Because you have a remote starter, it'* most likely that the problem lies within the bypass relay and/or wiring. Since the wires are so small, it'* sometimes difficult to make a good connection. Most installation shops will have a lifetime warranty on the labor so I'd suggest taking it back to where it was originally installed. If you are not the original purchaser of the starter or vehicle, it usually will not qualify for the lifetime warranty. In that case, you'll need to dig into it yourself.
To begin, lower the driver'* hush panel (and perhaps the panel below the steering column) and inspect the wiring. The VATS wires are 2 very small white wires contained in an orange covering. There'* probably a couple of butt connectors and you may see a disconnected wire. Most installers use the red butt connectors which are too large for the gauge wires. I use tiny yellow ones found at Radio Shack. I believe the card says that they are for telephone wire. The other problem is that the resistor(*) can be outside the +/- 5% tollerance that the VATS module has. In this case, you'll have to replace the resistor to get closer to the value in the key