Special Tools
• | J 43181 Heater Line Quick Connect Release Tool |
Removal Procedure
Note: In order to remove the engine, the vehicle needs to be on a hoist. The front wheels and tires will also require removal. The vehicle will have to be supported by the frame when the tires are removed.
- Remove the engine cover. Refer to
Engine Cover Replacement.
- Remove the cooling layer. Refer to
Cooling Layer Removal.
- Remove the cooling fan. Refer to
Fan Replacement.
- Remove the drive belt. Refer to
Drive Belt Replacement.
- Disconnect the generator electrical connector.
- Remove the positive battery cable from the generator, perform the following:
• | Slide the boot down to access the terminal stud. |
• | Remove the positive cable nut. |
• | Remove the positive cable. |
- Remove the generator bolts (1).
- Remove the generator (2).
- Disconnect the right engine wiring harness connector.
- Remove the 2 right engine wiring harness bracket bolts and position aside.
- Remove the 2 wiring harness routing bolts.
- Remove the oil indicator tube bracket bolt.
- Remove the drive belt tensioner bolt and tensioner.
- Remove the bolts and the generator mounting bracket.
- If equipped, remove the auxiliary generator. Refer to
Auxiliary Generator Replacement.
- Remove the auxiliary generator bracket bolt and bracket, if equipped.
- If equipped with a dual generator system, remove the bolt from the left side idler pulley and remove the idler pulley.
- 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.
- Remove the A/C compressor.
- Remove the power steering pump and bracket bolts (1).
- Remove the power steering pump bracket (2) from the pump.
- Position the power steering pump aside and secure.
- Remove the rear power steering pump bracket bolts (1) from the bracket.
- Remove the fuel line bolt and position the fuel line aside.
- Compress the clamp and disconnect the turbocharger inlet cooling hose/pipe.
- Remove the oil fill tube bolts and the oil fill tube.
- Remove the exhaust gas recirculation (EGR) valve coolant pipe to thermostat housing bolt.
- Disconnect the coolant temperature sensor electrical connector.
- Remove the fuel pipe bracket bolt.
- Remove the 8 thermostat housing crossover bolts and the thermostat housing crossover.
- Remove the thermostat pipe. Refer to
Thermostat Bypass Pipes Replacement.
- Disconnect the intake air heater (IAH) electrical connector.
- Disconnect the engine harness electrical connector from the manifold absolute pressure (MAP) sensor.
- Disconnect the positive cable from the IAH by performing the following:
• | Reposition the positive battery cable boot. |
• | Remove the positive battery cable nut at the IAH. |
• | Remove the positive battery cable from the IAH stud. |
- Remove the engine wiring harness clip bolt (1) at the rear of the intake manifold tube.
- Remove the 2 rear intake manifold tube bolts (3).
- Remove the rear intake manifold tube nut (2).
- Remove the engine wiring harness clip from the intake manifold tube.
- Remove the engine wiring harness clip bolt (3).
- Remove the EGR cooler water pipe bracket bolt.
- Remove the intake manifold tube bolts (2) and nut (1).
- Remove the intake manifold tube with the stud.
- Remove and discard the 2 metal EGR gaskets from the EGR valve.
- Remove and discard the O-ring seal from the center intake manifold.
- Remove the air intake pipe. Refer to
Air Intake Pipe Replacement.
- Remove the right exhaust pipe. Refer to
Exhaust Pipe Replacement - Right Side.
- Remove the left exhaust pipe. Refer to
Exhaust Pipe Replacement - Left Side.
- Remove the EGR coolant hose. Refer to
Exhaust Gas Recirculation Coolant Hoses/Pipes Replacement.
- Compress the clamp and disconnect the EGR heater inlet hose/pipe from the EGR cooler tube.
- Remove the EGR cooler tube bracket bolt.
- Remove the crankcase ventilation hose/pipe. Refer to
Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
- Disconnect the EGR solenoid electrical connector.
- Remove the EGR nut (1) and bolt (2).
- Remove the EGR valve and EGR cooler tube as an assembly.
- If necessary, remove the EGR bracket bolt, nut, and EGR bracket.
- Remove the 2 bolts and the EGR cooler tube bracket.
- Disconnect the engine wiring harness electrical connector from the turbocharger vane position sensor.
- Disconnect the engine wiring harness electrical connector from the turbocharger vane control solenoid valve.
- Remove the turbocharger upper heat shield bolts.
