I would say No. The GM ACDelco Design of these unique "Jiffy-Tite" fittings is actually rather ingenious. It would be well nigh impossible to run an absolutely "Solid State" set of Transmission Coolant Lines from the 4L60E over to the radiator because at all times when running, the Engine and Transmission in combination move in dramatically independent directions from the Body-Mounted Radiator. That amount of flexing of those lines would soon work-harden the 3/8" Steel Tubing, eventually causing them to crystallize, crack open... and leak AT Fluid under pressure.
If you look at the fitting(s) up close before you install them, just inside of where the short end of the "Ridged" pipe fits inside, there is (1) Fat and Robust Silicone "O" Ring tucked inside of the deep inner groove. Once that Pipe "Ridge" passes the point where the Tri-Lobe Spring Clip snaps around behind the "Ridge"... The Short Pipe cannot ordinarily retract.
However, at ALL Four Short Pipe Insert locations... Those "O" Rings allow the Short Tube segments to "roam comfortably" in and out of the fitting(s) in very small increments as the Engine and 4L60E bounce around and torque from right to left on the Two Motor and Single Transmission Mounts during changes in the Power Band and Shifting... just as the Solid Mounted Radiator remains rigid to the front of the SUV-Truck Body.
Meanwhile... in spite of all those disparate movements, those Durable Silicone "O" Rings ordinarily manage to stay snugly wrapped around those Short Pipes... maintaining good seals and retaining the pressurized Transmission Fluid within.
The body of this Steel ACDelco "Jiffy-Tite" Fitting is Very Well Made. However, the Tri-Lobe Spring Clips CAN be Over-Stretched to the point of allowing the "Ridges" of the Short Pipes to pull out during vehicle operation, even when Brand New.
Also... Bad Motor mounts present ALL of these components with a Hellacious amount of vibrations; such to the extent of wearing a circumferential groove around the pipe section, just outside of the "Ridge"... eating its way into the OD of the Short Pipe. The last component subject to Failure is the Silicone "O" Ring itself. Excessive Rubbing and Friction caused by so much repeated exposure to "Gyrations and Vibrations" can of course wear them out hidden inside of these fittings.
In time... Both the Clip, the Short Pipe and the Silicone "O"Rings will break down from loose, vibrating contact. The Clips can accidentally get Over-Stretched even during Brand New Installations and will soon lose their ability to keep the Short Pipe tucked on the INSIDE of the Three Lobes of the Spring Clip(s).
The attached images show this amazing design of these 4L60E Fittings at various angles and completely dis-assembled so you can observe just how deep inside of these things the Silicone "O" Rings reside.
Take Note of the Hayden 3/8" Brass Adapter as it illustrates what that built-in retaining "Ridge" design looks like so as to keep the Pipe INSIDE the Fitting... just in front of the Tri-Lobe Springs Clip. That After-Market Brass "Ridged" Pipe can also be used for the purpose of allowing the installation of an After-Market Trans-Cooler when used with Flexible 3/8" Fuel-Proof Hosing as an alternative to Pre-Bent Steel OEM Cooler Line Pipes-Tubing: