My friend had a '98 3500 V-10 with a 5-speed transmission and had a malfunction. He had traveled out of town for the weekend and on Saturday morning, when he started it up, it took off in granny gear. He panicked and instead of shutting the switch off, he mashed the brake as hard as he could and did get it shut down. Then, he couldn't get it out of gear. He worked on getting it in neutral, clutching it and trying to move the shifter until it came out of gear. When he got it in neutral, he started it again and cautiously shifted it into gear with no problems, released the clutch and engaged it and everything was normal. When he made it back to Odessa, he had me pick him up at the dealer, letting them check it out. I told him that somehow the hydraulic clutch lost its prime and he had pumped it enough to get the air out, or back in prime and nothing was wrong with his transmission. Well, the dealer called him, after two days in the shop and told him he needed a rebuilt transmission installed to the tune of $6000! He had me take him back up there and he told them they were crazy, that he had driven it all weekend long and then back to Odessa with no gear grinding or anything suggesting a bad transmission. They charged him $95 for a "diagnostic fee". He drove it 3 or 4 more years with no recurring clutch problems.