2006 DTS Navigation/GPS.

[Eric DeVirgilis CLC# 8621]

The navigation system in a 2006 DTS is losing its satellite connection after the car had been sitting with the engine and ignition off. This is indicated by the GPS icon with a red slash through. Whenever the car is restarted, it takes anywhere from 10 - 15 minutes for the system to reestablish connectivity with satellite signals.

Signal is lost whether the car is parked indoors or outdoors. Correct operation can resume (once established prior) if the car is momentarily shut off and restarted, but it will be lost if the ignition remains off for as little as 15 minutes or less.

System never fails to establish connection but it always takes 10-15 minutes once the signal is lost - during which time the maps and guidance are completely inaccurate.

The manual mentions objects on dash, accessory roof racks and aftermarket window tinting may affect the system's ability to receive satellite signals but none of these factors apply.

Other Cadillacs of the same age I've had with navigation never did this - even one with aftermarket window tinting.  Any ideas what's going on?

[James Landi]

Electronic glitches of this sort can sometimes be traced on the internet.  Try a google search, and research if others have experienced the same problem.  I also wonder if the disc in your unit might have some debris on it.  These units, as you likely know, did not have "hard drives," and if you haven't already withdrawn the disc and cleaned it, that might be the issue. Also, if memory serves, there may be a cd/dvd player cleaner-- that "cleans" the laser pick up.   The unit in my XLR is of the same "technology vintage," and as you likely already know, the old technology does have certain advantages over the data wireless electronics that every smart phone and car has today.  When we travel in rural areas, this old fashioned system keeps you on track. I hope this helps.   James 

[Eric DeVirgilis CLC# 8621]

I had done some searching but I couldn't find anything really matching the symptoms I'm experiencing. I'll try your suggestion of cleaning the disc. Thanks. 

[Dan LeBlanc]

No matter what vehicle I've had in your area, Eric, I've always had trouble getting good GPS reception.  Whether it be my Garmin handheld, my Lincoln Navigator in-dash, or even the one in my old deVille.

That said, I'd be suspecting the antenna could be on it's way out.  GM still makes this part for the 06 DTS, but the rest of the Nav system components are discontinued.  Looks like it's tucked up behind the headliner above the LH a-pillar.  If GM still makes it, it could be a problem part.

[Eric DeVirgilis CLC# 8621]

Thanks for the suggestion Dan. I'm not sure the region is a factor though, since this is the only car that gave this problem of the many Navigation-equipped GM vehicles I've had. Tried cleaning the disc but it didn't help.

At least it'll work eventually which is better than nothing...