Plug & Play Remote Start Keyless Entry for Sierra & Silverado 2003-2007 Classic - This Kit Offers The Easiest Installation Available On The Market! REMOTE START PACKAGE OVERVIEW - This is the easiest kit you will ever install! This is a complete remote starter kit for GM trucks. The kit includes a Crimestopper RS3 remote starter, bypass module, and all parts required for installation. Compatible with automatic transmission vehicles only. Custom T-harness= NO wire splicing. Requires only 1 connection to ground. REMOTE START FEATURES - The CrimeStopper RS3 is a remote start with keyless entry system. This system features Lock, Unlock, Start, Stop and multi-vehicle operations with up to 1500 ft. of range. This is the prefect remote start and keyless system for trucks, cars, vans and SUV's. Start your engine and warm or cool your vehicle from the comfort of your home. FEATURE: Programmable Run Time of 12 to 48 Minutes. FEATURE: Built in timer - can start vehicle every 4 hours on cold nights. This package is a complete prewired 3-Button remote start and keyless entry kit for GMC Sierra & Chevrolet Silverado 2003-2007 Classic Body Style. The kit features the Crimestopper RS3 remote start, INTSL DATA & Keyless Bypass Module, and custom T-harnesses (pre-wired) so the kit only requires you to make 1 ground connection, the rest is plug and play. Includes detailed instruction sheet to assist with the AVAILABLE OPTION (at additional cost) - Smartphone Interface in YOUR vehicle. PLUG & PLAY INSTALLATION TYPE - This kit is a true Plug & Play kit. The wiring T-Harness was designed to eliminate the need for the wiring connections that typical systems require. The installation of this product will still require the removal of your steering column cover to access the connection points. However the connections are simple plugins. MPC TECHNICAL SUPPORT - A link will be provided to download MPC's exclusive copyrighted step-by-step installation tip sheet made by MPC's professional technicians to help you through the installation process. In addition, your purchase includes technical support. Support tickets can be submitted 24/7 and are answered in the order received, Monday through Friday between 9am to 5pm Arizona time.