Crankshaft and camshaft sensor failure after replacement?

I have been having on going issues with my 2000 Intrigue not starting as well as crankshaft and camshaft sensors failing after a short amount of time. I have replaced both sensors many times, each time getting about 2000 miles until the codes are thrown again saying that they are bad. So recently the SES light comes on and I find the same codes for crankshaft sensor A and B circuit voltage low as well as the camshaft sensor voltage low. So I replace the sensors, and clear the codes. Within 5 miles, the SES light comes back on. I scan the codes, and they are the same ones. Clear them again and within 5 miles, same thing. Whats going on? Do I need to take it to the dealer for the learn procedure, or is something else causing this? I have had stating issues that haven't been fixed with new ignition switches and are not related to the passlock system. Any ideas?

I think it's time for you to take a trip to your local bone yard and buy the ECU they sell for around $40 and they just plug-in. If that doesn't do it then it's time for the GM dealer

yes it does not sound like the sensors are the problem....either the ECM or bad wiring up to the sensors...but then again its a 'low voltage' code not a 'short to ground' code so wiring fault seems less likely

So is throwing in a new ECU the best fix for this? Am I going to have to worry about any other issues if I do that?