Lack Of Nav Voice Prompts

dragland · June 2, 2011

So, had a bit of bad news at the dealership today.

My new to me 2009 Sierra Denali turned out to not be fully loaded after all. I have been having an issue with the NAV system not providing voice prompts and I thought it was due to my GMX550 lockpick install.

Soo, I removed the Lockpick and still did not have voice prompts. No big deal, I'll just take it to the Dealer and get it fixed. Dealer called me after 2 days and informed me that the NAV unit was a dealer add on unit and was not covered under warranty and most likely will not ever work correctly.

Whoa, was I torqued! I checked the VIN info on Compnine and sure enough, no NAV.

Everything seems to work fine except that there are no voice prompts and no XM traffic option (don't really care about the XM traffic).

My question is this, does anyone have any ideas as to why everything works except the NAV voice prompts? The chimes all seem to work, the RSE integration is flawless, the XM works great as well as the Bluetooth integration. My wife has a 2009 Tahoe with factory NAV so I have the exact same system to compare it to side by side and the previously mentioned 2 items are the only issues. I REALLY want the voice prompts to work. Is it something simple like the original dealership installed the wrong VSS/VCM harness or a programming issue?

I guess when I put things in perspective, if this is the biggest issue in my life, I'm doing pretty good. However, I am a perfectionist and little things like this drive me up the wall.

Thanks for listening and hopefully someone can shed some light on the subject for me.

Donnie

louie730 · June 3, 2011

So, had a bit of bad news at the dealership today.
My new to me 2009 Sierra Denali turned out to not be fully loaded after all. I have been having an issue with the NAV system not providing voice prompts and I thought it was due to my GMX550 lockpick install.

Soo, I removed the Lockpick and still did not have voice prompts. No big deal, I'll just take it to the Dealer and get it fixed. Dealer called me after 2 days and informed me that the NAV unit was a dealer add on unit and was not covered under warranty and most likely will not ever work correctly.

Whoa, was I torqued! I checked the VIN info on Compnine and sure enough, no NAV.

Everything seems to work fine except that there are no voice prompts and no XM traffic option (don't really care about the XM traffic).

My question is this, does anyone have any ideas as to why everything works except the NAV voice prompts? The chimes all seem to work, the RSE integration is flawless, the XM works great as well as the Bluetooth integration. My wife has a 2009 Tahoe with factory NAV so I have the exact same system to compare it to side by side and the previously mentioned 2 items are the only issues. I REALLY want the voice prompts to work. Is it something simple like the original dealership installed the wrong VSS/VCM harness or a programming issue?

I guess when I put things in perspective, if this is the biggest issue in my life, I'm doing pretty good. However, I am a perfectionist and little things like this drive me up the wall.

Thanks for listening and hopefully someone can shed some light on the subject for me.

Donnie

The GM add on Navigation system by the dealer does not have voice commands. See This: http://www.dealerworksinc.com/GMFactoryNav.htm

As far as I know everything else on the Nav system works the same. The traffic nav system has to be from a 2009+ unit and the software has to be up to date.

Hope this helps.

Louie

SchramAutoParts · June 6, 2011

So, had a bit of bad news at the dealership today.
My new to me 2009 Sierra Denali turned out to not be fully loaded after all. I have been having an issue with the NAV system not providing voice prompts and I thought it was due to my GMX550 lockpick install.

Soo, I removed the Lockpick and still did not have voice prompts. No big deal, I'll just take it to the Dealer and get it fixed. Dealer called me after 2 days and informed me that the NAV unit was a dealer add on unit and was not covered under warranty and most likely will not ever work correctly.

Whoa, was I torqued! I checked the VIN info on Compnine and sure enough, no NAV.

Everything seems to work fine except that there are no voice prompts and no XM traffic option (don't really care about the XM traffic).

My question is this, does anyone have any ideas as to why everything works except the NAV voice prompts? The chimes all seem to work, the RSE integration is flawless, the XM works great as well as the Bluetooth integration. My wife has a 2009 Tahoe with factory NAV so I have the exact same system to compare it to side by side and the previously mentioned 2 items are the only issues. I REALLY want the voice prompts to work. Is it something simple like the original dealership installed the wrong VSS/VCM harness or a programming issue?

I guess when I put things in perspective, if this is the biggest issue in my life, I'm doing pretty good. However, I am a perfectionist and little things like this drive me up the wall.

Thanks for listening and hopefully someone can shed some light on the subject for me.

Donnie

Is the talk voice prompts or voice commands? If it's voice prompts, does the arrow also get stuck from time to time and always point north? If so, they never installed a VSS wire, and that is your problem.

NitroCherokee · June 6, 2011

It is an incorrectly installed or not installed at all harness that comes with the NAV kit from GM, pull your radio and see if anything is plugged into the C4 (J4) connector. If not there is your problem. The reason you don't have voice guidance is there is no VSS input to the radio