Drive Unit - Rear - 4DU - Remove And Install: Install

Use the shackles (x3) to attach the drive unit sling tool to the new rear drive unit.

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Use the gantry to lift the rear drive unit off of the protective surface and position the rear subframe and subframe lift underneath the drive unit.

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With the help of an assistant, use the gantry to lower the rear drive unit sling tool, guide halfshafts into the rear drive unit, and lower the rear drive unit into the rear subframe.

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Lower the rear drive unit sling tool so as to install and hand tighten the bolt that attaches the rear drive unit to the rear of the rear subframe.

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Install and hand tighten the bolt that attaches the rear drive unit to the RH side of the rear subframe.

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Install and hand tighten the bolt that attaches the rear drive unit to the LH side of the rear subframe.

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Lower the drive unit sling tool to release tension in the cables, and then remove the sling tool from the rear drive unit.

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Remove the drive unit sling tool from the gantry.

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Tighten the rear drive unit mount bolts (x3).
80 N.m (59.0 ft-lbs)

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With the help of an assistant, slightly rotate the LH halfshaft so as to align the splines of the halfshaft to those in the rear drive unit, lift up on the LH rear knuckle to help move the halfshaft into the drive unit, and then apply force to seat the halfshaft in the drive unit.
NOTE: If the halfshaft binds, back the halfshaft out, rotate it slightly, and try again.

NOTE: A snap is heard when the retaining clip seats onto the fully inserted halfshaft.

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Install the LH rear toe link to the LH rear knuckle, and then install and hand-tighten the nut and bolt that attach the link to the knuckle.

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Install the LH rear upper fore link to the LH rear knuckle, and then install and hand-tighten the nut and bolt that attach the link to the knuckle.

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Install the LH rear upper aft link to the LH rear knuckle, and then install and hand-tighten the nut and bolt that attach the link to the knuckle.

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Fasten the grommet that attaches the LH rear wheel speed sensor harness to LH rear knuckle.

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Install the LH rear wheel speed sensor to LH rear knuckle, and then install the bolt that attaches the sensor to knuckle.
5 N.m (3.7 ft-lbs)

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Repeat step 10 through step 15 on the RH side of the rear subframe assembly.
Connect the rear subframe harness to the resolver connector, push the red tab to secure, and then fasten the clips (x2) that attach the subframe harness to the rear drive unit.

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Connect the rear subframe harness to the oil pump connector, and then push the red tab to secure.

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Manuever the rear drive unit inverter outlet to heat exchanger hose in between the rear drive unit and rear subframe, and then fasten the clips (x2) that attach the hose to the drive unit.

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Connect the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.

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Connect the rear drive unit inverter to heat exchanger hose to the rear drive unit inverter outlet, fasten the clip, and then perform a Push-Pull-Push check of the fitting.

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Fasten the clips (x2) that attach the rear drive unit inverter outlet to heat exchanger hose to the rear drive unit.

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Manuever the rear drive unit coolant outlet hose in between the rear drive unit and rear subframe, and then fasten the clips (x3) that attach the hose to drive unit.

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Connect the rear drive unit coolant outlet hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.

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Install the rear drive unit ground strap to the rear drive unit, and then install the bolt that attaches the ground strap to the drive unit.
6 N.m (4.4 ft-lbs)

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Fasten the clip that attaches the rear drive unit ground strap to the rear subframe.

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Position the rear subframe and rear drive unit assembly under the vehicle.

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Carefully raise the subframe and rear drive unit assembly until they are up against the body.
CAUTION: Do not damage hoses or harnesses while raising the subframe.

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Install and hand-tighten a new RH rear subframe bolt to attach the rear subframe to the body.

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Install and hand-tighten a new LH rear subframe bolt to attach the rear subframe to the body.

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Install the RH shear plate to the rear subframe, and then install a new large bolt to attach the RH shear plate and rear subframe to the body.

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Install and hand-tighten the small bolts (x2) that attach the RH shear plate to the HV battery.

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Install the LH shear plate to the rear subframe, and then install a new large bolt to attach the LH shear plate and rear subframe to the body.

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Install and hand-tighten the small bolts (x2) that attach the LH shear plate to the HV battery.

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Use a pry bar to shimmy the rear subframe with respect to the body, so that the subframe mounting bolts are centered in the tracings, and the witness marks align where the subframe contacts the body.

