I got a 2000 4x4 xlt off road this summer. Now the cold is here and I want to install command start. I`ve heard it will viod my warranty on certain aspects of my truck. The dealer has no definite comment, (not reccomended). Has anyone heard or done otherwise? Because if its allowed I`m on my way to get it. Who could tell me for sure? I already have keyless entry.. if thats an issue?? anyone??