- Remove the turbocharger upper heat shield.
Note: Use care not to damage this hose during the procedure.
- Reposition the turbocharger coolant outlet pipe clamp (1) and remove the hose from the turbocharger pipe.
- Using the
J 36857 and
J 43181 , disconnect the fuel feed and return pipes.
- Disconnect the positive battery cable from the glow plug control module.
- Remove the glow plug control module bolts.
- Remove the glow plug control module.
- Remove the glow plug control module bracket bolts (2).
- Remove the fuel line bracket bolt (1).
- Remove the glow plug control module.
- Remove the fuel line bracket bolt.
Note: Use care not to damage this hose during the procedure.
- Remove the turbocharger coolant inlet pipe bolt and remove the hose from the turbocharger.
- Remove the turbocharger oil feed pipe banjo bolt and washer. Discard the banjo bolt and washer.
- Reposition and secure the turbocharger oil fed pipe out of the way.
- Remove the turbocharger oil return pipe nuts (1) at the top of the flywheel housing.
- Remove the turbocharger bolts.
- Remove the turbocharger (with the oil return pipe).
- Remove and discard the turbocharger oil return pipe gasket at the flywheel housing.
Remove the turbocharger lower heat shield.
- Remove the turbocharger oil feed pipe, washer, and pipe.
- Disconnect the left main engine wiring harness connector and remove the bracket bolts (1).
- Remove the left glow plug nuts (2) and the routing bolts (1).
- Disconnect the fuel injector electrical connectors.
- Disconnect the intake air temperature sensor 2 and fuel rail temperature sensor electrical connector.
- Disconnect the ECT wiring harness electrical connector (1) and the oil pressure sensor electrical wiring harness electrical connector (2).
- Position the engine wiring harness over the right side of engine.
- Remove the nut, the 2 bolts and position the bracket aside.
- Remove the fuel feed/return pipe bracket bolt.
- Disconnect the fuel hoses from the fuel pipe.
- Remove the fuel line bracket bolt.
- Disconnect the fuel pump hose from the fuel pipe.
- Remove the fuel pipe.
- Remove the fuel pipe clamp bolt (2) and turbocharger coolant inlet pipe bracket bolt (3).
- Remove the 4 center intake manifold bolts (1) and 4 nuts (2).
- Remove the center intake manifold.
- Remove the fuel pump to left fuel rail pipe.
- Compress the clamp and remove the fuel pressure relief hose.
- Remove the fuel pipe bracket bolt (2), disconnect the hose (1) at the fuel pump and remove the fuel pipe/hose assembly.
- Remove the left to right fuel rail pipe.
- Remove the left fuel injector feed pipes.
- Remove the 2 bolts and the left fuel rail.
- Disconnect the fuel rail pressure (FRP) sensor electrical connector (1).
- Remove the right fuel injector feed pipes.
- Remove the 2 bolts and the right fuel rail.
- Remove the 2 bolts and the turbocharger cooling outlet pipe.
- Remove the left intake manifold nuts/bolts and remove the manifold.
- Remove the right intake manifold nuts/bolts and remove the manifold.
- Disconnect the fuel pump electrical connector.
- Remove the 4 bolts and fuel injection pump.
- Remove the transmission fill tube.
- Remove the engine oil indicator tube. Refer to
Oil Level Indicator and Tube Replacement.
- Remove the transmission. Refer to
Transmission Replacement.
- Remove the engine flywheel. Refer to
Engine Flywheel Replacement.
- Remove the upper oil pan. Refer to
Upper Oil Pan Replacement.
Note: Remove the engine flywheel housing before installing the engine on a stand.
- Remove the engine flywheel housing. Refer to
Engine Flywheel Housing Replacement.
- Remove the oil pump pickup tube. Refer to
Oil Pump Suction Pipe and Screen Assembly Removal.
- Remove the oil filter adapter and the oil cooler assembly replacement. Refer to
Oil Filter Adapter and Oil Cooler Assembly Replacement.
- Remove the left exhaust manifold. Refer to
Exhaust Manifold Replacement - Left Side.
- Remove the right exhaust manifold. Refer to
Exhaust Manifold Replacement - Right Side.
- Remove the G102, G103 and G108.
- Using
J 36857 engine lift hooks, install a suitable lifting device.
The engine will have to be angled in order to remove. Use a load positioning sling to assist in angling the engine.
- Raise the engine off the engine mounts.
