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  • Price Drop
    $17,299
    great price
    $6,805 below market
    120,899 miles
    3 Accidents, 2 Owners, Corporate fleet vehicle
    5'9” Bed, 5.3L, 8cyl
    Florida Fine Cars (156 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in West Palm Beach, FL / 156 miles away from Sydney, FL

    The 2015 GMC Sierra 1500 SLE is a rugged and capable full-size pickup truck known for its reliability and versatility. With its bold and muscular exte...

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    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: 3GTU2UEC8FG276405
    Stock: 132827
    Certified Pre-Owned: No
    Listed since: 04-01-2023

  • Price Drop
    Stock photo © eVox Productions**
    $23,593
    good price
    $2,381 below market
    89,910 miles
    No accidents, 2 Owners, Personal use
    6'7” Bed, 5.3L, 8cyl
    New Smyrna Chevrolet (104 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in New Smyrna Beach, FL / 104 miles away from Sydney, FL

    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:

    Listing Information:

    VIN: 3GTU2UEC3FG339359
    Stock: G296210A
    Certified Pre-Owned: No
    Listed since: 04-01-2024

  • $27,302
    good price
    $2,142 below market
    72,285 miles
    1 Accident, 2 Owners, Personal use only
    5'9” Bed, 6.2L, 8cyl
    Delray Buick GMC (169 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Delray Beach, FL / 169 miles away from Sydney, FL

    Odometer is 35759 miles below market average! Priced below KBB Fair Purchase Price!8-Speed Automatic with Overdrive, Jet Black Leather, 110-Volt AC Po...

    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: 3GTP1VEJ2FG391683
    Stock: 391683U
    Certified Pre-Owned: No
    Listed since: 03-28-2024

  • $19,500
    good price
    $1,501 below market
    135,900 miles
    No accidents, 2 Owners, Personal use only
    5'9” Bed, 5.3L, 8cyl
    Perfection Motors (73 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Longwood, FL / 73 miles away from Sydney, FL

    2015 GMC SIERRA 1500 SLT, 4X2 ,4DR. CREW CAB, 5.3L V8, AUTOMATIC TRANSMISSION, 135K MILES BEAUTIFUL BROWN ON BEIGE LEATHER, VERY CLEAN, POWER WINDOWS,...

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1VEC4FG148409
    Stock: 148409
    Certified Pre-Owned: No
    Listed since: 04-28-2024

  • Advertisement
    Also Consider

    10 Offers Nearby

    2024 GMC Sierra 1500 Denali
    $69,900
    starting MSRP
    • 6 Colors
    • 1 Trim
    • 6 Packages
    View Offers
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • Price Drop
    $24,843
    fair price
    $172 below market
    80,410 miles
    No accidents, 2 Owners, Personal use only
    5'9” Bed, 5.3L, 8cyl
    Davis Nissan of Jacksonville (162 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Jacksonville, FL / 162 miles away from Sydney, FL

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1VEC8FG370712
    Stock: P00130
    Certified Pre-Owned: No
    Listed since: 03-26-2024

  • Price Drop
    $29,590
    fair price
    $1,708 above market
    66,951 miles
    No accidents, 1 Owner, Personal use only
    5'9” Bed, 5.3L, 8cyl
    Carvana - Tampa (16 mi away)
    Free home delivery*
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Tampa, FL / 16 miles away from Sydney, FL

    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: 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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1VEC7FG315720
    Stock: 2002845604
    Certified Pre-Owned: No
    Listed since: 04-05-2024

  • Stock photo © eVox Productions**
    $22,869
    fair price
    $951 below market
    111,973 miles
    1 Accident, 3 Owners, Personal use only
    5'9” Bed, 5.3L, 8cyl
    New Smyrna Chevrolet (104 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Power Driver Seat
    Close

    Located in New Smyrna Beach, FL / 104 miles away from Sydney, FL

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1VEC9FG536672
    Stock: 0154469B
    Certified Pre-Owned: No
    Listed since: 04-04-2024

  • $19,876
    fair price
    $28 below market
    136,150 miles
    No accidents, 3 Owners, Personal use only
    5'9” Bed, 5.3L, 8cyl
    Orange Park Chrysler Jeep Dodge Ram (157 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Jacksonville, FL / 157 miles away from Sydney, FL

    2015 GMC Sierra 1500 SLE RWD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 Flex Fuel Iridium Metallic*CLEAN CARFAX*, Sierra 1500 SLE, 4D...

