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  • $22,349
    good price
    $885 below market
    • 51,045 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Elmwood Park, NJ / 101 miles away from Reading, PA

    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/29 Highway)

    Listing Information:

    VIN: 3GKALPEG6PL199762
    Stock: 7WJ31H
    Certified Pre-Owned: No
    Listed since: 04-21-2025

    • 51,528 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in San Antonio, TX / 1,479 miles away from Reading, PA

    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/29 Highway)

    Listing Information:

    VIN: 3GKALPEG7PL171646
    Stock: 2003655733
    Certified Pre-Owned: No
    Listed since: 04-22-2025

  • $23,198
    fair price
    $251 below market
    • 48,353 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Augusta, GA / 582 miles away from Reading, PA

    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/29 Highway)

    Listing Information:

    VIN: 3GKALPEG4PL203856
    Stock: 7WVJXV
    Certified Pre-Owned: No
    Listed since: 04-22-2025

  • $22,998
    good price
    $1,002 below market
    • 41,702 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Stockton, CA / 2,408 miles away from Reading, PA

    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/29 Highway)

    Listing Information:

    VIN: 3GKALPEG4PL194074
    Stock: 7WBXF1
    Certified Pre-Owned: No
    Listed since: 04-24-2025

  • $24,499
    good price
    $1,211 below market
    • 40,708 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in East Hartford, CT / 196 miles away from Reading, PA

    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: 3GKALVEG2PL227514
    Stock: 7WFDD5
    Certified Pre-Owned: No
    Listed since: 04-22-2025

  • $21,990
    fair price
    $551 below market
    • 46,350 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Cincinnati, OH / 465 miles away from Reading, PA

    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/29 Highway)

    Listing Information:

    VIN: 3GKALPEG3PL171661
    Stock: 2003659569
    Certified Pre-Owned: No
    Listed since: 04-18-2025

    • 52,117 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 24 City / 29 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Humble, TX / 1,303 miles away from Reading, PA

    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: 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: 3GKALPEG5PL257750
    Stock: 7WQVVG
    Certified Pre-Owned: No
    Listed since: 04-21-2025

  • Price Drop
    $22,999
    good price
    $1,272 below market
    • 57,100 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Pittsburgh, PA / 222 miles away from Reading, PA

    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: 3GKALVEG3PL159501
    Stock: 7W02QJ
    Certified Pre-Owned: No
    Listed since: 04-24-2025

  • Price Drop
    $27,418
    good price
    $2,079 below market
    • 27,025 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 24 City / 28 Hwy MPG
    • Tom Masano Ford Lincoln (4 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Reading, PA / 4 miles away from Reading, PA

    2023 GMC Terrain AT4 AWD CARFAX One-Owner. Clean CARFAX. AWD.Odometer is 1989 miles below market average!

    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: 3GKALYEGXPL229478
    Stock: F20095A
    Certified Pre-Owned: No
    Listed since: 05-15-2025

  • $15,998
    good price
    $1,669 below market
    • 39,982 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 24 City / 28 Hwy MPG
    • Axis Chevrolet (99 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Jersey City, NJ / 99 miles away from Reading, PA

    CARFAX One-Owner. Clean CARFAX. AWD. Summit White 2019 GMC Terrain SLE AWD 9-Speed Automatic 1.5L DOHCAxis Motorcars has one of the largest selections...

    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: 3GKALTEV5KL310415
    Stock: KL310415
    Certified Pre-Owned: No
    Listed since: 04-17-2025

  • $22,999
    fair price
    $270 below market
    • 50,597 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 29 Hwy MPG
    • Enterprise Car Sales (In-stock online)
    • Home delivery*
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Mobile, AL / 957 miles away from Reading, PA

    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/29 Highway)

    Listing Information:

    VIN: 3GKALPEG1PL257180
    Stock: 7W40S5
    Certified Pre-Owned: No
    Listed since: 04-23-2025

  • New Listing
    $14,805
    good price
    $2,406 below market
    • 56,485 miles
    • 5 Seats
    • Boardwalk Honda (98 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Egg Harbor Township, NJ / 98 miles away from Reading, PA

    Extra Clean, ONLY 56,485 Miles! REDUCED FROM $16,000!, PRICED TO MOVE $1,000 below J.D. Power Retail! Heated Leather Seats, Navigation, Aluminum Wheel...

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    Listing Information:

    VIN: 2GKFLUE36H6210847
    Stock: H6210847
    Certified Pre-Owned: No
    Listed since: 05-22-2025

  • Price Drop
    $25,900
    fair price
    $757 below market
    • 14,455 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 28 Hwy MPG
    • Granite Run Buick GMC (40 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Media, PA / 40 miles away from Reading, PA

    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: 3GKALTEG0PL166782
    Stock: 25G160A
    Certified Pre-Owned: No
    Listed since: 04-10-2025

  • $28,999
    good price
    $1,996 below market
    • 20,512 miles
    • No accidents, 1 owner, personal use only
    • 5 Seats, 24 City / 28 Hwy MPG
    • Fred Beans GMC (41 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Doylestown, PA / 41 miles away from Reading, PA

    Recent Arrival! Odometer is 7127 miles below market average!2023 GMC Terrain AT4 1.5L DOHC AWD 9-Speed Automatic Summit WhiteFor better peace of mind ...

