Yes, all SVTs had remote trunk release factory (it came with the keyless entry system). If you have a manual for your alarm, or can find one online, look up and see if there's a way to do it from your remote. For example, if my dealer-installed keyless entry had the remote trunk, then pressing/holding the unlock button on the remote would have activated it. Perhaps it's a similar design with your remote. There is also a possibility that the factory release solenoid was never hooked up to your aftermarket alarm, and so you'd need a factory keyless-entry remote to use that feature, lol
