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2,440 listings
  • $22,892
    good price
    $1,097 below market
    • 46,481 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 25 City / 28 Hwy MPG
    • Baumann Chevrolet Buick GMC (181 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Tiffin, OH / 181 miles away from Indianapolis, IN

    Odometer is 19890 miles below market average! CARFAX One-Owner. Clean CARFAX.Ebony Twilight Metallic 2021 GMC Terrain SLT 4D Sport Utility 1.5L DOHC 9...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (25 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEV4ML383449
    Stock: TG25193A
    Certified Pre-Owned: No
    Listed since: 04-16-2025

  • $23,683
    good price
    $866 below market
    • 43,869 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Bob Allen Nissan (162 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Danville, KY / 162 miles away from Indianapolis, IN

    Clean CARFAX. Summit White 2023 GMC Terrain SLE AWD 9-Speed Automatic 1.5L DOHC *Bluetooth*, Special Financing Available!, **Apple CarPlay**, **Backup...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALTEG7PL231031
    Stock: MP8391
    Certified Pre-Owned: No
    Listed since: 05-01-2025

  • $19,287
    fair price
    $488 below market
    • 60,134 miles
    • No accidents, 3 owners, corporate fleet vehicle
    • 5 Seats
    • Dan Cummins Chrysler Dodge Jeep RAM of Georgetown (137 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Georgetown, KY / 137 miles away from Indianapolis, IN

    **THIS VEHICLE HAS BEEN INSPECTED by our ASE technicians who performed a lube and oil change, and visually inspected the brakes.**

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GKALVEX5KL281513
    Stock: 16642
    Certified Pre-Owned: No
    Listed since: 05-02-2025

  • $22,499
    good price
    $1,183 below market
    • 53,304 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Enterprise Car Sales Columbus (172 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Columbus, OH / 172 miles away from Indianapolis, IN

    Transfer of vehicle from another location to your neighborhood Enterprise Car Sales may require payment of a non-refundable transfer fee to begin the ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEG2PL248850
    Stock: 7WWFC7
    Certified Pre-Owned: No
    Listed since: 05-28-2025

  • New Listing
    $16,998
    fair price
    $144 below market
    • 101,755 miles
    • No accidents, 2 owners, corporate fleet vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • CarMax Louisville (110 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Louisville, KY / 110 miles away from Indianapolis, IN

    CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: Yes

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEVXKL362716
    Stock: 27393050
    Certified Pre-Owned: No

  • $20,193
    fair price
    $537 below market
    • 50,122 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 25 City / 28 Hwy MPG
    • Chevrolet of Bucyrus (182 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Bucyrus, OH / 182 miles away from Indianapolis, IN

    Satin Steel Metallic 2021 GMC Terrain SLE AWD with a 9-speed automatic transmission and a 1.5L DOHC engine, featuring a well-equipped package selectio...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (25 City/28 Highway)

    Listing Information:

    VIN: 3GKALTEV4ML358314
    Stock: K1597
    Certified Pre-Owned: No
    Listed since: 08-16-2024

  • $22,425
    fair price
    $187 below market
    • 37,445 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 26 City / 30 Hwy MPG
    • Chevrolet Of Troy (106 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Troy, OH / 106 miles away from Indianapolis, IN

    Quicksilver Metallic 2021 GMC Terrain SLE CARFAX One-Owner. Clean CARFAX. Odometer is 13310 miles below market average! 110-Volt Power Outlet, 2 USB D...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    27 Combined MPG (26 City/30 Highway)

    Listing Information:

    VIN: 3GKALMEV7ML385531
    Stock: 50532A
    Certified Pre-Owned: No
    Listed since: 05-09-2025

  • $21,657
    fair price
    $344 below market
    • 56,782 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Jack Phelan Chevrolet (167 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Lyons, IL / 167 miles away from Indianapolis, IN

    Certified. 2023 GMC Terrain Summit White SLT 1.5L DOHC 9-Speed Automatic FWDGMC Certified Pre-Owned Details:* Roadside Assistance* Vehicle History* Li...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: Yes

    Features and Specs:

    26 Combined MPG (24 City/29 Highway)

    Listing Information:

    VIN: 3GKALPEG0PL171505
    Stock: G7865
    Certified Pre-Owned: No
    Listed since: 04-14-2025

  • Price Drop
    $23,700
    fair price
    $254 below market
    • 46,387 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Community Ford of Bloomington (46 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Bloomington, IN / 46 miles away from Indianapolis, IN

    *Vehicle Details*For those seeking a reliable and stylish SUV, look no further than this 2023 GMC Terrain SLT. With 46,387 miles, this well-maintained...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEG7PL114254
    Stock: W115
    Certified Pre-Owned: No
    Listed since: 05-22-2025

  • $19,488
    fair price
    $216 below market
    • 80,210 miles
    • No accidents, 2 owners, personal use
    • 5 Seats, 25 City / 28 Hwy MPG
    • Uftring Ford (190 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in East Peoria, IL / 190 miles away from Indianapolis, IN

