So lost pleaese help!?!??! (Wiring Harness)

[DJSlowfets]

Hi guys so i'm 16 finally got EVERYTHING for my system I have been looking forward to it since day one I was more excited when I got all my equipment then when I received my car which I paid for my system and my car so don't think im a spoiled brat! I worked as a welder this summer and I only made about 2000 anyway it goes by quick when I paid more than $500 dolllars to put this system together... anyway I have a 2002 Chevrolet Malibu and I CANNOT find a wiring harness for it that says it is compatible with my car??? it so frustrating the things not a Rolls Royce whats the deal the one I can find says it will work but then it says it wont work with the car if the car has a factory amplifier which I know when they do that its in the trunk behind the back wheel on the drivers side behind the carpeting BUT its parked at my moms and im at my dads this week divorces **** so I cant check to see if I have a an oem amplifier. and plates and tags are not switched over yet so it has to stay there till then.. please can someone explain to me what needs to be done for my car help me find a wiring harness hopefully a fellow Malibu owner knows something that will help ANYONE please anything just help we all love bass and I want to feel it so bad.. anyway my radio is a Pioneer DEH-X5500HD.

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[keep_hope_alive Premium Member]

you need a GMOS-1 to install an aftermarket head unit.

http://www.metraonline.com/files/products/INSTGMOS-01_web.pdf

 

[keep_hope_alive Premium Member]

the newer GMOS-4 should also work

Metra VT-GMOS-04 Factory Integration Adapter Install a new car stereo and retain OnStar®, the audible safety warnings and chimes, and the Bose® audio system in select GM vehicles at Crutchfield.com

and yes, it is $100. welcome to GM's Data Bus

 

[DJSlowfets]

Thanks this is bull i dont even have onstar i dont believe! So irritating is there any other way?

 

[wtm]

Get a GM wiring harness for like 5$ on Amazon or you could get one at a car parts store and a person there would be able to tell you if it fits your car because most places online won't specify every model and year car that it fits because there are so many GM vehicles. Also you'll need butt connectors and wire crimpers/strippers if you are doing the installing yourself.

 

[keep_hope_alive Premium Member]

GM puts other things inside the radio that will be lost of you don't get the GMOS adapter. MANY GM vehicles since 2002 have needed one of these adapters and yes they are expensive.

What is Class 2 databus ?
The Class 2 system is a Serial Data Link used by GM in its vehicles, and is based on the SAE J1850 protocol, which is widely used in the U.S. It is through this data link that the body control module (or BCM) receives information and commands that are essential in determining its mode of operation.The BCM is connected, through Class 2 wiring, to the instrument panel cluster (IPC), the powertrain control module (PCM), the data link connector (DLC) and the radio.

GM has included the driver’s door module, passenger’s door module, rear seat audio controller, vehicle communication interface module or OnStar®, steering wheel audio controls, rear seat entertainment (RSE), CD changer, radio, DVD/Video, amplifier and XM radio as part of Class II. Since these new modules are part of the audio system and security system, you are now hearing more about Class II.

Connected to this same data wire is the Body Control Module (BCM), Powertrain Control Module (PCM), Transfer Case Shift Control Module, Heater & A/C controls (HVAC), Inflatable Restraint Sensing and Diagnostic Module, Theft Deterrent Control Module, Memory Seat Module, Drivers Information Center (DIC), Key/Lights/Seatbelt Chimes (most vehicles), Instrument Panel Cluster (IPC), Suspension Control Module, Electronic Brake Control Module (EBCM) and other modules.

there is no ignition wire behind the radio. one of the primary benefits of the GMOS adapter is generating an ignition turn-on wire. if you get a $5 harness the radio won't work and you will lose all of the features built-in. i have been answering that question for a decade. i'm not talking about onstar, i'm talking about other features. most notably, you lose all chimes. you can also lose the following:

Displays current settingsOil life monitor reset

Tire inflation monitor reset

Delayed headlamp illumination

Automatic door lock and unlock

Remote visual/audible verification of remote lock/unlock

Enable/Disable content theft

Enable/Disable trunk lock shock sensor

Short or long horn with remote lock/unlock

Key fob transmitter programming

The radio is used as a control panel to communicate with the vehicles computer for the customization of certain “convenience features”. All features work and remain at current settings with the factory radio removed, but can only be customized and/or reset by an authorized service center. More important than the above features and chime, there is no switched 12vlt. power supplied in the radios plug, so it will need to be sourced somewhere else such as the factory fuse panel. A 10A to 30A fused accessory power source is recommended. Depending on the vehicle there are several choices in the factory fuse panel, such as the sunroof or windshield wipers.

the loss of chimes when bypassing the GMOS can result in lawsuit if someone in the car doesn't wear a seatbelt, doesn't hear the chimes, and gets injured in an accident. at a minimum, your insurance company has an "out" for coverage since you knowingly bypassed a safety feature (similar to removing airbags).

if you are looking for an answer, you have it. you need the GMOS adapter that is listed for your car.

if you want to bypass a factory safety feature of your car, you are on your own.