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Tighten the RH rear subframe bolt that attaches the rear subframe to the body, and then mark the bolt after tightening.
165 N.m (121.7 ft-lbs)

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Tighten the LH rear subframe bolt that attaches the rear subframe to the body, and then mark the bolt after tightening.
165 N.m (121.7 ft-lbs)

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Tighten large bolt that attaches the LH shear plate and rear subframe to the body, and then mark the bolt after tightening.
130 N.m (95.9 ft-lbs)

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Tighten large bolt that attaches the RH shear plate and rear subframe to the body, and then mark the bolt after tightening.
130 N.m (95.9 ft-lbs)

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Tighten the small bolts (x2) that attach the RH shear plate to the HV battery.
For non-Structural Pack vehicles:

35 N.m (25.8 ft-lbs)

For Structural Pack vehicles:

62 Nm (45.7 lbs-ft)

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Tighten the small bolts (x2) that attach the LH shear plate to the HV battery.
For non-Structural Pack vehicles:

35 N.m (25.8 ft-lbs)

For Structural Pack vehicles:

62 Nm (45.7 lbs-ft)

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Release the straps (x3) that attach the rear subframe to the subframe lifting tool.

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Lower the subframe lifting tool, and move it out from under the vehicle.

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Install the rear drive unit HV harness in and up between the rear subframe and the HV battery.
NOTE: Rotate the harness as it is installed to allow access for the bracket.

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Verify that the black release lever of the rear drive unit HV harness connector is in the open position, install the connector flat and square to the HV battery header, secure the release lever to the closed position, and then slide the red connector locking tab.

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Install the nut(s) that attach(es) the rear drive unit HV harness bracket to the HV battery.
10 N.m (7.4 ft-lbs)

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Verify that the black release lever of the rear drive unit HV harness connector is in the open position, install the connector flat and square to the rear drive unit inverter HV header, secure the release lever to the closed position, and then slide the connector locking tab.

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Install the bolt that attaches the rear drive unit HV harness bracket to the rear drive unit inverter.
6 N.m (4.4 ft-lbs)

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Inspect the rear subframe electrical harness logic connector and the rear drive unit inverter logic connector for coolant, and use shop air and a clean dry shop towel to remove any coolant from the connectors.
Connect the rear subframe electrical harness to the rear drive unit inverter logic connector, raise the handle upward, and fasten the locking tab.

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Fasten the clip that attaches the rear subframe electrical harness to the rear drive unit inverter.

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Position a coolant drain collector underneath the LH rear of the HV battery.

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Install the rear drive unit inverter inlet hose in and up between the rear subframe and the HV battery.

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Fasten the clip that attaches the rear drive unit inverter inlet hose to rear drive unit HV harness.

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Remove the plugs from the fittings, immediately connect the rear drive unit inverter inlet hose to the rear drive unit inverter, fasten the clip, and then perform a Push-Pull-Push check of the fitting.

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Remove the plugs from the fittings, immediately connect the rear drive unit inverter inlet hose to the HV battery, fasten the clip, and then perform a Push-Pull-Push check of the fitting.

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Position the coolant drain collector underneath the RH rear of the HV battery.

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Remove the plugs from the fittings, immediately connect the rear drive unit coolant outlet hose to the powertrain return hose, fasten the clip, and then perform a Push-Pull-Push check of the fitting.

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Return the RH rear wheel arch liner to position, and then fasten the clips (x2) that attach the liner to the RH rocker panel.

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Remove the coolant drain collector from under the vehicle.

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Install the HV battery rear skid plate. See Skid Plate - HV Battery - Rear (Remove And Replace) .
Fasten the clips (x2) that attach the coolant hoses to RH shear plate.

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Fasten the clips (x4) that attach the coolant hoses to the rear skid plate.
NOTE: Clip quantity varies with older vehicles.

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Fasten the clips (x2) that attach the coolant hoses to LH shear plate.

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Install the rear stabilizer bar to the rear subframe, and then install new bolts (x4) to attach the stabilizer bar to the subframe.
30 N.m (22.1 ft-lbs)

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Install the LH rear stabilizer bar end link into the rear stabilizer bar.
NOTE: Move the stabilizer bar up and down to ease installation of the end link.

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Install a new nut to attach the LH rear stabilizer bar end link to the rear stabilizer bar.
55 N.m (40.6 ft-lbs)

NOTE: Use a 5 mm allen wrench to prevent the ball joint stud from turning and damaging the ball joint.

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Install the RH rear stabilizer bar end link into the rear stabilizer bar.
NOTE: Move the stabilizer bar up and down to ease installation of the end link.

