Powertrain Coolant - Drain
SPECIAL TOOLS
Drive Unit Pressure Test Fixture (1053600-00-C)
Kit, Coolant Leak Test Adapters, Model 3
(1132185-00-B)
Kit, Coolant Drain & Fill Adapters, M3
(1133843-00-A)
Kit, Svc Plug, Cooling Hose, Model 3
(1135762-00-A)
Kit, Battery Coolant Drain and Fill
(GSN-TL-000564)
Drain
- Disconnect 12V power. See 12V Power (Disconnect and
Connect).
- Remove the front HV battery skid plate. See Skid
Plate - HV Battery - Front (Remove and Replace).
- Remove the lower clips (x3) that attach the lower
rear edge of the RH wheel arch liner to the body, to
allow access to the coolant hose.
- Position a coolant drain under the front RH corner
of the HV battery.
- Disconnect the rear powertrain supply hose at the RH
side of the vehicle, plug the male fitting, and allow
the female fitting to drain.
- Connect the coolant pressure test adapter to the
female fitting.
- Connect the drive unit pressure test fixture to the
coolant pressure test adapter.
- Close both valves P1 (inlet) and P2 (outlet) on the
test fixture, and connect a compressed air supply line.
- Fully close the regulator, and then open P1 (inlet
valve).
- Set the pressure regulator of the test fixture to 26 psi.
- Disconnect the powertrain return hose at the RH side
of the vehicle, plug the female fitting, and allow the
male fitting to drain.
- Connect the coolant drain adapter to the male
connector, and direct the tube to the coolant drain.
- Slowly open P2 (outlet valve) to speed the drain.
- Wait at least 5 minutes for the coolant to fully
drain.
- Close P2 (outlet valve) when no more coolant is
expelled.
- Disconnect the air supply from the test fixture.
- Remove the coolant pressure test adapter and coolant
drain adapter from the hoses
- Perform the service procedures that required the powertrain coolant to be drained.
- After the components have been replaced, refill the
coolant. See Refill.