Used GMC Terrain for sale near Seneca, PA
-





$22,898
Est. $414/mo Chevrolet and GMC of Titusville
Check Availability Quick view Vehicle Information
- Ext. color
- Summit White
- Int. color
- Light Platinum
- Drivetrain
- All-wheel Drive
- MPG
- 21-26
- Fuel type
- Gasoline
- Transmission
- 9-Speed Automatic
- Engine
- 2.0L I4 16V GDI DOHC Turbo
- Stock #
- G6245A
- VIN
- 3GKALXEX0LL156657
Features
- Convenience
- Heated Steering Wheel
- Navigation System
- Power Liftgate
- Remote Start
- Entertainment
- Bluetooth®
- Premium Sound System
- Satellite Radio
- Exterior
- Alloy Wheels
- Safety
- Brake Assist
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
Chevrolet and GMC of Titusville review
We have always been treated with care and respect. When walking in the dealership you know you will get a friendly greeting. All service needs are met.
2020 GMC Terrain review
I have had this car 5 years 90000 km. No problems so far, it has been exceptionally good. The only money I have spent is gas and oil changes. I. Would buy another one
-





Quick view Vehicle Information
- Ext. color
- Quicksilver Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 25-28
- Fuel type
- Gasoline
- Transmission
- Automatic
- Engine
- 1.5L I-4 gasoline direct injection, DOHC, VVT variable valve con
- Stock #
- SA2403
- VIN
- 3GKALTEV7NL137226
Features
- Convenience
- Heated Seats
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Roof Rack
- Safety
- Automatic Emergency Braking
- Backup Camera
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Stability Control
Reviews
Smith's Auto Sales of Rimersburg review
I was a first time buyer and had no idea how to go about this whole process. Smith's was really easy to work with. They got me instantly approved and was driving away in my new ride! Thanks guys!
2022 GMC Terrain review
I fell in love with my GMC Terrain when I test drove it and have not lost that loving feeling! I have received tons of compliments on it.
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 25-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed Automatic
- Engine
- 1.5L I4 16V GDI DOHC Turbo
- Stock #
- B308
- VIN
- 3GKALVEV5NL251267
Features
- Convenience
- Heated Steering Wheel
- Power Liftgate
- Remote Start
- Entertainment
- Bluetooth®
- Satellite Radio
- Exterior
- Alloy Wheels
- Safety
- Backup Camera
- Brake Assist
- Lane Departure Warning
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
Chevrolet and GMC of Titusville review
Good experience every time with prompt pickup and delivery
2022 GMC Terrain review
Estamos muito felizes com nosso carro muito confortável muita seguro . Dar confiança ao motorista espaço bom para minha família eu minha esposa e dois filhos
-





Quick view Vehicle Information
- Ext. color
- Merlot Jewel Metallic
- Int. color
- Black
- Drivetrain
- Front-wheel Drive
- MPG
- 22-32
- Fuel type
- Gasoline
- Transmission
- 6-Speed Automatic
- Engine
- 2.4L I4 16V GDI DOHC
- Stock #
- 12466
- VIN
- 2GKALMEK1C6372668
Features
- Convenience
- Keyless Entry
- Entertainment
- Bluetooth®
- CD Player
- Satellite Radio
- Exterior
- Alloy Wheels
- Safety
- Backup Camera
- Brake Assist
- Stability Control
Reviews
KNB Motors Inc review
Murphy is best salesman will come back again highly recommend everyone looking for Murphy.Chris finance did good job too thank you so much guys!i like my honda civic
2012 GMC Terrain review
I've had mine for 12 years I've driven it a cross country 6 times. It is a fantastic vehicle. I pulled a small travel trailer and it didn't change my gas mileage one bit. From IL to LA California never a problem.
-