    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:

    Listing Information:

    VIN: 3GTP1UEC6FG309398
    Stock: 4159031B
    Certified Pre-Owned: No
    Listed since: 04-11-2024

  • Advertisement
    Also Consider

    10 Offers Nearby

    2024 GMC Sierra 1500 Denali
    $69,900
    starting MSRP
    • 6 Colors
    • 1 Trim
    • 6 Packages
    View Offers
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • Price Drop
    $32,892
    good price
    $1,872 below market
    27,609 miles
    1 Accident, 1 Owner, Personal use only
    5'9” Bed, 6.2L, 8cyl
    AutoNation Ford St. Petersburg (32 mi away)
    Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Saint Petersburg, FL / 32 miles away from Sydney, FL

    The following items have been reconditioned on this vehicle: new tires! Engine; 6.2L Ecotec3 V8 With Active Fuel Management; Direct Injection Sunro...

    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: 3GTU2WEJ1FG388697
    Stock: FG388697
    Certified Pre-Owned: No
    Listed since: 04-24-2024

  • $21,500
    fair price
    $42 below market
    72,984 miles
    No accidents, 4 Owners, Corporate fleet vehicle
    6'7” Bed, 4.3L, 6cyl
    Victory Auto Group (132 mi away)
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    • Trip Computer
    Close

    Located in Stuart, FL / 132 miles away from Sydney, FL

    Victory Auto Store is a family pre-owned car dealership. The store has been operating since 2011. We are located in Stuart, Florida - the 'Sailfish Ca...

    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:

    20 Combined MPG (18 City/24 Highway)

    Listing Information:

    VIN: 1GTR1UEH3FZ155091
    Stock: C23-451
    Certified Pre-Owned: No
    Listed since: 10-05-2023

  • 84,142 miles
    1 Accident, 5 Owners, Personal use
    6'7” Bed, 5.3L, 8cyl
    Florida Fine Cars (185 mi away)
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    • Trip Computer
    • Rear Bench Seats
    Close

    Located in Miami, FL / 185 miles away from Sydney, FL

    Synthetic Oil Change, New Tires, New Brakes, Tire Pressure Monitoring, Side Airbags, Premium Wheels, Power Mirrors, MP3, Keyless Entry, Auxiliary Powe...

    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: Yes

    Lemon Status: No

    Free History Report: No

    Features and Specs:

    Listing Information:

    VIN: 1GTR1TEC0FZ300201
    Stock: 141055
    Certified Pre-Owned: No
    Listed since: 04-16-2024

  • New Listing
    $23,900
    fair price
    $854 above market
    49,951 miles
    No accidents, 1 Owner, Personal use only
    6'7” Bed, 4.3L, 6cyl
    Starling Buick GMC Stuart (133 mi away)
    • AWD/4WD
    • Tire Pressure Warnin...
    • USB Inputs
    • Trip Computer
    • Rear Bench Seats
    Close

    Located in Stuart, FL / 133 miles away from Sydney, FL

    2015 GMC Sierra 1500 Base, Summit White, EcoTec3 4.3L V6 Flex Fuel 6-Speed Automatic Electronic with Overdrive 4WD CARFAX One-Owner. Clean CARFAX. ONE...

    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:

    19 Combined MPG (17 City/22 Highway)

    Listing Information:

    VIN: 1GTV2TEH5FZ225504
    Stock: 225504T
    Certified Pre-Owned: No
    Listed since: 05-06-2024

  • Price Drop
    Stock photo © eVox Productions**
    $24,927
    fair price
    $1,195 above market
    89,888 miles
    No accidents, 3 Owners, Personal use
    6'7” Bed, 5.3L, 8cyl
    Nissan of St Augustine (139 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Saint Augustine, FL / 139 miles away from Sydney, FL

    Recent Arrival! Nissan of St Augustine is proud to present you with another True Market Priced Pre-Owned Vehicle. This 2015 GMC Sierra 1500 SLT is loa...

    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:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 1GTV2VEC5FZ357761
    Stock: DFZ357761
    Certified Pre-Owned: No
    Listed since: 04-30-2024

  • Price Drop
    $19,000
    great price
    $5,569 below market
    152,314 miles
    No accidents, 4 Owners, Personal use
    5'9” Bed, 5.3L, 8cyl
    Napleton's Volkswagen Of Sanford (77 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Sanford, FL / 77 miles away from Sydney, FL

    2016 GMC Sierra 1500 Denali **CERTIFIED BY CARFAX - NO ACCIDENTS!**, *BACKUP CAMERA*, *BLUETOOTH HANDS FREE CALLING*, *MP3/USB/IPOD COMPATIBLE*, *ALLO...