- Remove the left engine mount to engine mount frame bracket bolts.
- Remove the left engine mount to engine bolts.
- Remove the left engine mount bracket to frame bolts.
- Remove the right engine mount to engine mount frame bracket bolts.
- Remove the right engine mount to engine bolts.
- Remove the right engine mount bracket to frame bolts.
- Remove the engine from the vehicle.
- Place the engine on a suitable stand.
Installation Procedure
- Remove the engine from the stand.
- Install the engine to the vehicle.
Caution: Refer to Fastener Caution in the Preface section.
- Install the right engine mount bracket to frame bolts and tighten to
65 N·m (48 lb ft).
- Install the right engine mount to engine bolts and tighten to
58 N·m (43 lb ft).
- Install the right engine mount to engine mount bracket bolts and tighten to
65 N·m (48 lb ft).
- Install the left engine mount bracket to frame bolts and tighten to
65 N·m (48 lb ft).
- Install the left engine mount to engine bolts and tighten to
58 N·m (43 lb ft).
- Install the left engine mount to engine mount bracket bolts and tighten to
65 N·m (48 lb ft).
- Lower the engine onto the engine mounts.
- Remove the lifting device and the
J 36857 engine lift hooks.
- Install the G102, G103 and G108. Tighten the ground bolts to
34 N·m (25 lb ft).
- Install the right exhaust manifold. Refer to
Exhaust Manifold Replacement - Right Side.
- Install the left exhaust manifold. Refer to
Exhaust Manifold Replacement - Left Side.
- Install the oil filter adapter and oil cooler assembly replacement. Refer to
Oil Filter Adapter and Oil Cooler Assembly Replacement.
- Install the oil pump pickup tube. Refer to
Oil Pump Suction Pipe and Screen Assembly Removal.
- Install the engine flywheel housing. Refer to
Engine Flywheel Housing Replacement.
- Install the upper oil pan. Refer to
Upper Oil Pan Replacement.
- Install the engine flywheel. Refer to
Engine Flywheel Replacement.
- Install the transmission. Refer to
Transmission Replacement.
- Install the engine oil indicator tube. Refer to
Oil Level Indicator and Tube Replacement.
- Install the transmission fill tube.
- Position the fuel injection pump and install the 4 bolts and tighten to
25 N·m (18 lb ft).
- Connect the fuel pump electrical connector.
- Apply a 2-3 mm wide by 0.5-1.5 mm high bead of GM P/N 12378521 (Canadian P/N 88901148) sealant on the right intake manifold mating surface.
- Install the right intake manifold.
- Install the intake manifold bolts/nuts.
- Tighten the right intake manifold bolts/nuts in sequence to
25 N·m (18 lb ft).
- Apply a 2-3 mm wide by 0.5-1.5 mm high bead of GM P/N 12378521 (Canadian P/N 88901148) sealant on the left intake manifold mating surface.
- Install the left intake manifold.
- Tighten the left intake manifold bolts/nuts in sequence to
25 N·m (18 lb ft).
- Position the turbocharger cooling outlet pipe and install the 2 bolts and tighten to
9 N·m (80 lb in).
- Position the right fuel rail and install the 2 bolts and tighten to
25 N·m (18 lb ft).
- Install the right fuel injector feed pipes and tighten to
41 N·m (30 lb in).
- After installing the fuel injector pipes, clean the injector pipes and apply sealant GM P/N 97720043, at the fitting to prevent moisture and debris from collecting between the line and fitting.
- Connect the fuel rail pressure (FRP) sensor electrical connector (1).
- Position the left fuel rail and install the 2 bolts and tighten to
25 N·m (18 lb ft).
- Install the left fuel injector feed pipes and tighten the fittings to
41 N·m (30 lb ft).
- After installing the fuel injector pipes, clean the injector pipes and apply sealant GM P/N 97720043, at the fitting to prevent moisture and debris from collecting between the line and fitting.
- Install the left to right fuel rail pipe and tighten the fittings to
41 N·m (30 lb ft).
- After installing the fuel pipes, clean the pipes and apply sealant GM P/N 97720043, at the fitting to prevent moisture and debris from collecting between the line and fitting.
- Position the fuel pipe/hose assembly and connect the hose (1) at the fuel pump.
- Install the fuel pipe bracket bolt (2) and tighten to
25 N·m (18 lb ft).
- Compress the clamp and install the fuel system pressure relief hose.
