2010 Siverado W/ Nav Just Installed

[planenut]

Hi All

I have a 2010 silverado Ltz w/ bose and just installed a factory Nav unit UUL (Rpo code)the unit shows /maybe stuck but shows east.The map screen works but works off the truck as if it was always going east.Any Ideas I do have to install the VSS/voice wire but that I think won't mess up the map direction .All other functions do work ecept the back up,that comes through the mirror

 

Any help would be great

Thanks

Jon

[mjg62]

The way I understand it you have to connect the VSS inorder for the mapping/tracking to work right. Where did you get the unit from?

[planenut]

The dealership that the truck came from,they only got the head unit and the gps ant.That is all I needed !!!! they said,I am there first go at the upgade for a nav unit .I guess they are wrong,because the radio set a code for the incomplete vss signal.So does that mean that the vss circuit is sending more than just speed data across the circiut.

 

Thanks

jon

[5829BMG]

Dont know about that, but search is your friend here there are many post here on this topic from a lot of different folks that have done a tremendous amount of trial and error work to get their systems working correctly.

[2010SSRS]

The dealership that the truck came from,they only got the head unit and the gps ant.That is all I needed !!!! they said,I am there first go at the upgade for a nav unit .I guess they are wrong,because the radio set a code for the incomplete vss signal.So does that mean that the vss circuit is sending more than just speed data across the circiut.

 

Thanks

jon

 

 

i did this upgrade with me Denali........ur NAV is worthless without the VSS harness. do urself a favor and plug it into the unit, then take it to the dealer and have THEM tap the VSS wire. it's a pain in the ass and if it's not perfect you'll have glitching!

[planenut]

thanks ,that is what I am going to do.What I found out is that the vvs wiring ties the nav unit to the Gm LAN system of communication

jon