    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:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2PEC5GG208596
    Stock: PMH5536C
    Certified Pre-Owned: No
    Listed since: 05-03-2024

  • 27,243 miles
    No accidents, 2 Owners, Personal use only
    6'7” Bed, 5.3L, 8cyl
    Sullivan Buick GMC Trucks (81 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Ocala, FL / 81 miles away from Sydney, FL

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 1GTR1VEC2FZ407410
    Stock: 23M268B
    Certified Pre-Owned: No
    Listed since: 04-09-2024

  • New Listing
    108,393 miles
    No accidents, 2 Owners, Personal use only
    6'7” Bed, 5.3L, 8cyl
    Sport Subaru (63 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    • Tire Pressure Warnin...
    Close

    Located in Orlando, FL / 63 miles away from Sydney, FL

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 1GTR1VECXFZ272905
    Stock: ST272905
    Certified Pre-Owned: No
    Listed since: 05-06-2024

  • New Listing
    $28,449
    great price
    $3,030 below market
    88,401 miles
    1 Accident, 2 Owners, Corporate fleet vehicle
    5'9” Bed, 5.3L, 8cyl
    Palm Beach Mitsubishi (158 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in West Palm Beach, FL / 158 miles away from Sydney, FL

    AutoCheck Vehicle History Summary

    Accident Free Vehicle: No

    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:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2PEC5GG310805
    Stock: PV310805
    Certified Pre-Owned: No
    Listed since: 05-06-2024

  • $16,995
    fair price
    $404 below market
    100,718 miles
    No accidents, 3 Owners, Corporate fleet vehicle
    8'2” Bed, 5.3L, 8cyl
    Next Ride Auto Sales (8 mi away)
    • Upgraded Headlights
    • Tire Pressure Warnin...
    • USB Inputs
    • Upgraded Engine
    • Trip Computer
    Close

    Located in Tampa, FL / 8 miles away from Sydney, FL

    CLEAN 2016 GMC SIERRA SLT 8FT BED, 3 PASSENGER, WHITE WITH GRAY CLOTH, 5.3L V8 WITH 100,846 MILES! 2 KEYS, 2 REMOTES, OWNERS MANUALS, TOWING PACKAGE, ...

    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: 1GTN1LECXGZ901728
    Stock: 0405231
    Certified Pre-Owned: No

  • $24,186
    fair price
    $1,106 below market
    104,874 miles
    No accidents, 2 Owners, Personal use
    5'9” Bed, 5.3L, 8cyl
    Bomnin Chevrolet Dadeland (197 mi away)
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    • Power Driver Seat
    Close

    Located in Miami, FL / 197 miles away from Sydney, FL

    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:

    19 Combined MPG (16 City/23 Highway)

    Listing Information:

    VIN: 3GTP1NEC3GG116987
    Stock: G166389A
    Certified Pre-Owned: No
    Listed since: 01-29-2024

  • $20,771
    fair price
    $1,068 below market
    83,212 miles
    1 Accident, 1 Owner, Personal use only
    6'7” Bed, 4.3L, 6cyl
    Tom Gibbs Chevrolet (120 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Palm Coast, FL / 120 miles away from Sydney, FL

    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:

    20 Combined MPG (18 City/24 Highway)

    Listing Information:

    VIN: 1GTR1UEH0EZ360222
    Stock: R0552A
    Certified Pre-Owned: No
    Listed since: 04-11-2024

  • $23,895
    fair price
    $339 above market
    123,722 miles
    No accidents, 5 Owners, Corporate fleet vehicle
    5'9” Bed, 5.3L, 8cyl
    Ocean Mazda West Kendall (196 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Miami, FL / 196 miles away from Sydney, FL

    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:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2VEC6EG253872
    Stock: 50174A
    Certified Pre-Owned: No
    Listed since: 04-24-2024

Showing 1 - 21 out of 1,460 listings

Consumer Reviews for the GMC Sierra 1500

Read recent reviews for the GMC Sierra 1500
Overall Consumer Rating
3.4 out of 5 stars68 Reviews
Write a vehicle reviewSee all 68 reviews
  • 5 star
    (34%)
  • 4 star
    (22%)
  • 3 star
    (12%)
  • 2 star
    (10%)
  • 1 star
    (22%)
5 out of 5 stars

