air filter housing includes a non-electrical filter minder to measure inlet restriction. When the filter element becomes contaminated beyond useful limits, the filter minder visually indicates the need for replacement.
Intake Side Air is drawn through the air filter then past the Mass Air Flow (MAF) and Intake Air Temperature (IAT) sensors. The MAF sensor measures the mass of the air entering the engine and IAT obtains the temperature. Next, the air enters the compressor side of the turbocharger through the lower intake manifold. Theโฆ Read More »
The oil filter is a spin-on style mounted on the right side of the oil pan.
The oil cooler is mounted on the oil pan of the engine and uses engine coolant to dissipate heat from the engine oil. The coolant and oil are separated by multiple plates that create passages in the oil cooler. After oil has been cooled, it exits the oil cooler and travels through the oil panโฆ Read More »
There is an oil manifold in each cylinder head that sprays oil onto the rocker arms and valve springs for cooling and lubrication.
The 6.7L engine incorporates piston cooling jets that spray oil into a hole in the bottom of the piston to cool the top of the piston. The oil jets bolt into the bottom of the block and direct the oil into the piston.
The oil pressure regulator valve is located in the oil pump cover on the back of the front cover.
The gerotor style oil pump is mounted to the back side of the front cover. Note: The front cover must be replaced to service the oil pump.