Camshaft Position Sensor Problems of Chevrolet Silverado 2500

This is how it started. . I have a 2004 chevy Silverado 2500 hd. As I drove down the road the doors would lock and unlock on their own, and the truck would lose rpm's and would act as if the truck shut off and restarted itself. Also the check engine light would blink with the locking and unlocking of the doors. Did this off and on a few times as we babied it home. Got it home in the driveway and it threw 2 codes camshaft position sensor high volts and low volts. So we replaced the camshaft position sensor. Truck drove fine for 4 days. However on the 5th day we attempted to drive the truck and as we were driving down the road this time the engine light came on and stayed on and doors started locking and unlocking again on their own as well as the dic read service brake system and the truck completely died in the middle of traffic, we were able to pull over into a parking lot and truck restarted long enough to get home. At this point the gm dealer wasn't sure of this problem and what causes it but stated to unplug the battery and reset the computer(after speaking to 4 different gm dealers mind you). Wow low and behold fixed the problem for about 45 minutes, as we again tried to see how far we could make it before it started acting up again. Only this time doors would lock and unlock and all kinds of weird things were going on, for example doors locking and unlocking, truck stalling and restarting, idol was ruff and noisy, service engine light came on and stayed on, and the dic read this time reduced engine power!! and at this point we were only able to go 15 miles an hour and thankfully we were on a road with no traffic and were about 2 miles from our home. Also in the mist of all of this the truck was chiming and the truck thought it didn't have any brakes at this point thankfully we were able to get the truck to come to a complete stop. We have had this truck for less than 1 yr and it only has 82,000 on it and noone seems to be able to tell us what is wrong with it.

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