Just changed mine 2 days ago.
1. detach air intake duct
2. remove intake air filter housing
3. to pull up the tank you should unlock 4 locking clips (red arrows). detach the radiator hose and those 2 hoses from the coolant tank.
4. pull out extension tank by detaching from radiator at top then pull up from mounting bracket at bottom. I wasn't able to detach the tank this way (its kind of a snap on system). It might work for you. make sure you don't pull out the radiator too. It should be powerful enough to unsnap (is this the right word?) the tank without removing unwanted parts.
If this doesn't work go to step 5
5. (if you could not remove the tank pulling it out). remove splash shield from under engine
6. unlock heat exchanger locking clip (green arrow in fig2).
7. detach the heat exchanger (you must drain the coolant first)
9. unplug the coolant level sensor
9. detach hose (blue arrow)
10. remove the tank. you will remove the tank together with the ATF heat exchanger connector (blue arrow)
the new tank comes without the ATF connector, coolant level sensor (number 5 in fig 1) and locking clip (number 4 in fig 1). you will use the ones that you have. be careful with the coolant level sensor. turn it clockwise slowly.
to mount the whole system back you will have to start with ATF heat exchanger connector. it goes on some kind of rail. then the heat exchanger and the tank. make sure you lock back all locking clips.
the heat exchanger has 2 x-rings. you might want to replace those. OEM-17101439140 at pelicanparts.com
Coolant filling:
1. turn ON the ignition (the engine should be OFF)
2. set the temp to 80 degrees
3. set blower to low
4. radiator bleed screw is loose (I have a bleeding screw on top of the radiator hose)
5. add coolant slowly
6. watch the bleed screw! when it starts to overflow stop adding coolant.
start the engine and let it run for 5-6 minutes. check the level coolant after the engine cools off. I used around a gal of coolant
enjoy! I bet you'll find other things to fix once you remove the splash shield cover. a leak here, a leak there, a cv boot.....
The
insert image feature doesn't work (have no idea why) so I will post the links
Fig1
http://www.pbase.com/renem24/image/92719198
Fig2
http://www.pbase.com/renem24/image/92719199
http://www.pbase.com/renem24/image/92719198