Hummer H2 Radio Install, Keep OnStar, Steering Wheel Controls And Door Chime

[Hellz]

ya forget about the cap.

I would recommend doing the "Big 3" (google is your friend) before even thinking of a cap.
if your current electrical cant fill the cap up fast enough, whats the point of it?

you would benefit yourself more to install a 2nd battery than a cap.

right now i am running a single 10 in a crappy underseat box (prefab). I am thinking of doing some glass work on the back console areas that cover the wheel wells and putting a SA-8 V2 in each side... just need to get the motivation to try my hand at fiberglassing. a shop quoted me $200 each side for them to do it.

i may try building a box that can hold 2 8's and that will fit under the seat as that is more idea to me... but ehh...


i forgot, but isnt there a passthrough port on the front of the OEM deck to hook a cable up to it, and to a MP3 player? connects to the headphone jack on the MP3 player.. for those that are trying to get thier phone to work, this might be a alternate method instead of doign the FM mod. atleast better SQ

[VegasMike]

Additional edit:

On the GMOS-04 there is a blue adjustment screw that the instructions say is only used for adjusting the door chime volume level.

It actually controls that, and the overall volume output of the radio audio.

To adjust the door chime level, you turn off the vehicle, put the keys in the ignition, and open the driver door. Then turn the screw to achieve the level you want.

To adjust the audio, close all doors, turn on the ignition, and radio, turn the radio up to about 3/4 full volume, and once the radio is playing adjust the level to match what you think should be 3/4 of full volume.

The GMOS I bought didn't mention this in the instructions and when I first installed everything I had to turn my radio up to 30 out of 36 max to get a normal listening level. I came across a different version of the instructions online and saw that you can also adjust the audio level. So I tore open the dash again to do the adjustment, now I listen to it at 18 out of 36 which is more inline of how the radio played in my old truck.

[guruerror]

Originally Posted by VegasMike

Additional edit:

On the GMOS-04 there is a blue adjustment screw that the instructions say is only used for adjusting the door chime volume level.

It actually controls that, and the overall volume output of the radio audio.

To adjust the door chime level, you turn off the vehicle, put the keys in the ignition, and open the driver door. Then turn the screw to achieve the level you want.

To adjust the audio, close all doors, turn on the ignition, and radio, turn the radio up to about 3/4 full volume, and once the radio is playing adjust the level to match what you think should be 3/4 of full volume.

The GMOS I bought didn't mention this in the instructions and when I first installed everything I had to turn my radio up to 30 out of 36 max to get a normal listening level. I came across a different version of the instructions online and saw that you can also adjust the audio level. So I tore open the dash again to do the adjustment, now I listen to it at 18 out of 36 which is more inline of how the radio played in my old truck.

That adjustment screw will also come in handy if you start getting a whining sound in the speakers that follows the engine revs. Lowering the output of the GMOS seems to reduce the whine. In the end you have to strike a balance between overall volume and whether or not you can still hear the whine. Those little suckers drove me crazy...

I eventually said to hell with the door chimes and just got the straight-up non-OnStar GM harness. The output was actually louder (go fig) and I never had to deal with that whine again.

[SMITH23H2SUT]

FANTASTIC THREAD!!!!!!!!! One more curveball thrown at me while trying to figure out what's going on with my stock system.........I'll go Aftermarket. Kenwood DNX9990HD.

[ricomondo]

Im curious how that Excelon 99HD wil be as well.
Please keep us posted if you do.

[mcioci]

Originally Posted by SMITH23H2SUT

FANTASTIC THREAD!!!!!!!!! One more curveball thrown at me while trying to figure out what's going on with my stock system.........I'll go Aftermarket. Kenwood DNX9990HD.

Good choice. I put that radio in my truck about 2 months ago. Awesome radio and NAV.