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Install a new nut to attach the RH rear stabilizer bar end link to the rear stabilizer bar.
55 N.m (40.6 ft-lbs)

NOTE: Use a 5 mm allen wrench to prevent the ball joint stud from turning and damaging the ball joint.

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Fasten the clip that attaches the rear subframe harness to the body on the LH side.

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Connect electrical harness to the rear subframe harness LH connector and then fasten the red locking tab.

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Fasten the clip that attaches the rear subframe harness to the body on the RH side.

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Connect electrical harness to the rear subframe harness RH connector and then fasten the red locking tab.

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Install the rear drive unit ground strap to the body, and then install the nut that attaches the ground strap to the body.
10 N.m (7.4 ft-lbs)

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Install the LH rear strut to the body at the LH top mount, and then install the bolts (x2) that attach the strut to the body.
41 N.m (30.2 ft-lbs)

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Remove the S-Hook, install the LH rear brake caliper to the LH rear knuckle, and then install new bolts (x2) to attach the caliper to the knuckle.
83 N.m (61.2 ft-lbs)

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Remove the bolt that attaches the LH rear brake rotor to the hub.

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Install the hub jack adapter onto the LH rear hub and hand-tighten the lug nuts (x5).

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Use an underhoist stand to support the hub jack adapter and simulate the LH rear suspension at ride height.

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Use the rear ride height torque gauge to verify the LH rear suspension is set to ride height specification.
NOTE: It may be necessary to slightly adjust the underhoist stand or Gedore spring compressor tool.

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The distance between the bottom of the quarter panel and the center of the rear axle should be 427 mm when the rear suspension is set to ride height.
NOTE: It may be necessary to slightly adjust the underhoist stand or Gedore spring compressor tool.

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Tighten the bolt and nut that attach the LH rear upper aft link to the knuckle, and then mark the fasteners with a paint pen after tightening
134 N.m (98.8 ft-lbs)

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Tighten the bolt and nut that attach the LH rear upper fore link to the knuckle, and then mark the fasteners with a paint pen after tightening
76 N.m (56.0 ft-lbs)

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Tighten the bolt and nut that attach the LH rear toe link to the knuckle, and then mark the fasteners with a paint pen after tightening
76 N.m (56.0 ft-lbs)

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Tighten the bolt and nut that attach the LH rear lower fore link to the knuckle, and then mark the fasteners with a paint pen after tightening
76 N.m (56.0 ft-lbs)

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Remove the underhoist stand from underneath the LH rear suspension.

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Remove the lug nuts (x5) that attach the hub jack adapter, and then remove the hub jack adapter from the vehicle.

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Install the bolt that attaches the LH rear brake rotor to the hub.
5 N.m (3.7 ft-lbs)

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Remove the Gedore spring compressor from the LH rear coil spring.
NOTE: Refer to the Tooling Profile for additional information.

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Repeat step 75 through step 89 for the RH side of the vehicle.
Install the rear diffuser. See Diffuser - Rear Fascia (Remove And Replace) .
Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove And Replace) .
Install the LH and RH rear suspension covers. See Cover - Rear Suspension - LH (Remove And Replace) .
Install the LH and RH rear wheels. See Wheel (Remove And Replace) .
Perform a cooling system vacuum refill. See Cooling System (Vacuum Refill) .
Connect LV power. See 12V/LV POWER (DISCONNECT AND CONNECT) .
On the touchscreen, press and hold the Park button to disable EPB service mode, and then remove any wheel chocks.

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From the touchscreen, touch Thermal > Actions > Stop Thermal Fill Drain , and allow the routine to complete.
From the touchscreen, touch Thermal > Coolant System > Coolant Purge , touch Run , and allow the routine to complete.
Add coolant to the reservoir as necessary, and install the reservoir cap.

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From the touchscreen, touch Thermal > Actions > Test Thermal Performance , touch Run , and allow the routine to complete.
Install the HEPA duct. See Duct - Hepa (Remove And Replace) .
Install the HEPA filter assembly. See Assembly - Filter - Hepa (Remove And Replace) .
Install the rear underhood apron. See Underhood Apron - Rear (Remove And Replace) .
Disable Service Mode. See Service Mode .
Remove the vehicle from the 2 post lift. See Raise Vehicle - 2 Post Lift .
Refer to the Alignment Requirement tables to determine if an alignment check (AC) or full adjustment (FA) is necessary. See Alignment Requirement - Suspension.. See Alignment Requirement - Suspension .