Draining it is easy, refilling it is the problem.
First you need the correct CVT fluid and the CVT additive. These are not common fluids or universal types, generally they are dealer only items.
Fluid = Saturn DEX-CVT P/N 22688912 Additive = Saturn DEX-CVT P/N 22697447
And a new lower tube drain plug
Next you need a scan tool that can read the transmission temperature. That is because it gets filled by temperature.
The drain is located on the trans near the axle. But it is two parts, there is a plug in the middle and a tube that the plug screws into. You remove the plug first. Then remove the tube. That lets the fluid drain out. Now to refill you replace the long tube first, torque it to 20 Nm (15 ft lb). Now install the smaller drain plug finger tight.
With the vehicle flat and level, add 6 quarts of DEX-CVT fluid.
Now start the engine and hold the brake. Shift the trans into reverse for ten seconds, then into drive for another ten seconds. Now back into park. Leave the engine running. That circulates the trans fluid around the system.
Next go under the vehicle (keep it level, if you are using a jack you need to jack both ends, if ramps use them on both ends, or use a lift) and remove the small drain plug. If fluid runs out in a steady stream, let it run until it stops. If no fluid runs out, add fluid until it starts to run out.
Once the fluid stops you install the new lower tube drain plug and tighten it to 11 Nm ( 97 Inch lb)
Now you connect up the scan tool and look at the transmission fluid temperature and add fluid following this table -
If the transmission fluid temperature is 20°C (68°F) or less, add 0.47 liter (0.5 qt) of fluid to the transmission.
If the transmission fluid temperature is 40°C (104°F), add 0.71 liter (0.75 qt) of fluid to the transmission.
If the transmission fluid temperature is 60°C (140°F), add 0.95 liter (1.0 qt) of fluid to the transmission.
If the transmission fluid temperature is 80°C (176°F), add 1.2 liter (1.25 qt) of fluid to the transmission.
Now you can shut off the engine. Finally inject the entire contents of the DEX-CVT P/N 22697447 additive into the transmission.
Now after all of that there is a lower tech way that should work just as well. With a cold engine jack up the vehicle. Remove the drain parts. Drain the fluid into a container. Now measure the amount of fluid using something like a measuring cup. Get as accurate as possible, no guessing as fluid level in these is somewhat critical.
So lets say you drain it and get 7.5 liters of fluid out. Install the tube and the new drain plug. Now pour in the first six liters of fluid. Inject the additive, start the engine and shift it as above. Now pour in the remaining 1.5 liters. If you had removed 7.5 liters, and you replaced it with 7.5 liters the trans fluid should be at the correct level.
I would prefer using the scan tool but I cannot see a reason why the other method would not work just as well.
Images (Click to make bigger)
Tuesday, December 31st, 2019 AT 11:05 AM
(Merged)