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RV GPS

Ryanjb01
Explorer
Explorer
Hello everyone,

I am looking to get a GPS that I can program for trailer Weight, Height, Length etc.

I was thinking about getting the "Garmin RV 770 NA LMT-S RV". But would like to hear your thoughts.

Specifically about this one or similar units you have used.

What did you like about it(them) or dislike? Why?

Thanks for the input

Ryan
2018 GMC 3500 Denali Crew Cab Dually Duramax/Allison ๐Ÿ™‚
2015 Cedar Creek Silverback 35QB4
Ryan, Marsha, Alyssa and Emily

"Opportunity is missed by most people because it is dressed in overalls and looks like work" ~ Thomas Edison
18 REPLIES 18

Ryanjb01
Explorer
Explorer
I do not trust any 1 GPS, but I was hoping that the Garmin 770 RV would at least maybe give me a little more warning if I am approaching a "low bridge".

Another question I have is:

When using the Garmin 770 RV, if you just have the unit on, and do NOT have a destination programmed, but have your RV height set, will the GPS notify you of a low bridge?

Or does it have to be programmed for a specific route before it will identify low bridges?If that makes sense.

Ryan
2018 GMC 3500 Denali Crew Cab Dually Duramax/Allison ๐Ÿ™‚
2015 Cedar Creek Silverback 35QB4
Ryan, Marsha, Alyssa and Emily

"Opportunity is missed by most people because it is dressed in overalls and looks like work" ~ Thomas Edison

ktmrfs
Explorer II
Explorer II
we have the garmin RV750. yes you can program for vehicle length weight height etc. However it has one noticeable drawback. you can only program for overall length, not TV and trailer length. So....... it will tell you to avoid roads when it sees your overall length greater than the allowed trailer length for comercial trailers. It doesn't distinguish. And many times roads have a length limit for comercial trailers as well as overall length.

Next, many states list height restrictions for the corners of tunnels. and again, it can give you bad info, based on bad input. Not garmins fault but the sources fault. Likely any GPS will give the same problem if you can set overall height.

I've run into this issue on roads I KNEW I could travel on, been their, done that.


Overall, I like ours, it's nice to have the shortcuts for rv related things like campgrounds, repair etc.

and we have the matching rear camera, works great on the back of the trailer.

IMHO if your looking for a GPS, and you tow, no reason not to go with the garmin or similar RV GPS for the extra features they offer.
2011 Keystone Outback 295RE
2004 14' bikehauler with full living quarters
2015.5 Denali 4x4 CC/SB Duramax/Allison
2004.5 Silverado 4x4 CC/SB Duramax/Allison passed on to our Son!

GordonThree
Explorer
Explorer
I have the previous model, the RV 76o ... it works OK, but it is not infallible. I'm obsessive compulsive and thoroughly research all the roads around a destination and along a route, looking for surprises, so I don't get surprised by an error in the GPS.

The units are only as good as the data they're programmed with, and Garmin doesn't bother to double check any of the data the buy from where-ever. So if some community or map maker decides to mislabel the specs on a road, bridge, underpass, etc, Garmin will blindly accept that error and pass it along to you.

On the plus side, the voice command works great. The screen is huge and has a very wide brightness range, so you can see it in noon day sun, and it's not blinding you at night.

the tl;dr it's a great gps but don't follow it (or any device including the omnipotent Google) blindly.
2013 KZ Sportsmen Classic 200, 20 ft TT
2020 RAM 1500, 5.7 4x4, 8 speed

rr2254545
Explorer
Explorer
Best on the market - buy it
2012 Winnebago Journey 36M Cummins 360
2014 Jeep Cherokee
492 Campgrounds,107K miles driven in our Winnebago motor homes and 2360 nights camping since we retired in July 2009, 41 National Parks