Quick view Vehicle Information
- Ext. color
- Summit White
- Int. color
- After Dark
- Drivetrain
- Front-wheel Drive
- MPG
- 26-28
- Fuel type
- Gasoline
- Transmission
- Automatic
- Engine
- 1.5L I-4 gasoline direct injection, DOHC, variable valve control
- Stock #
- 4642
- VIN
- 3GKALMEGXTL208357
Features
- Convenience
- Adaptive Cruise Control
- Heated Seats
- Heated Steering Wheel
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Safety
- Automatic Emergency Braking
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Rear Cross Traffic Alert
- Stability Control
- Seating
- Memory Seat
Reviews
Autos of Chicago review
However, I wanted to discuss my experience with this business. Adam was excellent; He sold me my daughter's first car. Michael, I worked very hard to obtain my daughter a decent financial offer. What matters is that she is happy with her car. Many thanks to everyone
2026 GMC Terrain review
We traded in our 2019 Buick Encore for this Terrain. Let's just say WOW on the room and comfort. We travel back and forth from NC to Ohio as family lives in both States. Well the Encore was nice on gas but not comfortable on long trips at all. This has great leg room (heated seats (both back and bottom) and this is a game changer for me with my arthritis. The cameras in this car are awesome. You can see clearly what is behind you when backing up. The lane assist will give you a little buzz in the seat on the side you have drifted too or if you are getting too close to an object or person when backing up. Nice cargo area. The back seat can also handle 3 adults with enough leg room. It's very comfy back there, I road in the back on the test drive since I sometimes sit in the back on trips so I can n change positions more. The 15 inch info center is impressive for sure. Still learning how to use it. If you want comfort in a nice looking SUV this is the one for you.
-
-





Quick view Vehicle Information
- Ext. color
- Blue
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 24-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed Automatic
- Engine
- 1.5L I4 16V GDI DOHC Turbo
- Stock #
- G26293A
- VIN
- 3GKALXEG7PL203849
Features
- Convenience
- Adaptive Cruise Control
- Heated Steering Wheel
- Keyless Start
- Navigation System
- Power Liftgate
- Remote Start
- Entertainment
- Apple CarPlay®
- Bluetooth®
- Premium Sound System
- Satellite Radio
- Exterior
- Alloy Wheels
- Sunroof/Moonroof
- Safety
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
Preston Chevrolet GMC review
I bought a vehicle on their Chevrolet side and it was a blessing in disguise..I am from Ohio and the Ohio dealers are BEYOND GREED.. $1500 for FAKE PAINT SEALANT $900.00 dealer fees NO SUPPLIER PROGRAMS ALLOWED..pure greed???????????????????????? If I would have bought this exact car in Ohio I would have been forced into a 84 month loan at a payment of $850.00 a month.. keep in mind the trailblazer I bought stickers for $33,000 you do the MATH..no thanks OHIO DEALERS I have lunch money and then some when I leave NEW CASTLE PA the Preston staff was awesome take that TWO HOUR OR EVEN 3 hour drive and save THOUSANDS special Thanks to Bryan Johnson who made it all happen.. JOE CAPOCCI
2023 GMC Terrain review
We purchased the Denali Terrain 2023. The car is great. I have had four knee surgeries and needed a car to get in and out easily and comfort seating. The controls for adjusting the seat just the way you like are great. I am troubled also by back problems and totally love the heated seat when needed. Sometimes I just want to ride around and turn the heat on and adjust seat so my back feels better. The different controls and are numerous. I love the safety control warnings and info with traffic. The screen is fabulous and helps so much. When ever I park I like to drive in and park and then hold on brake put it in reverse so the screen then comes on and shows how I parked. I like the levers in cargo area for putting seats down and also like how flat they sit. Plenty of room. The back seat is roomy even when person in front is back. Enjoy being up higher than a vehicle. I feel I can see more and it also makes me feel safer. The Terrain looks beautiful and love all the chrome in front. The car seems bumpy but not as bad as our last. The roads are in rough shape here. It has a lot of pick-up my husband demonstrated that to me and he wont be doing that again unless it is necessary. It is a turbo 4 cylinder and can not believe the power you feel. All in all Iove the car and getting good mileage. Purchased car from Boucher in Waukesha. They were not pushy. Explained everything in detail and were very fair. Great place to purchase!
-





