No, drop the pan, locate the solenoid, unplug wiring, remove 4 bolts pull out of trans. Re-install upgraded solenoid in reverse order. You will want to do a band adjustment while you are in there also. It is very easy too. I know that you need to tightne it to 72in pounds then back it off ?? turns and tighten jamb nut so it can't change. I don't remember how many turns to back it off, but I don't have an inch pound torque wrench so Bill Kondolay walked me through mine using a 1/4" allen wrench. You will locate the band adjustment, pull down the lever, insert the 1/4" allen wrench and tighten adjustment bolt down to snug but not tight, then retighten jamb nut. Done. Replace trans filter, reinstall pan and refill with ATF+4.Is it very hard to put in?
By the way, Autozone's scanner will not read our trucks, so don't waste you time and fuel going down there. If you know someone that has a Bully Dog Triple Dog or a Smarty call them up and have them read it for you.