I just bought a 2000 Silverado and didn't get any of the keyless entry transmitters. I checked the RPO Code and it has factory keyless entry but it doesn't have factory (AP8) remote start. I'm debating as to whether I should just buy a remote entry transmitter on eBay or go for an aftermarket remote start system with keyless entry. For the time being, the truck is parking outside and the remote start sounds good with winter getting near. Does anybody have any suggestions or warnings about certain systems?