Quick view Vehicle Information
- Ext. color
- Quicksilver Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 25-28
- Fuel type
- Gasoline
- Transmission
- Automatic
- Engine
- 1.5L I-4 gasoline direct injection, DOHC, VVT variable valve con
- Stock #
- 26108B
- VIN
- 3GKALYEV9NL226454
Features
- Convenience
- Heated Seats
- Heated Steering Wheel
- Keyless Entry
- Keyless Start
- Navigation System
- Power Liftgate
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Roof Rack
- Sunroof/Moonroof
- Safety
- Automatic Emergency Braking
- Backup Camera
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
2022 GMC Terrain review
Absolutely LOVE this car is one of my favorites by far. Midsize SUV with all the features of a full size luxury vehicle. Can’t beat the heated seats, power lift gate, and the amazing panoramic sunroof they added on these models. Will continue to buy this model for years to come highly recommend an affordable and practical vehicle!
-





Quick view Vehicle Information
- Ext. color
- Gray
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 25-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed Automatic
- Engine
- 1.5L I4 16V GDI DOHC Turbo
- Stock #
- G26215A
- VIN
- 3GKALVEV4ML361564
Features
- Convenience
- Adaptive Cruise Control
- Heated Steering Wheel
- Keyless Start
- Power Liftgate
- Remote Start
- Entertainment
- Apple CarPlay®
- Bluetooth®
- Satellite Radio
- Exterior
- Alloy Wheels
- Safety
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
Preston Chevrolet GMC review
I had a very good experience today leasing a new car. The sales staff were exceptional in helping me. Everything went smoothly and efficiently and I cannot be more pleased.
2021 GMC Terrain review
READ PLEASE I love my Terrain. DO NOT get the 1.5 L. My engine has barely made it over 100,000 I have had $6k of repairs in less than a year. Things keep going wrong now. I had NO issues before. Catalytic converter went out 75-85k miles. My turbo was just replaced. Just beware of this type of engine… every mechanic that worked on it shared this is not uncommon for this type. I would definitely get another terrain but not the 1.5!
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 23-28
- Fuel type
- Gasoline
- Transmission
- Automatic
- Engine
- 1.5L I-4 gasoline direct injection, DOHC, variable valve control
- Stock #
- B413
- VIN
- 3GKALXEG3RL261301
Features
- Convenience
- Adaptive Cruise Control
- Automatic Parking
- Cooled Seats
- Heated Seats
- Heated Steering Wheel
- Keyless Entry
- Keyless Start
- Navigation System
- Power Liftgate
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- Premium Sound System
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Roof Rack
- Sunroof/Moonroof
- Safety
- Automatic Emergency Braking
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Rear Cross Traffic Alert
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
2024 GMC Terrain review
I always bought the GMC Acadia (4 times) but decided to try the terrain. I absolutely love it and it's a great car for zipping around in town. I would take it for a weekend trip but not on a long trip as it doesn't have a lot of cab room, but for two people it is fine
-





$10,498
Est. $190/mo #1 Cochran CDJR of Allegheny Valley
Check Availability Quick view Vehicle Information
- Ext. color
- Summit White
- Int. color
- Jet Black
- Drivetrain
- Front-wheel Drive
- MPG
- 21-31
- Fuel type
- Gasoline
- Transmission
- 6-Speed Automatic
- Engine
- 2.4L I4 16V GDI DOHC
- Stock #
- 8201836A
- VIN
- 2GKALNEK2H6268512
Features
- Convenience
- Keyless Entry
- Navigation System
- Remote Start
- Entertainment
- Bluetooth®
- Premium Sound System
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Roof Rack
- Safety
- Backup Camera
- Brake Assist
- Stability Control
Reviews
#1 Cochran CDJR of Allegheny Valley review
The service at this dealership is well above par. Everyone needs an honest garage with honest people to bring their vehicle to. Especially if your vehicle plays a large part in your daily routine. Here it is. They get you in, they give it to you straight (and courteous), and they get it done. New or used, gas or diesel, cars and trucks. It’s a great experience from start to finish. Thanks again!
2017 GMC Terrain review
This wasn't the vehicle I'd gone to the lot to see... But it was parked 2 vehicles down, and the price was $3000 cheaper!! It even has more bells and whistles than the Toyota I'd initially planned on getting. Awesomeness!!
-





