Transmission Cooler Line Popped Out

[bowtiegurl]

I replaced the radiator in my 2007 Yukon SLT with a Spectra Premium CU2423.
I drove about a mile and back when I noticed a little smoke from under the hood. Opened the hood to find transmission fluid all over the engine. The top transmission cooler line had popped out. I'm sure I had seated it fully because I heard the click as it seated behind the C clip.I bought a new fitting reseated the line, filled back up with 7-8 qrts of fluid, let it idle watching the cooler line. The line held but when putting into any gear it does not go. Just revs up. All the stories I've read of this happening to other people their transmission's are fine after putting fluid back in. Is there something else I need to do or check? Can't afford to take it to a shop to have it looked at.I let it idle with fluid filled for 25-30 minutes and the transmission got up to 207•. With my old factory radiator it stayed around 178•. Also I squeezed the top radiator hose and I could squeeze all the way to the middle. The hose was warm but not hot. Any ideas?

 

[swathdiver]

With the engine running and your foot on the brake, shift the truck into each gear and leave it there for thirty seconds. So put her into reverse, then neutral, then drive, then low and then go back up the list.

Fluid won't be hot enough yet but check the fluid level on the cold mark. Too much or too little fluid and she won't run right either.

 

[Doubeleive]

I replaced the radiator in my 2007 Yukon SLT with a Spectra Premium CU2423.
I drove about a mile and back when I noticed a little smoke from under the hood. Opened the hood to find transmission fluid all over the engine. The top transmission cooler line had popped out. I'm sure I had seated it fully because I heard the click as it seated behind the C clip.I bought a new fitting reseated the line, filled back up with 7-8 qrts of fluid, let it idle watching the cooler line. The line held but when putting into any gear it does not go. Just revs up. All the stories I've read of this happening to other people their transmission's are fine after putting fluid back in. Is there something else I need to do or check? Can't afford to take it to a shop to have it looked at.I let it idle with fluid filled for 25-30 minutes and the transmission got up to 207•. With my old factory radiator it stayed around 178•. Also I squeezed the top radiator hose and I could squeeze all the way to the middle. The hose was warm but not hot. Any ideas?

I will start by saying it's physically impossible for the transmission line to have just popped out on it's own IF it was previously inserted properly.
that being said it's likely if you drove it around with no fluid long enough you could have damaged the transmission bad enough that it's internally fried but really hard to say.
how far did you drive it after replacing the radiator? how many miles? if it was more than 5-10 miles you could have cooked it.
there is really no reason for it to get up to 207 just idling unless the fluid is still low or not flowing, blockage, etc.

 

[OR VietVet]

Maybe @NickTransmissions can chime in.

Are you absolutely sure it is full when warm and idling in Park or Neutral?