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2004 gmc envoy_sle
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2 Posts
Discussion Starter #1
Getting ready to replace my factory head unit and add Sat Radio...

I've heard that the keyless entry remotes are received by the external am/fm radio antenna, and processed by the factory head unit before being passed on for processing. I've also heard that sometimes install techs will hide the old factory radio inside the dash somewhere to allow it to keep performing this function. Is any of this true, how true, and can I not just replace the factory head unit with an appropriate aftermarket replacement? :undecided I'm not looking for a competition system, but I still want my unlock remotes to work at a good range.

Thanks
 

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2002 chevy trailblazer_ls
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1,433 Posts
What everyone else said (tho I find it odd that the liftgate module takes care of it instead of the BCM like my old car did). I replaced my HU with a simple USB/MP3 deck and keyless was unaffected. Just make sure to get the right harness that will retain the chimes and such.
 
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