Navigation unit installed date go bye bye. HELP!!!

[Omen87]

I don't think you will ever see a fix to the calendar issue. If I'm not mistaken, the DIC uses the clock in the factory stereo to keep time for the calendar.

[Carpepoon]

I don't think you will ever see a fix to the calendar issue. If I'm not mistaken, the DIC uses the clock in the factory stereo to keep time for the calendar.

Hate to bring up an old thread but hopefully it will help someone. I had the same problem a couple months ago when I installed my nav unit (date/time gone). Didn't bother me too much since I had heard that had happened to a few. But then last week I did an oil change for the first time since I installed the nav unit and I was unable to reset my oil life monitor. It monitored the life just fine, but the reset button did nothing. I changed the oil at about 30% so I had to do something before it started chiming at me to change my oil. I researched and it turns out I was given the wrong chime retention unit. I was given a GMRC-01 but what was supposed to get the GMOS-04. I believe this will fix the date/time issue as well. It just arrived yesterday and I plan on installing it this afternoon. I'll post back with if it works.

[jlagomarsino]

I believe you are correct. I'm experiencing the same issue with my GXP. I need to replace my Nav antenna to restore time to the radio. It kept working until the battery dies. The car was in storage for 6 months. I had installed the factory Nav (Denso 15263106) from my previous Grand Prix and added a Kenwood antenna to get it to see the bird, but that antenna has died for whatever reason. Now I cannot set the clock on the radio of the date on the DIC.

[Hurricane87]

I believe you are correct. I'm experiencing the same issue with my GXP. I need to replace my Nav antenna to restore time to the radio. It kept working until the battery dies. The car was in storage for 6 months. I had installed the factory Nav (Denso 15263106) from my previous Grand Prix and added a Kenwood antenna to get it to see the bird, but that antenna has died for whatever reason. Now I cannot set the clock on the radio of the date on the DIC.

So, why all this expense and effort to have less car than you bought? I keep asking this question, and I can never get an answer. Why is it that you people trust GM to build/source electronics that govern engine and transmission function, DoD, ABS, stability, etc., but you think they can't handle 1982 radio technology? What is the thinking there? And why do you want your car interior to be uglier?

[Hurricane87]

I don't think you will ever see a fix to the calendar issue. If I'm not mistaken, the DIC uses the clock in the factory stereo to keep time for the calendar.

This is definitely correct. I set the date in the DIC first in my car, and didn't do the clock on the stereo until the next day. The date advanced correctly the day after that.