Draining Fluids and Oil Filter Removal for Chevrolet Chevy C Cab/Chassis HD (GMT 400) 2005

1. Remove the oil pan drain plug (401).
2. Drain the engine oil.



3. Remove the oil filter (435).
4. Remove the left side engine block coolant drain hole plug (131) and the right side engine block coolant drain hole plug.
5. Drain the engine coolant.