Removal Procedure
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
- Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (R-134a)Refrigerant Recovery and Recharging (R-1234yf) .
- Remove the radiator inlet hose. Refer to Radiator Inlet Hose Replacement (LF4) .
- Remove the radiator outlet hose. Refer to Radiator Outlet Hose Replacement (LF4) .
- Disconnect the charge air coolant hose from the supercharger water manifold. Refer to Charge Air Cooler Coolant Hose Replacement - Pump to Manifold (LF4) .
- Disconnect the charge air coolant hose - radiator to manifold from the supercharger water manifold. Refer to Charge Air Cooler Coolant Hose Replacement - Radiator to Manifold (LF4) .
- Disconnect the radiator surge tank hose from the water outlet and position aside. Refer to Radiator Surge Tank Inlet Hose Replacement (LF4) .
- Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (LF4) .
- Remove the front compartment fuse block. Refer to Front Compartment Fuse Block Housing Replacement (With Out KlL9)Front Compartment Fuse Block Housing Replacement (With KL9) .
- Remove the battery terminals (1) from the jump start post junction block.
- Disconnect the ECM connectors (2).
- Reposition the engine harness (3) on the engine.
- Disconnect the heater inlet hose from the heater core tube.
- Disconnect the heater outlet hose from the heater core tube.
- Disconnect the heater outlet to surge tank hose.
- Disconnect the fuel feed line quick connect from the fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service .
- Disconnect the evaporative emission purge solenoid hose.
- Disconnect the vacuum booster check valve (1) from the vacuum booster.
- Using mechanics wire, support the radiator assembly to the vehicle body.
- Disconnect the A/C lines from the condenser. Position the lines aside.
- Disconnect and reposition harnesses as necessary.
- Disconnect the transmission fluid cooler lines from the radiator. Refer to Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LF4 With MG9)Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LF4 With M5U) .
- Remove the front wheelhouse splash shield. Refer to Front Wheelhouse Splash Shield Replacement (Rear Wheel Drive) .
- Disconnect the A/C lines from the compressor. Position the lines aside.
- Disconnect the oil cooler inlet (2) and oil cooler outlet (3) hoses from the engine oil cooler.
- Prepare the transmission for removal. Refer to Transmission Replacement (M5U with LF4 Engine) .
- Remove the catalytic converter(s). Refer to Catalytic Converter Replacement - Left Side (LF4) , and Catalytic Converter Replacement - Right Side (LF4) .
- Secure the vehicle body to the vehicle hoist using suitable straps or binders.
- Remove the drivetrain and front suspension cradle with the powertrain attached. Refer to Drivetrain and Front Suspension Cradle Replacement (LF4) .
- Lower the powertrain onto a suitable support table.
- Secure the powertrain to the support table using straps and binders.
- With the aid of an assistant, carefully raise the body from the frame.
- Ensure when raising the body the following items are clear from the frame:
- Vacuum lines
- Steering knuckles
- Electrical wiring harnesses
- Oil cooler lines
- Separate the engine from the transmission. Refer to Transmission Replacement (M5U with LF4 Engine) .
- Disconnect electrical connectors as necessary.
NOTE:
Removing the powertrain assembly from the vehicle could cause an unstable balance condition with the vehicle body on the vehicle hoist. Securing the vehicle body to the hoist is necessary.
NOTE:
The powertrain assembly will be removed from vehicle on the drivetrain and front suspension frame. In the next step, only perform the necessary procedures required to remove the powertrain assembly.