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04 trailblazer, do i need special modules if i


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7808 
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Posted: October 26, 2015 at 1:53 AM / IP Logged Link to Post Post Reply Quote 7808
do i need these special $80 modules to install a headunit in a 04 trailblazer if i dont care about chimes and onstar? my new winter beater has onstar, steering wheel controls, no bose so i dont think it has an amp. websites show i need special boxes to install a headunit. is there a way around this? i seen one utube video of a guy bypass it but he was kinda hilbilly and hard to understand if he knew what he was doing. seemed like he just needed to come up with his own power/switched power.
Velocity Motors 
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Posted: October 26, 2015 at 10:59 AM / IP Logged Link to Post Post Reply Quote Velocity Motors
RED wire from aftermarket radio goes to PINK switched wire at the ignition switch. ** This will defeat all safety chimes, lights and reminders and in some provinces and states this action does not allow for a vehicle safety pass **
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
7808 
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Posted: October 26, 2015 at 11:13 AM / IP Logged Link to Post Post Reply Quote 7808
Cool thanks. So i should be able to just go buy a harness for a non onstar 2004 gm? What chimes do i loose, like seat belt, parking brake on etc.. ?
Velocity Motors 
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Posted: October 26, 2015 at 11:56 AM / IP Logged Link to Post Post Reply Quote Velocity Motors
Any chimes that would normally go through the stereo : seat belt, lights on reminder & low fuel .
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
i am an idiot 
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Posted: October 26, 2015 at 4:48 PM / IP Logged Link to Post Post Reply Quote i am an idiot
Does it have a Bose system?
Velocity Motors 
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Posted: October 27, 2015 at 3:39 PM / IP Logged Link to Post Post Reply Quote Velocity Motors
he said..." no bose so i dont think it has an amp"
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
dasbogie 
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Posted: October 28, 2015 at 7:49 AM / IP Logged Link to Post Post Reply Quote dasbogie
trailblazers do not have any visible labels if they are bose. If you know the trim codes for the sticker in the glove box you can tell that way. I believe there is a sticker on the outside of the speaker mount behind the door panel. Also one could try popping the speakers from the radio harness.
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i am an idiot 
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Posted: October 28, 2015 at 10:31 PM / IP Logged Link to Post Post Reply Quote i am an idiot
The Bose units I have seen are labeled on the front door speaker grills. The ones that are labeled require a 150 dollar harness.
7808 
Member - Posts: 41
Member spacespace
Joined: November 04, 2007
Posted: October 30, 2015 at 12:51 AM / IP Logged Link to Post Post Reply Quote 7808
no bose.

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