    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: 3GKALYEG3PL137211
    Stock: MG600061
    Certified Pre-Owned: No
    Listed since: 06-21-2025

  • New Listing
    $24,995
    good price
    $1,804 below market
    • 4,713 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 28 Hwy MPG
    • Frank's GMC (99 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Lyndhurst, NJ / 99 miles away from Reading, PA

    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: 3GKALTEG3PL207986
    Stock: 8525
    Certified Pre-Owned: No
    Listed since: 06-07-2025

  • $26,500
    fair price
    $829 below market
    • 11,696 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 28 Hwy MPG
    • Ciocca Chevrolet (30 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Quakertown, PA / 30 miles away from Reading, PA

    CARFAX 1-Owner, LOW MILES - 11,696! $1,400 below Kelley Blue Book! Heated Leather Seats, iPod/MP3 Input, Back-Up Camera, Power Liftgate, AWD, SIDE BLI...

    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: 3GKALVEGXPL232010
    Stock: 20232010
    Certified Pre-Owned: No
    Listed since: 03-28-2025

  • $22,500
    good price
    $1,840 below market
    • 50,959 miles
    • No accidents, 1 owner, rental vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Aubrey Alexander Toyota (59 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Selinsgrove, PA / 59 miles away from Reading, PA

    Summit White 2023 GMC Terrain SLT AWD 9-Speed Automatic 1.5L DOHC 4 WHEEL DRIVE/ALL WHEEL DRIVE, ONE OWNER, SERVICED HERE, FREE LIFETIME STATE INSPECT...

    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: 3GKALVEG7PL199872
    Stock: SP4932
    Certified Pre-Owned: No
    Listed since: 03-30-2025

  • Price Drop
    $24,919
    good price
    $1,443 below market
    • 12,854 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 29 Hwy MPG
    • Faulkner Buick GMC (51 mi away)
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    • Blind Spot Monitorin...
    Close

    Located in Trevose, PA / 51 miles away from Reading, PA

    2023 GMC Terrain SLE Sterling Metallic GMC Certified Pre-Owned Certified, 2 USB Data Ports w/Auxiliary Input Jack, 3.47 Axle Ratio, 4-Way Manual Drive...

    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/29 Highway)

    Listing Information:

    VIN: 3GKALMEG0PL118561
    Stock: PL118561A
    Certified Pre-Owned: Yes
    Listed since: 06-17-2025

  • Price Drop
    $25,590
    good price
    $1,249 below market
    • 12,248 miles
    • No accidents, 1 owner, corporate fleet vehicle
    • 5 Seats, 24 City / 28 Hwy MPG
    • Carvana (In-stock online)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Atlanta, GA / 653 miles away from Reading, PA

    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: Yes

    Features and Specs:

    26 Combined MPG (24 City/28 Highway)

    Listing Information:

    VIN: 3GKALTEG6PL237905
    Stock: 2003760010
    Certified Pre-Owned: No
    Listed since: 05-30-2025

  • Price Drop
    $28,795
    good price
    $1,992 below market
    • 15,064 miles
    • No accidents, 1 owner, personal use
    • 5 Seats, 24 City / 28 Hwy MPG
    • Coleman Buick GMC (64 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Lawrenceville, NJ / 64 miles away from Reading, PA

    Clean CARFAX. CARFAX One-Owner.Certified. Sterling Metallic 2023 GMC Terrain AT4 AWD 1.5L DOHC 9-Speed AutomaticOdometer is 6409 miles below market av...

    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: 3GKALYEG7PL244116
    Stock: U8402
    Certified Pre-Owned: Yes
    Listed since: 05-15-2025

  • Price Drop
    $20,446
    good price
    $2,703 below market
    • 50,027 miles
    • 1 accident, 1 owner, personal use only
    • 5 Seats
    • Keene Dodge Chrysler Jeep Ram (60 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Jarrettsville, MD / 60 miles away from Reading, PA

    CARFAX One-Owner. Satin Steel Metallic AWD 9-Speed Automatic 2.0L TurbochargedOdometer is 23449 miles below market average! 21/26 City/Highway MPGAwar...

    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: 3GKALVEX3KL107553
    Stock: P3790
    Certified Pre-Owned: No
    Listed since: 06-06-2025

Showing 715 - 735 out of 1,676 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 2023 GMC Terrain in Reading, PA Values

Estimated values
2023 GMC Terrain SLT 4dr SUV (1.5L 4cyl Turbo 9A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$19,266$20,944$22,839
Clean$19,025$20,659$22,505
Average$18,622$20,185$21,948
Rough$18,099$19,569$21,224

The average list price of a used 2023 GMC Terrain in Reading, Pennsylvania is $23,461. The average mileage on a used GMC Terrain 2023 for sale in Reading, Pennsylvania is 35,977. Based on the average mileage of 35,977 for used 2023 GMC Terrain for sale in Reading, PA 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 2023 in Reading, Pennsylvania to be $18,622.

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* Delivery of any kind does not apply to Alaska and Hawaii. Contact the dealer for delivery details, restrictions and costs.