Quick view Vehicle Information
- Ext. color
- Summit White
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 24-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed A/T
- Engine
- 1.5L 4 Cylinder Engine
- Stock #
- G8351A
- VIN
- 3GKALXEG1PL217360
Features
- Convenience
- Adaptive Cruise Control
- Automatic Parking
- Cooled Seats
- Heated Seats
- Heated Steering Wheel
- Keyless Entry
- Keyless Start
- Navigation System
- Power Liftgate
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- HomeLink
- Premium Sound System
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Sunroof/Moonroof
- Safety
- Automatic Emergency Braking
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Rear Cross Traffic Alert
- Stability Control
- Seating
- Leather Seats
- Memory Seat
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 23-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed A/T
- Engine
- 1.5L 4 Cylinder Engine
- Stock #
- C5077
- VIN
- 3GKALVEG8RL385052
Features
- Convenience
- Adaptive Cruise Control
- Heated Seats
- Heated Steering Wheel
- Keyless Entry
- Keyless Start
- Navigation System
- Power Liftgate
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- HomeLink
- Premium Sound System
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Roof Rack
- Safety
- Automatic Emergency Braking
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Rear Cross Traffic Alert
- Stability Control
- Seating
- Leather Seats
- Memory Seat
Reviews
North Star Buick GMC review
I tend to dread the car buying process for a variety of reasons. I was able to do a lot of research online and shared my plan with the team at North Star and not once did I feel pressured to make a decision or speed any part of it up. I feel that my wishes and requirements were respected and the overall process was really smooth. I really respect that I wasn't badgered and harassed about buy-ups in the Finance office when I was signing everything as I have been at one of your competitors in the past. I listened, gave my response, and we moved on. If more dealers were up front and honest about this stuff, as North Star was, this wouldn't be a notoriously hated process to go through!
2024 GMC Terrain review
One of the most attractive looking t cars GMC has ever designed. Looks just like a Lexus. Extremely roomy. Love every aspect of my Terrain.
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 24-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed A/T
- Engine
- 1.5L 4 Cylinder Engine
- Stock #
- G8349A
- VIN
- 3GKALTEG4PL137978
Features
- Convenience
- Adaptive Cruise Control
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Safety
- Automatic Emergency Braking
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Rear Cross Traffic Alert
- Stability Control
Reviews
North Star Buick GMC review
I have been servicing my vehicles with North Star for years for location and ended up leasing with them. I am impressed with the sales leadership and will continue to work with them for new cars in the future.
2023 GMC Terrain review
We are very happy with our Terrain Denali. Our first choice was the 2023 Lincoln Corsair 1a but there are no in inventory. The Terrain Denali was 1b. Great styling exterior and interior
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 21-26
- Fuel type
- Gasoline
- Transmission
- 9-Speed A/T
- Engine
- 2.0L 4 Cylinder Engine
- Stock #
- C5072A
- VIN
- 3GKALTEX3JL128857
Features
- Convenience
- Heated Seats
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Safety
- Automatic Emergency Braking
- Backup Camera
- Brake Assist
- Stability Control
Reviews
North Star Buick GMC review
I had the pleasure of meeting a young gentleman named Jake at North Star Buick and GMC. Let me begin to tell you he is very attentive and set my mind at ease that they actually know what they're doing there. Didn't try to sell me more than what I needed. That's just unheard of! But then kept in contact with me the whole time made sure I understood what they found and repaired it we're as in the other Buick dealership had missed. Literally save my vehicle and repaired it with no argument. As matter of fact left me with a smile bigger than any other dealerships I've ever been to. I will purchase another car and this will be the dealership for me!
2018 GMC Terrain review
We love our GMC Terrain !! We recently purchased from former Mike Duman in Suffolk, VA which is now Priority Mitsubishi our salesman Mr.Knight is highly recommended He’s a man of God, great respectable person, and very professional!! Whenever you are in the area and you’re looking to purchase a vehicle contact Mr.Mervis Knight !!
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 24-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed A/T
- Engine
- 1.5L 4 Cylinder Engine
- Stock #
- G8369A
- VIN
- 3GKALTEG6PL218061
Features
- Convenience
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Safety
- Automatic Emergency Braking
- Backup Camera
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Stability Control
Reviews
North Star Buick GMC review
My husband and I are very pleased with today's experience at North Star! Dan took wonderful care of us and had the car we were interested ready and waiting for us upon arrival. The car we purchased is exactly as advertised and the buying process was a breeze! Highly recommend!
-





