Replaced factory HU. Bought the GMOS-04 (as instructed by an audio professional that had no gain in the recommendation). I've installed the GMOS-04 as per the instructions (at least I'm pretty sure I did). Installed a Pioneer DEH-73BT.
Current new issues post install:
- Static noise coming through dash tweeters
- Occasional whine concurrent with acceleration (alternator noise ?)
- Both static and whine go away if I turn the dash light dimmer all the way off
- Occasional cut-out of all speakers, unable to determine if caused by movement of GMOS-04
- Removed 16 pin harness from GMOS-04 unit yesterday, and dome light went out. Plugged 16 pin back in, dome light functions again.
- Occasionally hearing power window motor noise through dash tweeters.
Other non-HU installation issues that may/may not be causing interference/static:
- Head lights will dim down upon cessation of power window switch activation
- Rear wiper motor not functioning [(unknown if motor seized or if electrical issue, fuse checks out ok) prior to install]
- #4 setting on blower motor control not functioning 95% of time used (issue prior to install).
Have had the vehicle for about 6 years, haven't used OnStar once. I don't need the OnStar, but would like to stick with Bose amp, if at all possible.
There is no noticeable heavy drop on voltmeter in dash at any time.
Checked as many grounds as I could find throughout vehicle, cleaned ones that needed it (none were terrible), and moved my HU ground further away from battery/alternator, no change.
Dialed both potentiators of GMOS-04 up and down, no changes.
Sifted through countless Google searches and YouTube videos, nothing has helped.
Personal issues:
-Ready to pull what little hair I have left out of my head!!!
ANY help would be greatly appreciated.
Current new issues post install:
- Static noise coming through dash tweeters
- Occasional whine concurrent with acceleration (alternator noise ?)
- Both static and whine go away if I turn the dash light dimmer all the way off
- Occasional cut-out of all speakers, unable to determine if caused by movement of GMOS-04
- Removed 16 pin harness from GMOS-04 unit yesterday, and dome light went out. Plugged 16 pin back in, dome light functions again.
- Occasionally hearing power window motor noise through dash tweeters.
Other non-HU installation issues that may/may not be causing interference/static:
- Head lights will dim down upon cessation of power window switch activation
- Rear wiper motor not functioning [(unknown if motor seized or if electrical issue, fuse checks out ok) prior to install]
- #4 setting on blower motor control not functioning 95% of time used (issue prior to install).
Have had the vehicle for about 6 years, haven't used OnStar once. I don't need the OnStar, but would like to stick with Bose amp, if at all possible.
There is no noticeable heavy drop on voltmeter in dash at any time.
Checked as many grounds as I could find throughout vehicle, cleaned ones that needed it (none were terrible), and moved my HU ground further away from battery/alternator, no change.
Dialed both potentiators of GMOS-04 up and down, no changes.
Sifted through countless Google searches and YouTube videos, nothing has helped.
Personal issues:
-Ready to pull what little hair I have left out of my head!!!
ANY help would be greatly appreciated.
