New and used 2026 GMC Terrain SUVs for sale near Slidell, LA

Rainbow Buick GMC in Covington LA has certainly set the bar for customer service! Never have I had such an excellent experience at a dealership as I have at this business. There are not enough words that can express my gratitude before, during , and after the sale of my GMC Sierra 1500 Denali. Everyone from the Front-desk Receptionist, Sarah McGuire, Accounting Ursi Dexter, Parts Dept. Justin Lee, Body Shop Mgr. Andy Curry, Service Manager Joel Miller and his team if highly skilled and personable staff. I can say that Owner Craig Boudreaux DEFINITELY knows his business and his team of AMAZING staff honestly cares for their customers!!!n Thank you RAINBOW NORTHSHORE BUICK GMC!!!

I’m 56 and I’ve mostly owned trucks in my life. Out of the few cars that I’ve owned this 26 terrain elevation edition is the best car that I’ve owned. It’s comfortable and expensive gets good gas mileage plenty of room inside well designedand GMC has been a reliable brand for me over the years. I do recommend this car.

Been purchasing auto?s from Louie for years! Super nice guy! Go see him for your next vehicle purchase!

This is a very beautifu vehicle, very dependable but the gas mileage could be better. With all of the new technology, it is somewhat difficult to remember all of the various control panel options. Also the owner’s manual is very skimpy.

Great follow up scheduling went perfect. Repairs were done quickly and it looks awesome.

The service was excellent and all Employees were professional and kind to work with. I highly recommend Mossy for purchasing a new vehicle or to have an existing vehicle serviced.

Jacob was AWESOME made sure my problem was taken care of! Good job Jacob !

took a little while to locate the part but once it came in, installation was done to my satisfaction.

Great and easy no stress or presure, fast and friendly very informative and had us out of there in no time love my new truck

Love Jacob! He might be my favorite person at the whole dealership. As soon as he sees me drive up, he walks up with a smile on his face.

I'm always pleased with Mossy, but this time they went beyond all expectations. The issues I had with my vehicle was very challenging, but Mossy never gave up (a BIG THANKS to Jeff, he's the man). Mossy called in a GM engineer.....WOW. Problem solved! I tell you this dealership treat their customers like family.

Lots of inventory, clean n comfortable showroom, salesmen are personable, efficient, knowledgeable, n answered all inquiries

I have had many Jeeps, when they stopped making the Cherokee I was at a loss until I came upon the GMC Terrain and so happy I did. Great style, performance handles great, many exceptional features, I spend a lot of time driving and never feel like it is tiring, lots of room in cabin and the cargo area. I have a new favorite, and it is the Terrain

Curtis Gasper was super nice and easy to deal with and didn?t pressure me. I got the truck I wanted at the price I wanted. Kirk Dominique in Finance was also super nice and did not pressure me to purchase add ons that I didn?t want, and he negotiated well on the ones I did want. It was worth the hour drive.

Shopped several dealers and Mossy was the easier to work with finding the best truck at the best price. Handled most of everything before arriving to pick up new GMC. Thanks for making it easy.