Faulty Gps Routing

paulie5959 · January 30, 2011

I have a 2009 Silverado with factory GPS. The unit tries to route me over roads which physically don't exist, and has tried to send me more than 30km out of my way to get to my destination. It also gets "stuck" sending me a certain way, and the automatic route update does not come up with new solutions. These are not areas of new construction/new roads (all of them are 25+ years) old. Has anybody else had these problems? Solutions?

8.1HD/ALLISON · January 30, 2011

Only thing I can think of is how the avoidances are set up? Like unpaved roads, toll roads, etc. in the menu?

paulie5959 · January 30, 2011

Only thing I can think of is how the avoidances are set up? Like unpaved roads, toll roads, etc. in the menu?

Thx. I will check. All the roads in the area are paved. There are no toll roads within 600 miles. Just small city roads and country highways (60mph max).

highspeedvehicle · January 30, 2011

For sure check the avoidances. Ive got an 09 too with the navi and just came back from a trip from Manhattan to Detroit then back home to Toronto and it was fine on the long stretches of highway but when me and my buddy tried to zoom in or adjust anything in the city it would lag a bit and we'd go off course. Nice feature but the lag can be frustrating.

paulie5959 · January 30, 2011

For sure check the avoidances. Ive got an 09 too with the navi and just came back from a trip from Manhattan to Detroit then back home to Toronto and it was fine on the long stretches of highway but when me and my buddy tried to zoom in or adjust anything in the city it would lag a bit and we'd go off course. Nice feature but the lag can be frustrating.

Avoidances are set to allow everything...

highspeedvehicle · February 2, 2011

For sure check the avoidances. Ive got an 09 too with the navi and just came back from a trip from Manhattan to Detroit then back home to Toronto and it was fine on the long stretches of highway but when me and my buddy tried to zoom in or adjust anything in the city it would lag a bit and we'd go off course. Nice feature but the lag can be frustrating.

Avoidances are set to allow everything...

Try unselecting seasonal roads see if that works if not take it in and fix under warranty hopefully you've still got coverage.