I had just purchased a 2002 chevy venture wheelchair van it only has 64000 kms. the previous owner never had any problems with the van, I just brought the van home and it started and ran fine but now that it is home it had to be boosted to start. Once boosted it ran fine again but would not start after sitting for more than 2 hrs. i do live where it is very cold but the van is always plugged in. i just replaced the battery and am still having the same problem the van has to be boosted to start any advice before i take it in again. One other thing when i try to start the van the lights and radio and fan still come on it just will not start.