2001 2.2 tranny cooling lines

[maritimesbob]

I need to replace both transmission cooling lines on my 01 2.2 Sunfire. Rust has got the better of them and the top rubber portion has been chafing on the lower and started breaking through.

I have found pre-made tranny lines on ebay for a Sunfire, but they are the the 3 speed auto. I was wondering, are the tranny cooling lines the same for the 3 and 4 speed autos?

Also the lines I have seen, the threaded fitting looks much smaller than the piece that goes into the radiator. Is there another fitting like an adapter or something that I need to buy for the radiator end? Both tranny line - radiator connections looked badly rusted and could do with replacing.

One final question. Where the heck is the transmission fluid drain/inspection plug? The only thing I can find is a small plug underneath where the two cooling lines go into the box.

Thank you.

 

[maritimesbob]

I take no one has done this before?

Anyways, decided against replacing both lines as it is only the rubber portion that has split and a small part of the steel tube corroded. I figured it less trouble cutting both damaged parts out and replacing them with transmission rated rubber hose. Is is important to flare both the steel tubes that will push inside the new rubber hose? I don`t have a flaring kit, but someone told me without the pipes being flared chances are they will pop out under pressure? I am using stainless steel hose clamps, but do I have to flare those steel pipes?

Thanks.

 

[Goatman]

you can most of the times get away with not flareing the lines but I would suggest using two clamps on both ends of the rubber line and make sure you use a fuel rated (reinforced) line..
as for your drain plug question most later model GM FWD transmissions do not have a drain plug, they are designed to be flushed with a machine type system, and have a check port that can be used to determine if fluid is needed but the car needs to be on a hoist and running to check ..(best done by a service tech)..

 

[maritimesbob]

Well, typically GM I find the two transmission lines which are supposed to be for my car, they do not fit. On the transmission end of my car, the two hoses do not screw into the transmission they go into a metal plate, so I am assuming they sit in place with o-rings or something. The two lines I was given both have threaded fittings on both ends.

Anyway, where they go into the radiator, both fittings are rusted to hell and not coming out. Rather than damage the radiator fitting or something else I am going to cut the lines near the transmission and pipe in an aftermarket cooler. The piping on the tranny end is in good shape with little if any rust.

Just one question, what size of rubber hose will I need just in case the hose with the cooler kit is not long enough? I will join everything up with hose clamps and some barbed fittings.

I started losing a lot of ATF yesterday, as a quick fix just to get me home (couple of miles) I cut out the transmission cooler for now and just looped the lines back. I go to pick up the new cooler tomorrow.

I found the drain/check plug on the transmission. It`s just above and to the left of the engine oil pan plug. Annoying as hell (and not exactly safe), chances are the ATF spews out over the hot exhaust as you have to run the motor to check the level. I made a quick funnel thingy to keep it from pouring out over the exhaust!! Yeah I have access to hoist at work.

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[kjtyo4]

I got original replacement from rock auto I think they were about 40 dollar.
They are acdelco I think.
kenny.