99 chevy malibu radiator leaking transmission

There are no vacuum hose's going to the transmission on this vehicle ! This transmission is electronically controlled ! There are two lines for transmission fluid that go to the radiator for tranny cooler .

there are lines that go to your transmission to the side of the radiator maybe one of the are bad

Their is no radiator cap that goes directly into radiator. if you do plan on putting barr's leak in it just put it in the coolent tank on the passenger side that is the only way.

I'm guessing you mean transmission fluid poured out? That would certainly explain why it won't move. The most common leak point for older automatic transmission cars are the transmission cooler lines. They run from the radiator to the transmission (the cooler is built into the radiator) and they are made of steel so they are prone to rust. I would start looking there. The other leak points would be the lower pan, axle seals, and where the case bolts together. Take a look at the radiator and you should see some small steel lines bolted to the radiator. Follow them and look for heavy rust that is wet with fluid.

if you have a large leak,, its not hard to tell if its on the power side,, the return side won't be spraying the fluid all over the place like the high side does, It will pretty much just drip, as far as a diagram, any autozone , napa, or parts store can print that for you ( as well as any Chevy dealers parts dept) free. Luckily the hoses on the malibu are short so they should be easily seen
https://www.carpartsdiscount.com/auto/parts/99/chevrolet/malibu/power_steering/gates_power_steering_pressure_line_hose_assembly.html?3593=147300
thats the high side hose for your car

Make sure you don not run low on transmission fluid in your transmission. Low transmission fluid will cost you a new transmission. You have the transmission line that connects to the upper passenger side or the radiator and the lower passenger side of the radiator. Determine which line has gone bad and you can buy a rubber transmission line hose at most Auto Parts store like Parts Source. Cut off out the section with a pipe cutter that has corroded through and replace with the transmission hose. Make sure you tell them it's a transmission line hose your looking for and don't use any other hose and double clamp with a compression clamps at ether end. If it's the connection at the radiator that has gone bad, replace that end and do that same as you would to sectioning off the the corroded line and try not to have more then 3 inches of repaired section. What ever you do, do not add any stop leak, this will create problems with the shift solenoids and check valves in your valve body in the transmission causing a transmission replacement soon after adding. Good luck and keep me posted.

I would not worry about antifreeze in the transmission. The pressure in the tranny cooler will not let any coolant get in. If it was leaking you would have tranny fluid in the radiator. You may have some freeze plugs that have pushed out or a cracked block or some coolant passage above the transmission. Get it pressure checked

You have what is called a closed cased transmission. You have to crawl underneathe to get to the tranny and remove the upper bolt close to the side of the case (more towards the bottom of the transmission). When you fill it, you fill it till it starts to drip out of that hole.

Looking for a picture for you.

A fluid leak that is pink and/or red colored is usually either power steering fluid or transmission fluid. I recommend checking both. You can check the power steering fluid when the car is off. However, the transmission fluid should be checked with the engine warm and idling in neutral. Have someone else step on the brake or use the parking brake and block the wheels while you're measuring the transmission fluid level.

Those are your transmission cooling lines. Buy them and replace them.

When you install them, take your time...don't be in a rush.