    80K MILES! 2 OWNER TRADE IN!Satin Steel Metallic 2021 GMC Terrain SLT AWD 9-Speed Automatic 1.5L DOHC Apple CarPlay/Android Auto, Emergency communicat...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (25 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEV0ML344373
    Stock: 2144373
    Certified Pre-Owned: No
    Listed since: 07-15-2025

  • $28,425
    fair price
    $901 below market
    • 11,305 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 28 Hwy MPG
    • Art Moehn Honda (198 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Jackson, MI / 198 miles away from Indianapolis, IN

    This 2023 GMC Terrain AT4 , has a Desert Sand Metallic exterior and a Jet Black interior color. 11292 miles. Stock Number 72604A. You can connect with...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALYEG7PL110870
    Stock: 72604A
    Certified Pre-Owned: No
    Listed since: 07-19-2025

  • $22,166
    fair price
    $538 below market
    • 69,049 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Enterprise Car Sales Orland Hills (156 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Orland Hills, IL / 156 miles away from Indianapolis, IN

    Transfer of vehicle from another location to your neighborhood Enterprise Car Sales may require payment of a non-refundable transfer fee to begin the ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEG4PL160639
    Stock: 7V2GW6
    Certified Pre-Owned: No
    Listed since: 06-03-2025

  • $20,296
    fair price
    $163 below market
    • 63,027 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Taylor Kia of Lima (127 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Lima, OH / 127 miles away from Indianapolis, IN

    Taylor Kia of Lima is excited to offer this 2023 GMC Terrain SLT in Marine Metallic with Jet Black Leather. This Terrain is very well equipped with Ac...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/29 Highway)

    Listing Information:

    VIN: 3GKALPEGXPL129357
    Stock: KM9031
    Certified Pre-Owned: No
    Listed since: 05-07-2025

  • $18,751
    fair price
    $298 below market
    • 84,774 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 25 City / 28 Hwy MPG
    • Bill Walsh Honda (180 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Ottawa, IL / 180 miles away from Indianapolis, IN

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (25 City/28 Highway)

    Listing Information:

    VIN: 3GKALTEV2ML361650
    Stock: H45430-1
    Certified Pre-Owned: No
    Listed since: 05-25-2025

  • $19,998
    good price
    $1,782 below market
    • 35,355 miles
    • 1 accident, 1 owner, personal use
    • 5 Seats, 25 City / 28 Hwy MPG
    • EZ Auto Broker (197 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Keyless Entry/Start
    Close

    Located in Mount Vernon, OH / 197 miles away from Indianapolis, IN

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (25 City/28 Highway)

    Listing Information:

    VIN: 3GKALTEV6ML376720
    Stock: 376720
    Certified Pre-Owned: No
    Listed since: 01-14-2025

  • Price Drop
    $24,990
    fair price
    $502 below market
    • 56,756 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Carvana - Cincinnati (99 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Cincinnati, OH / 99 miles away from Indianapolis, IN

    At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALYEG1PL248033
    Stock: 2003864797
    Certified Pre-Owned: No
    Listed since: 07-11-2025

    • 21,527 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 29 Hwy MPG
    • Ray Skillman Auto Center Buick GMC (7 mi away)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Indianapolis, IN / 7 miles away from Indianapolis, IN

    2023 GMC Terrain SLT FWD Volcanic Red TintcoatOdometer is 24613 miles below market average! 24/29 City/Highway MPG 9-Speed Automatic 1.5L DOHC FWDIndy...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: Yes

    Features and Specs:

    26 Combined MPG (24 City/29 Highway)

    Listing Information:

    VIN: 3GKALPEG3PL129538
    Stock: K26945A
    Certified Pre-Owned: No
    Listed since: 06-12-2025

  • $17,999
    great price
    $2,961 below market
    • 86,123 miles
    • 1 accident, 2 owners, personal use
    • 5 Seats
    • Your Choice Auto Sales of Elgin (192 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Elgin, IL / 192 miles away from Indianapolis, IN

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 3GKALVEX8KL305142
    Stock: EYC-305142
    Certified Pre-Owned: No

  • $23,995
    good price
    $917 below market
    • 51,460 miles
    • 1 accident, 1 owner, personal use
    • 5 Seats, 24 City / 29 Hwy MPG
    • Schepel Buick GMC (135 mi away)
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    • Blind Spot Monitorin...
    Close

    Located in Merrillville, IN / 135 miles away from Indianapolis, IN

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    Personal Use Only: Yes

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/29 Highway)

    Listing Information:

    VIN: 3GKALMEG7PL170639
    Stock: 113716
    Certified Pre-Owned: Yes
    Listed since: 06-21-2025

  • $23,000
    fair price
    $26 below market
    • 57,841 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Kingdom Chevrolet (161 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Chicago, IL / 161 miles away from Indianapolis, IN