2015 GMC Sierra 1500 Crew Cab SLT

papanav, 11/02/2014
2015 GMC Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
Purchased a 2015 Sierra 1500 SLT (crew cab) and traded in my 2014 Sierra 1500 SLE (double cab). I usually keep a vehicle for 10 years or more however, the only reason I traded was because of the very good incentive on the 2015 and the excellent deal I had gotten on the 2014 and the reasonable trade in price on the 2014. I now have 13,000 miles on the 2015 and feel that it is also an … excellent truck with many more amenities. The safety features to include back-up camera, parking warning, lane changing, navigation and hands free make for a very safe truck. I have not been able to attain quite the mileage I got on my 2014 even though I have a tonneau cover and drive the truck in a similar manner. The best I have been able to attain is 21.6 on a long trip. The advantage of a large vehicle with plenty of interior comfort, good mileage numbers, tons of room for luggage and smooth ride made this vehicle my vehicle of choice over a sedan or suv. I will add on to the information above which has not changed. I took a long trip to Michigan and pretty much backed up what I ha determined in the first review that I sent to you. I did attain 22mpg on one leg of the trip and 21.5 on the second leg of the trip. Truck still very comfortable, spacious and has given me absolutely no problems. I have had the oil, filter and tires rotated on schedule and had one recall corrected on the airbag system. I have owned the truck now for 25 months and still feel that it is a nice looking well made vehicle. I took a recent trip and was able to get 23.0 mpg which is slightly higher than advertised. The sweet spot is right about 70mph when the 5.3L engine is in 4v and on flat terrain. In that configuration it gets excellent mileage. The other sweet spot is driving a steady 55mph when the truck is in 4v. Presently I have 22,500 miles on the odometer and I am very satisfied with the vehicle. This is my third review after owning the truck for two and a half years. I have over 27,000 miles on the truck so far with no problems. I did notice that my transmission temp was running much hotter than the allison transmission that I have in my diesel but in looking into it further I found that 190 degrees is not an unusual temperature for this engine and transmission combination. This is my fourth review of my Sierra 1500 Crew Cab with just over 37,000 miles. So far so good, the truck continues to run very well with no complaints.. I changed the oil and filter myself and was surprised to see that the 5.3 liter engine takes 8.5 quarts of 0w-20 oil. In looking at the new GMC Sierra's as well as Ford and Ram 1500 series trucks I am amazed at how many gadgets they have placed in these vehicles with a corresponding price increase. Almost all of these vehicles are now priced in the mid 60 thousand dollar price range and the manufacturers are offering 10 year financing. Unbelievable!!! I recently replaced all four tires at 46,000 miles. They were original equipment and wore well. They were Goodyear Wrangler 275/55R20's. There was still probably 10.000 miles of wear left but I am not sure they would have been good for winter 9 months from now. My first check engine light came on indicating an evaporations leak code po455. I replaced the gas cap which of course did not fix it so I will find out what the problem is when I get the truck inspected this month. The evap system leak was found and determined to be a crack in a hose that was replaced and check engine light disappeared. I have taken trips using the range plug in unit that keeps my engine running on 8 cylinders all the time and I still was getting 21.5 mpg. Still no problems to speak of and still a handsome truck. At 51,000 miles I had all the fluids changed to include transmission, coolant, differential and transaxles. I now have 63,000 on the truck. I did have to replace the battery about 6 months ago but other than that absolutely no problems.
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FAQ

What is a good price for a used 2015 GMC Sierra 1500?

According to Edmunds.com's True Market Value calculations, the retail price of a used 2015 GMC Sierra 1500's most popular trim, the SLT, in great condition with 96,000 miles on its odometer, is $32,924. Prices vary by trim, region and options included.

What engine options are available for the 2015 GMC Sierra 1500?

The 2015 GMC Sierra 1500 is available with a 5.3 L-liter gas engine or a 4.3 L-liter flex-fuel (FFV) engine, with output up to 355 hp, depending on engine type.
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Edmunds' ratings are backed by 15+ years of pricing research done by our data scientistsHow are ratings determined?We analyze millions of data points to generate our ratings. We look at vehicle configuration, options, history, nearby transactions, market pricing and more — the ratings are up-to-date and relevant to your search area.

Trim

Truck Details

Cabin Size

Bed Length

Displacement

Mileage

to
Mileage

Vehicle History

Engine & Drivetrain

Transmission

Engine Type

Drivetrain

Cylinders

Exterior Color

Interior Color

Total Seating

Features

Comfort & Convenience

Safety

Engine & Exterior

Entertainment

Options & Packages

MPG

to
MPG

Vehicle Listing Details


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