problems with gmos 100 wiring harness?
Posted 01 December 2010 - 11:59 AM
I thought it was the Avic that was the problem. Turns out its not because I installed another Avic Z2 I had in my VW that worked perfect and it is doing the same thing.
It calculates perfect except when you come to a stop, if I move one foot ahead it almost jumps across the intersection and then tries to find a new route.
I am thinking it has something to do with gmos 100 harness vss ..
Posted 21 December 2010 - 01:42 AM
Posted 08 April 2012 - 08:25 PM
Posted 09 April 2012 - 11:21 PM
You try conecting directly to the VSS signal on the vehicle side?
I'm about to put a Z140BH in my Corvette with a GMOS-100 harness. I hope it doesn't have any issues (not that I use Nav a lot).
Posted 11 April 2012 - 08:17 PM
1. Factory XM module always starts on channel 1 and bleeds into all speakers. i have to change the xm channel to 0 so that i can listen to the z140bh. the steering wheel controls change both the radio station and factory XM station at the same time. This all highly annoying.
2. my gps thinks i'm 2 blocks ahead of where my car is. antenna is installed on the dash on top of the provided sticky metal piece. i may have to move its position around to other metal inside the dash to make it work.
Posted 11 April 2012 - 11:52 PM
Also does dead reconing work (this is when you have no sat and the car uses the VSS to determine forward progress)?
My Z110BT in my GTO isn't 100% accurate but it's usually not more than 20-30 feet off.
Posted 12 April 2012 - 10:17 PM
how do i know if the vss is working or not when i have no sat? would i simply not move on the screen?
Are you experiencing the issues with the factory XM module with the gmos-100? any way to fix this or separate so that the audio only comes in via one of the aux inputs?
Posted 14 April 2012 - 02:30 AM
I'm still a few blocks off on my route and sometimes in the water when near the shore. I believe it is the position of the antenna and i will try a few diff spots before sending it back.
A new issue with the gmos-100 is that I've now noticed that the illumination connection is not working. The HU does not dim down when the lights are on, and the sky in the gps background is always daytime...
Still having the issue with factory XM bleeding into the speakers all of the time.
Posted 14 April 2012 - 11:42 AM
Also you can select if the unit automatically switches between day and night settings (page 169)
re the gps antenna, on some cars the windscreen is coated with a thin metallic layer for heat resistance, this would block the gps signals....
As a test you could temporarily mount the antenna outside...
Posted 17 April 2012 - 02:36 PM
I know in some GM models the GMOS "makes" the VSS signal by reading the vehicle speed off the CAN communication bus. The VSS is a PWM type signal.
Also try to look up the "stock" mounting location of your GPS antenna (even if you didn't have Nav stock) that will give you hints as to where you should mount the antenna.
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