SuperTexan

Pulled into the grocery store, shut off the motor, went in,came back out after about 15 minutes. Started my truck, 93 GMC V-6 auto, and I noticed the AC panel lights were out. At least something is always showing on it. I thought I blew a fuse, because I have been pushing the AC harder than normal, because its hot down here. I pull away and notice it doesn't hit 2nd gear. Im like "what the h*ll?" This is odd. So I limp it over to Advance Auto, all the way over all I can think is "$1000-$1200....oh crap...transmission...here we go." Just out of curiousity, like has happened in many other cars and trucks I have onwed, I thought I might try to re-start it to see if it "cleared" out the bug. And it did. The AC was blaring, and went through all gears just fine. Anyone have an explanation?