I have the built in Nav system in my 2011 Silverado and enjoy using it. Because it runs on a DVD, it has lots of information about exits, etc. However with that said, I also have a Garmin 1490 mounted on the dash. My wife thinks it is a bit of over kill. The Garmin is much easier to get the elevation, the current vehicle speed and the speed limit. The Chevy Nav system has a larger screen and mounted in the center of the dash, is easier for the passenger to use/mess with/etc. However some functions on the Chevy Nav system are locked out when the vehicle is moving, the Garmin allows that to be over ridden. However that issue can be worked around by using the OnStar system in the truck. I just call OnStar, ask the operator to download a route for me and in less than a minute it arrives on my navigation system. I like to use this, especially when traveling by myself. No need to stop to set the new destination into the unit. I can also ask for a route to the nearest Wal Mart, Target, etc. store and up it pops on the vehicle screen. Fairly close to magic IMHO.
The dash system was in the vehicle when I bought it new, and I suspect I would reorder one if I was getting one built. My BIL recently bought a new car and then had Best Buy or one of the other stores install an after market nav system in his dash. I think it was a Pioneer brand but not too sure. He likes the system and feels he saved some money going that route instead of having the dealer do it.
Just pulled the window sticker out of the file cabinet and it lists the Nav system - touch screen with satellite radio plus CD player for $2,250. Who knows what I actually paid for the system as they gave me roughly 20% off the sticker price when I bought the truck. Anyway you look at it, is is a lot more expensive than going aftermarket. Plus the upgrades on the mapping DVD is $200, more than I paid for my Garmin.
The Chevy unit is nice. Here is a shot not long after we departed Amarillo Texas, headed for Dallas, showing 6 hrs, 6 min, 336 miles to destination, no turn for 142 miles and Prime Country playing on the satellite radio. Looks to need a bit of dust removal. LOL
joe b.
Stuart Florida
Formerly of Colorado and Alaska
2016 Fleetwood Flair 31 B Class A w/bunks
www.picturetrail.com/jbpacooper
Alaska-Colorado and other Trips posted
"Without challenge, adventure is impossible".