Question about 1999 Chevrolet Express

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Do you have to drain the oil & trany when removing the radiator & do you need special tools for removing the oil & trany lines that are connected to the radiator?

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You won't need to drain the engine oil. you will need to drain the radiator completely of fluid or else it will get in your eyes during removal. you will also need a line wrench to remove those transmission lines or else you're taking a chance of stripping those transmission lines. after you get one removed, i usually use a shop rag to tie the line up and away from radiator, gravity keeps most of the fluid from running out. or you can drain the transmission fluid,but there will be the fluid left in the transmission lines to deal with.if the fan gets in the way, remove it to keep it from damaging it during installation of the new radiator. hope this helps and thank you for choosing fixya.com

Posted on Dec 28, 2010

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You don't need to drain anything except the radiator coolant. (easy to just remove the lower hose)
If you have plastic quick disconnects on the transmission lines you can get an inexpensive release tool at most parts houses. If you have metal lines with fittings, use a flair nut wrench to remove them.
You may loose a small amount of trans fluid so after doing the repair, always check the trans level.

Posted on Dec 28, 2010

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No you dont need to drain these units ,but i cannot comment on the pipe connections as i have never done one ,but on a jeep and a astro van i have done they had plastic connections that break if your not carefull ,sorry iam vague but iam in europe and dont work on many american cars

Posted on Dec 28, 2010

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Section 03-03: Engine Cooling 1997 Taurus, Sable Workshop Manual
REMOVAL AND INSTALLATION Radiator Aluminum Core, Crossflow
SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Fuel Line Disconnect Tool Set T90T-9550-S
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svh~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not mix Standard (green) Coolant with Extended Life Coolant (orange). If mixing occurs, drain engine cooling system and refill with originally equipped coolant type. If this contamination occurs, the service interval of Extended Life Coolant will be reduced from 6 years/150,000 miles to 3 years/30,000 miles.
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