04 trailblazer, do i need special modules if i

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7808

Member - Posts: 41

Joined: November 04, 2007

Posted: October 26, 2015 at 1:53 AM / IP Logged

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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Joined: March 08, 2002

Location: Manitoba, Canada

Posted: October 26, 2015 at 10:59 AM / IP Logged

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

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7808

Member - Posts: 41

Joined: November 04, 2007

Posted: October 26, 2015 at 11:13 AM / IP Logged

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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Location: Manitoba, Canada

Posted: October 26, 2015 at 11:56 AM / IP Logged

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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Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 26, 2015 at 4:48 PM / IP Logged

Does it have a Bose system?

Velocity Motors

Moderator - Posts: 12,488

Joined: March 08, 2002

Location: Manitoba, Canada

Posted: October 27, 2015 at 3:39 PM / IP Logged

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

Silver - Posts: 514

Joined: September 30, 2006

Location: Pennsylvania, United States

Posted: October 28, 2015 at 7:49 AM / IP Logged

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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Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 28, 2015 at 10:31 PM / IP Logged

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

Joined: November 04, 2007

Posted: October 30, 2015 at 12:51 AM / IP Logged

no bose.

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