- Install the fuel pump to the left fuel rail pipe and tighten the fittings to
41 N·m (30 lb ft).
- After installing the fuel pipe, clean the pipe and apply sealant GM P/N 97720043, at the fitting to prevent moisture and debris from collecting between the line and fitting.
- Install NEW center intake manifold gaskets to the center intake.
- Install the center intake manifold.
Note: The center intake manifold lower nuts MUST be installed and tightened first.
- Install the center intake manifold lower 4 nuts and tighten to
10 N·m (89 lb in).
- Install the center intake manifold upper 4 nuts and tighten to
10 N·m (89 lb in).
- Install the fuel pipe clamp bolt (2) and turbocharger coolant inlet pipe bracket bolt (3) and tighten to
25 N·m (18 lb ft).
- Install the fuel pipe.
- Connect the fuel pump hose to the fuel pipe.
- Install the fuel line bracket bolt and tighten to
25 N·m (18 lb ft).
- Connect the fuel hoses to the fuel pipe.
- Install the fuel feed/return bracket bolt and tighten to
25 N·m (18 lb ft).
- Position the bracket, and install the nut and the 2 bolts.
- Position the engine wiring harness over from the right side of the engine.
- Connect the ECT wiring harness electrical connector (1) and the oil pressure sensor electrical wiring harness electrical connector (2).
- Connect the intake air temperature sensor No. 2 and the fuel rail temperature sensor electrical connector.
- Connect the fuel injector electrical connectors.
- Install the left glow plug nuts (2) and the routing bolts (1). Tighten the glow plug nut to
1.7 N·m (15 lb in).
- Connect the left main engine wiring harness connector and install the bracket bolts (1).
Note: Lubricate the NEW washer with diesel fuel before installing.
- Position the oil fed pipe and a NEW washer into place.
- Install the oil feed pipe bolt and tighten to
34 N·m (25 lb ft).
- Position the turbocharger lower heat shield.
- Install a new turbocharger oil return pipe gasket at the flywheel housing.
- Install the turbocharger (with the oil return pipe).
- Install the turbocharger bolts and tighten to
108 N·m (80 lb ft).
- Install the turbocharger oil return pipe nuts (1) at the top of the flywheel housing and tighten to
21 N·m (15 lb ft).
- Install the turbocharger oil feed pipe banjo bolt and a NEW washer and tighten to
34 N·m (25 lb ft).
Note: Use care not to damage this hose during the procedure.
- Position the turbocharger coolant inlet pipe hose to the turbocharger and install the bolt with NEW washers and tighten to
25 N·m (18 lb ft).
- Install the fuel line to the bracket bolt and tighten to
25 N·m (18 lb ft).
- Position the glow plug control module bracket.
- Install the glow plug control module bracket bolts (2) and tighten to
10 N·m (89 lb in).
- Install the fuel line bracket bolt (1) and tighten to
25 N·m (18 lb ft).
- Position the glow plug control module and install the glow plug control module bolts and tighten to
10 N·m (89 lb in).
- Connect the positive battery cable to the glow plug control module.
- Connect the fuel feed and return plugs.
Note: Use care not to damage this hose during the procedure.
- Position the turbocharger coolant outlet pipe clamp (1) and install the hose to the turbocharger pipe.
- Install the turbocharger upper heat shield.
- Install the turbocharger upper heat shield bolts and tighten to
9 N·m (80 lb in).
- Connect the engine wiring harness electrical connector to the turbocharger vane control solenoid valve.
- Connect the engine wiring harness electrical connector to the turbocharger vane position sensor.
- Install the EGR cooler tube bracket and the 2 bolts and tighten to
25 N·m (18 lb ft).
- If necessary, remove the EGR bracket, nut, and the EGR bracket bolt. Tighten the EGR bracket bolt and nut to
25 N·m (18 lb ft).
- Install the EGR valve and EGR cooler tube assembly.
- Install the EGR nut (1) and bolt (2) and tighten to
50 N·m (37 lb ft).
- Connect the EGR solenoid electrical connector.
- Install the crankcase ventilation hose/pipe. Refer to
Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
- Install the EGR cooler tube bracket bolt and tighten to
25 N·m (18 lb ft).
- Compress the clamp and connect the EGR heater inlet hose/pipe to the EGR cooler tube.
- Install the EGR coolant hose. Refer to
Exhaust Gas Recirculation Coolant Hoses/Pipes Replacement.