    Clean CARFAX. CARFAX One-Owner. 2023 4D Sport Utility GMC Terrain SLT Sterling Metallic 9-Speed Automatic AWD 1.5L DOHC License Plate Front Mounting P...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEG8PL197239
    Stock: P25147
    Certified Pre-Owned: No
    Listed since: 04-14-2025

  • $24,250
    fair price
    $12 below market
    • 45,647 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Smith Motors of Lowell (126 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Lowell, IN / 126 miles away from Indianapolis, IN

    Heated Leather Seats, *GREAT CONDITION, Inside and Out!!, Super Clean and Very Well Maintained, Back Up Camera, Bluetooth, Hands Free, Satellite Radio...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: Yes

    Personal Use Only: No

    History Provider: AutoCheck

    Title Details: Clean Title

    Salvage Vehicle: No

    Frame Damage: No

    Theft History: No

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALVEG8PL181087
    Stock: X253196
    Certified Pre-Owned: No
    Listed since: 04-14-2025

Showing 253 - 273 out of 2,440 listings

Consumer Reviews for the GMC Terrain

Read recent reviews for the GMC Terrain
Overall Consumer Rating
4.1 out of 5 stars55 Reviews
Write a vehicle reviewSee all 55 reviews
  • 5 star
    (58%)
  • 4 star
    (18%)
  • 3 star
    (7%)
  • 2 star
    (9%)
  • 1 star
    (7%)
4 out of 5 stars

2021 GMV Terrain SLT

Stgcret, 04/19/2021
2021 GMC Terrain SLT 4dr SUV (1.5L 4cyl Turbo 9A)
As of today, April 19/2023 I still own my Terrain purchased in November 2020. It has, so far, not given me a minute's issue. The 1.5L Turbo is "okay" but the 2.0L Turbo is so much better. The Terrain is a very well thought out vehicle. Back seat flip flat at the push of a button and easily clicks back in to place. Seats are at hip height, which at 71, makes them very easy to slide … in and out. The front bucket seats are fairly comfortable with many power adjustments. The front seats could use another 1/2" to 1" of width. I would buy this beauty again. UPDATE: I purchase my 2021 GMC Terrain brand new in November 2020 before the chip shortage, that isn't an issue with the 2021 at all. I just hit 20,000 miles a couple of weeks ago and all-in-all has been a pleasure to drive. I'm a big guy of 6' 2" and 285 and I easily slide in and out of my Terrain. Quiet ride and efficient and peppy 1.5L Turbo motor, although I would have preferred the 2.0L Turbo like I had in my 2018 Terrain, but the 2020 was the last year for the 2.0L On the SLT, that I have, are many positions to adjust the front seat and I do prefer the leather over cloth seats. For a 2-row seat SUV, there is plenty of room and the seats fold down at the touch of button or pull that works with the effort of one finger. I really like the info system and Sirius Radio. I have not used the Navigation or phone interface because I just don't need to. One oddball fact I discovered though is that when you want to take out the Cabin Filter, you have to use a 5.5 mm socket and that size is difficult to find. They need to go to a more conventional size like a 6 mm or 1/4 inch. UPDATE: I drove my 2021 Terrain SLT Elevation Edition out of the dealer showroom on 11/27/2020. I am 6' 2" and 72 yrs old. I specifically like the way I can slide in and easily slide out of the Terrain. I also find the front seat very comfortable and easy to adjust and has a nice lumbar support. I don't find the road noise so bad, but maybe that is because I have Talk Radio on all the time. I do agree that a 2.0 Turbo would be a better engine option. I owned a 2018 Terrain Denali with the 2.0L and I thought I was in a rocket when I stepped on the gas. I have owned my 2021 for 31 months now and have put 21,530 miles on the ol' girl and have not had a single issue, but there was one "what were they thinking moment" the screw for the driving compartment air filter is a 5.5 mm! I did change that filter at 18,000 miles although the manual called for 30,000 miles. Such an odd and hard to find size. I have changed the oil and filter every 5,000 miles and rotated the tires. I would like to see the same vehicle but 10" to 12" longer and maybe 4" to 6" wider to fit just a bit more beefy seat like the Tahoe has. Other than that I will most likely buy another Terrain and for sure if they reinstate the 2.0L Turbo.
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Used 2021 GMC Terrain in Indianapolis, IN Values

Estimated values
2021 GMC Terrain SLT 4dr SUV AWD (1.5L 4cyl Turbo 9A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$17,665$19,715$21,770
Clean$17,289$19,286$21,285
Average$16,662$18,569$20,476
Rough$15,847$17,639$19,424

The average list price of a used 2021 GMC Terrain in Indianapolis, Indiana is $22,222. The average mileage on a used GMC Terrain 2021 for sale in Indianapolis, Indiana is 55,207. Based on the average mileage of 55,207 for used 2021 GMC Terrain for sale in Indianapolis, IN and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Terrain 2021 in Indianapolis, Indiana to be $16,662.

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