$27,975
Est. $506/mo North Star Buick GMC
Check Availability Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- After Dark
- Drivetrain
- All-wheel Drive
- MPG
- 24-28
- Fuel type
- Gasoline
- Transmission
- 8-Speed A/T
- Engine
- 1.5L 4 Cylinder Engine
- Stock #
- C5059
- VIN
- 3GKALUEG2SL257552
Features
- Convenience
- Adaptive Cruise Control
- Heated Seats
- Heated Steering Wheel
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Safety
- Automatic Emergency Braking
- Backup Camera
- Blind Spot Monitor
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Rear Cross Traffic Alert
- Stability Control
- Seating
- Memory Seat
Reviews
2025 GMC Terrain review
So far the car is going great. We have had no problems driving everywhere and so far had no need for services. It is a great care for me and my husband,
-





Quick view Vehicle Information
- Ext. color
- Ebony Twilight Metallic
- Int. color
- Jet Black
- Drivetrain
- All-wheel Drive
- MPG
- 25-28
- Fuel type
- Gasoline
- Transmission
- 9-Speed A/T
- Engine
- 1.5L 4 Cylinder Engine
- Stock #
- C5071
- VIN
- 3GKALTEV7NL299874
Features
- Convenience
- Heated Seats
- Keyless Entry
- Keyless Start
- Navigation System
- Remote Start
- Entertainment
- Android Auto®
- Apple CarPlay®
- Bluetooth®
- Satellite Radio
- USB Port
- WiFi Hotspot
- Exterior
- Alloy Wheels
- Safety
- Automatic Emergency Braking
- Backup Camera
- Brake Assist
- LED Headlights
- Lane Departure Warning
- Stability Control
Reviews
North Star Buick GMC review
Leased my Acadia the process was great and as advertised service has been terrific... will definitely recommend them and use them in the future for my next lease...
2022 GMC Terrain review
25 000 miles on it so far No issues at all Power is fine Bluetooth is terrible Memory seats need work Lumbar is a bad design
-
-
About the GMC Terrain
How much does the GMC Terrain cost?
The GMC Terrain price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for the Terrain is $20,426, with pricing starting at $1,700.
What is the MPG of the GMC Terrain?
The GMC Terrain with traditional internal combustion engine offers up to 26 MPG city and 30 MPG highway for a combined rating of 28 MPG.
These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle model year, trim, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the GMC Terrain?
The GMC Terrain compares to and/or competes against the following vehicles:
What trim levels are available for the GMC Terrain?
The GMC Terrain is available in the following trim levels:
What model years are available for the GMC Terrain?
Available model years for GMC Terrain inventory range from 2020 to 2026.