- Install the left exhaust pipe. Refer to
Exhaust Pipe Replacement - Left Side.
- Install the right exhaust pipe. Refer to
Exhaust Pipe Replacement - Right Side.
- Install the air intake pipe. Refer to
Air Intake Pipe Replacement.
- Install a NEW O-ring seal to the center intake manifold.
- Install 2 NEW metal EGR gaskets to the EGR valve.
- Install the intake manifold tube with the stud and tighten to
25 N·m (18 lb ft).
- Install the intake manifold tube bolts (2, 4) and nut (1) and tighten to
25 N·m (18 lb ft).
- Install the EGR cooler water pipe bracket bolt (5) and tighten to
15 N·m (11 lb ft).
- Install the engine wiring harness clip to the intake manifold tube and tighten to
15 N·m (11 lb ft).
- Install the engine wiring harness clip to the intake manifold tube.
- Install the rear intake manifold tube nut (2) and tighten to
25 N·m (18 lb ft).
- Install the 2 rear intake manifold tube bolts (3) and tighten to
25 N·m (18 lb ft).
- Install the engine wiring harness clip bolt (1) at the rear of the intake manifold tube.
- Connect the positive cable to the IAH by performing the following:
106.1. | Position the positive battery cable to the IAH stud. |
106.2. | Install the positive battery cable nut to the IAH and tighten to
10 N·m (89 lb in). |
- Reposition the positive battery cable boot.
- Connect the engine harness electrical connector to the MAP sensor.
- Connect the IAH electrical connector.
- Install the thermostat bypass pipe. Refer to
Thermostat Bypass Pipes Replacement.
- Position the thermostat housing crossover with the NEW gaskets.
- Install the 8 thermostat housing crossover bolts and tighten to
25 N·m (18 lb ft).
- Connect the coolant temperature sensor electrical connector.
- Install the fuel pipe bracket bolt and tighten to
25 N·m (18 lb ft).
- Install the EGR valve coolant pipe to the thermostat housing bolt.
- Install the oil fill tube and the oil fill tube bolts and tighten to
25 N·m (18 lb ft).
- Compress the clamp and connect the turbocharger inlet cooling hose/pipe.
- Position the fuel line and install the fuel line bolt.
- Position the A/C compressor and power steering pump bracket.
- Install the A/C compressor and power steering pump bracket bolts and tighten to
46 N·m (34 lb ft).
- Position the power steering pump and loosely install the front bracket bolts.
Note: Tighten the front bracket bolts before the rear bracket bolts, to ensure pulley alignment.
- Loosely install the rear power steering pump bracket bolts.
• | Tighten the front bolts to
50 N·m (37 lb ft). |
• | Tighten the rear bolts to
50 N·m (37 lb ft). |
- Install the A/C compressor.
- Install the A/C compressor bolts and tighten to
50 N·m (37 lb ft).
- Connect the A/C cut out switch electrical connector.
- Connect the A/C compressor clutch electrical connector.
- If equipped with dual generator system, install the idler pulley and the bolt and tighten to
50 N·m (37 lb ft).
- Install the auxiliary generator bracket and bolt, if equipped and tighten to
50 N·m (37 lb ft).
- If equipped, install the auxiliary generator. Refer to
Auxiliary Generator Replacement.
- Install the generator mounting bracket and bolts and tighten to
50 N·m (37 lb ft).
- Install the drive belt tensioner and tensioner belt and tighten to
50 N·m (37 lb ft).
- Install the oil indicator tube bracket bolt and tighten to
21 N·m (15 lb ft).
- Install the 2 wiring harness routing bolts and tighten to
10 N·m (89 lb in).
- Install the 2 right engine wiring harness bracket bolts.
- Connect the right engine wiring main harness connector.
- Install the generator (2) and the generator bolts (1) and tighten to
50 N·m (37 lb ft).
- Install the positive battery cable to the generator, perform the following:
137.1. | Install the positive cable. |
137.2. | Install the positive cable nut and tighten to
9 N·m (80 lb in). |
- Position the boot to cover the terminal stud.
- Connect the generator electrical connector.
- Install the drive belt. Refer to
Drive Belt Replacement.
- Install the cooling fan. Refer to
Fan Replacement.
- Install the cooling layer. Refer to
Cooling Layer Installation.
- Run the vehicle to verify correct engine operation and inspect for engine fluid leaks.
- Install the engine cover. Refer to
Engine Cover Replacement.