Wife has 2005 Tahoe. Upper (on radiator) tranny cooler line is leaking where it crimps and goes from rubber to hard line. Already have new line. Does grill have to come out in order to connect line into cooler? I removed plastic cover from above radiator to get better look. Seems I could do it with just that removed and reaching into void but I'm also concerned about spring from fitting shooting off and not being able to find it. Any thoughts on this project?