2004 GMC truck remote start what brand

A friend wants me to install a remote starter on his 2004 GMC four door full size truck, it has remote locks. what brand and model would be best to install. I have installed some bulldogs,a TRC ZR-25, and a commando EZ-2600. The commando was OK but the others I'm not impressed with. I would really like to install something nicer than the others that I've used. Hopefuly there is something better! If I could get some recommendations of brand/model and what else I will need for the factory anti-theft system and the remote locks and what ever else I might need. Also where can we get the recommended systems. Thanks and sorry if I'm asking a repeated question! Deadeyedeadeye

There are many Brands that could fit that question.This site proves that.You might want to consider the actual functions you want and your ability to install. I use or have used OMEGA, MICRO, DEI, AstroStart, ProStart, Audiovox, Code Alarm & SkyTech to name a few.I have also found that Personal preference usually outweighs reliability & performance with a lot of customers.You might want to check warranty on all units you research also.MO

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i will use the 561t is just add on to the factory keyless entry  is easy you need a 555l all ot them are DEI products let me know if you need instructions for the install how own your mind, control your life.

MECP certified. always use a DMM

GMDL-BP will control door locks keyless entry and factory alarm disarm/arm....all in one unit.