I have a 2004 Chevy Cavalier. A couple of months ago, just after starting the car one day, the 'check engine' and 'trac off' lights both came on. I immediately shut off the car, waited approximately 5 minutes, and then restarted the vehicle. The lights were no longer on, and so I continued home. About 1 month later, the exact same thing happened when I was leaving a friends house to drive home. I tried shutting the engine off for several minutes, but this time it didn't help the problem. I ended up driving the car home, but it never seemed to shift out of first gear, and if I took it over 35 or 40 mph, the rpm's reached nearly 4500 to 5000. I found later that it was due to the ERLS 10 amp fuse being blown. I disconnected the battery to reset the computer, and replaced the fuse. I reconnected the battery, started the car, and the car ran normal again, but only for about a month. The fuse just blew again today, while driving my daughter to school. I disconnected the battery again, replaced the fuse, reconnected the battery and started it back up. The fuse blew again about 1 mile down the road. I stopped and bought a 5 pack of 15 amp fuses, along with a pack of fuses containing 2, 5, 7.5, 10, 15, 20, 25, and 30 amp fuses. I reset computer, and replaced fuse with a 15 amp to start. It lasted about 1 more mile down the road. I repeated this with a 20 amp fuse. This time, I was able to get my daughter to school, and about halfway back home again (20 miles approx.) before the 20 amp fuse blew. I reset computer again, and replaced with 25 amp fuse. This one lasted about 1/2 mile and blew. I replaced the blown 25 amp fuse with the highest rated fuse that I had left, the 30 amp fuse. Again, reset the computer and fired it up. The 30 amp fuse lasted about 2 to 2 1/2 miles, and then it too blew. I ended up driving the last 10 miles or so home, in first gear. I never took the car over 40 mph and the temperature guage never went above half way (approx 195 degrees). When I got home, I parked the car, and shut off the enginel. I removed the keys and exited the vehicle. I heard a noise under the hood, popped the hood, and found that the cooling fan was still running, without the keys even in the car. It ran for about another 5 minutes, before I feared that the battery would die on me (it is a new battery), and I proceeded to disconnect the battery again to finally shut down the fan. Has anyone run across this problem, or anything similar? Any input would be more than greatly appreciated.