Speed limit display is incorrect
Thread Starter
Heel & Toe
Joined: May 2014
Posts: 17
Likes: 0
From: Palm Springs CA
Speed limit display is incorrect
I tried searching the forum but didn't get a match. I have a new to me 2017 Z51 2LT with 41,000 miles. I like that I can display the current posted speed limit on the dash and/or the heads-up display but I'm finding the data is not always accurate. Trying to figure out where that speed limit data originates from so I can correct it. If it's from Navigation does Nav need an update? I'm still on the all inclusive On-Star trial period so I would think that information sourced from there would be up to date. Any thoughts?
Roadster Madness. 😠
Joined: Sep 2009
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From: Ventura Co Ca
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That is not entirely correct. I have updated tne Navigation whenever there is an update. I run Waze on my phone at the same time, for alerts on LEO's and stuff in the road.
I find the updated Navigation to be superior to Waze. Going through Los Angeles and converging with the HWY405 from the HWY101, Navigation gave me a shortcut that saved me 45 minutes. Waze did not even mention it.
Plus, all my directions go ro the Heads-up Display. I do not have to look away from the road.
I find the updated Navigation to be superior to Waze. Going through Los Angeles and converging with the HWY405 from the HWY101, Navigation gave me a shortcut that saved me 45 minutes. Waze did not even mention it.
Plus, all my directions go ro the Heads-up Display. I do not have to look away from the road.
Last edited by Vette Jockey; Feb 8, 2024 at 11:20 AM.
Pro
Joined: Nov 2018
Posts: 730
Likes: 974
From: Delray Beach, Florida
I found the GM nav to be very poor and out of date even with keeping it up to date. In fact there are many roads it didn't display a speed limit. I find Waze or Google maps way better and more accurate. Even the nav system in my Kia Stinger is better than the GM one. And that you can update for free.
The nav system in my previous Volvo was really cool. It actually had a camera that would read road signs, like for speed limit, school zones, etc. It would work in conjunction with the nav system.
The nav system in my previous Volvo was really cool. It actually had a camera that would read road signs, like for speed limit, school zones, etc. It would work in conjunction with the nav system.
Melting Slicks
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
That is not entirely correct. I have updated tne Navigation whenever there is an update. I run maze on my phone at the same time, for alerts on LEO's and stuff in the road.
I find the updated Navigation to be superior to Maze. Going through Los Angeles and converging with the HWY405 from the HWY101, Navigation gave me a shortcut that saved me 45 minutes. Maze did not even mention it.
Plus, all my directions go ro the Heads-up Display. I do not have to look away from the road.
I find the updated Navigation to be superior to Maze. Going through Los Angeles and converging with the HWY405 from the HWY101, Navigation gave me a shortcut that saved me 45 minutes. Maze did not even mention it.
Plus, all my directions go ro the Heads-up Display. I do not have to look away from the road.
Race Director
Joined: Feb 2001
Posts: 11,249
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From: Grapevine Tx
2018 C3 of Year Finalist
2016 C3 of the Year Finalist
Update your nav and you will get more accurate speed limits. I find my nav has it's uses around town vs pulling out the phone. And yes, google maps will be more up to date.
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You have to purchase the updates from the supplier to GM (threads are posted on here, usually when the updates go on sale). The updates are VIN specific and come on a USB flash drive.