Removal (Bank 1)
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Remove negative battery cables. Drain cooling system. Reposition upper radiator hose clamps. Remove upper radiator hose. Remove bolt holding positive battery cable junction block and move out of way. Remove the turbo charged air outlet hose.
- Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting. Remove glow plug relay connectors and remove bracket. See Fig 1Disconnect 24-pin and 40-pin engine connectors. Remove the engine connector bracket and set aside.
- Remove fuel pressure line, return line and "L" bracket. Remove Positive Crankcase Ventilation (PCV) line and set aside. Remove water pipe outlet at thermostat housing.
- Remove drive belt by installing a 3/8 inch breaker bar into the tensioner opening and rotate the tensioner counterclockwise. See Figure. Remove the drive belt from the drive pulleys. Slowly release the tension on the tensioner arm. Disconnect the Air Conditioning (A/C) compressor clutch electrical connector. Disconnect the A/C cut out switch electrical connector. Remove the A/C compressor bolts. Move the A/C compressor with the hoses attached to the right side of the engine compartment.
- Remove line from junction block to injector pump. See Figure. Loosen and remove high pressure line at back end of fuel rail. Remove junction block nuts. Remove junction block. Loosen lines at injectors first and then loosen lines at fuel rail. See Figure. Remove the fuel injector pipes. Remove 3 fuel rail bolts and remove fuel rail from vehicle. See Figure.