I actually got a Bulldog remote starter for the Avalanche. I picked that model because it worked with the factory keyless. Press lock on the key fob three times, and the remote starter starts the truck. I already carry one fob for the AV, and one for the 'burb. Didn't want to carry a third one just to remote start.I've had good luck with 2 cars so far "Bulldog Security REMOTE STARTER"
check availibility of this one? So many on the market now