Another Montana not starting

Three weeks ago I came out of work and my 2001 Montana wouldn't start. I had CAA come and the guy said I needed a new battery. He changed the battery and was able to get the van going. It worked for about 2 weeks then it wouldn't start again. Lights worked, radio worked, everything seemed to work but no startup. Not even the sound of it trying to start. Complete silence. There was a car/padlock light displaying as well as the low gas and open door indicators. I took it into the local GM dealership and they had it for 2 days. They said they couldn't find anything wrong but checked and cleaned all of the connections. It worked for almost two weeks and then dead again. Again the car/padlock indicators was on. Finally got it going and took it to the dealership again. They had it for 2 more days and still found nothing. They said it could be a dozen different things. I've already spent $350 on this van and nothing has really changed. Any suggestions would be appreciated.

I am not car savvy; however, I am thinking if it could the Crankshaft sensor problem? I had read it somewhere that Crankshaft sensor is notorise for this problem!

My issue on here very similar was finally resolved when I replaced the bolts on the battery terminals. $2.00 at Lordco for the pair. I would remove your bolts, slide the rubber boot off the terminal, dip terminal in baking soda water mixture for 5 or 10 minutes, then use wire brush to insure all is clean replace the bolts and see how it goes....

Mine has been 6 weeks since the last problem...

Gord
Three weeks ago I came out of work and my 2001 Montana wouldn't start. I had CAA come and the guy said I needed a new battery. He changed the battery and was able to get the van going. It worked for about 2 weeks then it wouldn't start again. Lights worked, radio worked, everything seemed to work but no startup. Not even the sound of it trying to start. Complete silence. There was a car/padlock light displaying as well as the low gas and open door indicators. I took it into the local GM dealership and they had it for 2 days. They said they couldn't find anything wrong but checked and cleaned all of the connections. It worked for almost two weeks and then dead again. Again the car/padlock indicators was on. Finally got it going and took it to the dealership again. They had it for 2 more days and still found nothing. They said it could be a dozen different things. I've already spent $350 on this van and nothing has really changed. Any suggestions would be appreciated.