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  • Stock photo**
    $16,583
    good price
    $1,830 below market
    • 120,685 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 4.3l, 6cyl
    • Seeger Toyota of St. Robert (120 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Saint Robert, MO / 120 miles away from Saint Louis, MO

    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: 1GTV2UEH3FZ398119
    Stock: 1977B
    Certified Pre-Owned: No
    Listed since: 04-03-2025

  • $24,994
    fair price
    $93 above market
    • 123,289 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 6.2l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    Recent Trade, Sold Here New! Denali 6.2 V8 Crew Cab 4x4. Navigation System, Power Sunroof, Towing Package, Trailer Brake Controller, 20' Wheels, Backu...

    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: 3GTU2WEJXFG339238
    Stock: L252625B
    Certified Pre-Owned: No
    Listed since: 04-04-2025

    • 217,188 miles
    • No accidents, 1 owner, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    Recent Trade, ONE OWNER! SLT 5.3 V8 Crew Cab 4x4. Navigation System, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With Locking ...

    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: 3GTU2VEC6FG414691
    Stock: L252362B
    Certified Pre-Owned: No
    Listed since: 03-24-2025

    • 78,165 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    1-Owner New Vehicle Trade! SLE 5.3 V8 Crew Cab 4x4. Z71, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With Locking Rear Differe...

    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: 3GTU2UEC9FG145869
    Stock: L253419A
    Certified Pre-Owned: No
    Listed since: 03-29-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 1 Trim
    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.
  • New Listing
    • 69,598 miles
    • No accidents, 2 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • NorthSide Ford Lincoln (95 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Effingham, IL / 95 miles away from Saint Louis, MO

    Only 69,480 Miles! Scores 22 Highway MPG and 16 City MPG! This GMC Sierra 1500 boasts a Gas V8 5.3L/325 engine powering this Automatic transmission. W...

    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: 1GTV2UEC8FZ417851
    Stock: 9695A1
    Certified Pre-Owned: No
    Listed since: 04-21-2025

  • Stock photo**
    • 105,315 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Napleton St. Louis Nissan (12 mi away)
    • Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in Saint Louis, MO / 12 miles away from Saint Louis, MO

    Clean CARFAX.2015 GMC Sierra 1500 SLE 6-Speed Automatic Electronic with Overdrive, 4WD, Black Cloth.Napleton Automotive Group has been serving it...

    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: 3GTU2UEC3FG176048
    Stock: SN340083B
    Certified Pre-Owned: No
    Listed since: 03-29-2025

    • 132,391 miles
    • 2 accidents, 1 owner, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Suntrup Buick GMC (24 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Saint Peters, MO / 24 miles away from Saint Louis, MO

    This vehicle is a 2015 GMC Sierra 1500 SLE Double Cab 4x4, with a 5.3 liter 8 cylinder engine and fuel injection. It has a crash test rating of 5 out ...

    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: 1GTV2UEC9FZ224625
    Stock: 53244-1
    Certified Pre-Owned: No
    Listed since: 04-02-2025

  • Stock photo**
    • 83,815 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • King City Chrysler Center (73 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in Mount Vernon, IL / 73 miles away from Saint Louis, MO

    Clean. iPod/MP3 Input, Satellite Radio, Flex Fuel, 4x4, Aluminum Wheels, Back-Up Camera. KEY FEATURES INCLUDE4x4, Back-Up Camera, Flex Fuel, Satell...

    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: 3GTU2UEC4FG510782
    Stock: CZ961
    Certified Pre-Owned: No
    Listed since: 02-27-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 1 Trim
    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.
  • New Listing
    Stock photo**
    • 122,804 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Ed Morse Chevrolet Buick GMC of Rolla (98 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Rolla, MO / 98 miles away from Saint Louis, MO

    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: 3GTU2VEC2FG432539
    Stock: 41711A
    Certified Pre-Owned: No
    Listed since: 04-22-2025

  • $14,962
    good price
    $2,875 below market
    • 125,981 miles
    • 2 accidents, 1 owner, personal use only
    • 6'7” bed, 4.3l, 6cyl
    • Heller Ford (158 mi away)
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    • Power Driver Seat
    Close

    Located in El Paso, IL / 158 miles away from Saint Louis, MO

    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: Yes

    Features and Specs:

    20 Combined MPG (18 City/24 Highway)

    Listing Information:

    VIN: 1GTR1UEH8EZ364924
    Stock: R13463A
    Certified Pre-Owned: No
    Listed since: 03-10-2025

  • $18,995
    good price
    $1,434 below market
    • 136,713 miles
    • No accidents, 1 owner, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Power Driver Seat
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    Recent Trade! SLE 5.3 V8 Extended Cab 4x4. All Terrain, Towing Package, Backup Camera, Backup Sensors, Heated Seats, Leather Wrapped Steering Wheel, S...

    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: 1GTV2MEC5GZ167258
    Stock: L25814A
    Certified Pre-Owned: No
    Listed since: 03-18-2025

  • Price Drop
    $29,495
    fair price
    $865 above market
    • 65,568 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    1-Owner New Vehicle Trade! SLT 5.3 V8 Crew Cab 4x4. Z71, Navigation System, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With L...

    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: 3GTU2NEC1GG198041
    Stock: L253406A
    Certified Pre-Owned: No
    Listed since: 03-14-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 1 Trim
    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.
  • New Listing
    $19,995
    good price
    $2,161 below market
    • 151,799 miles
    • 5'9” bed, 5.3l, 8cyl
    • Auto House of Bloomington (142 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Bloomington, IL / 142 miles away from Saint Louis, MO

    Check out this 2016 GMC SIERRA 1500 SLT 4WD. Clean Car Fax. Features include: alloy wheels, cruise control, 4WD, back up camera, leather, heated seats...

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    18 Combined MPG (16 City/22 Highway)

    Listing Information:

    VIN: 3GTU2NEC2GG269411
    Stock: 269411
    Certified Pre-Owned: No
    Listed since: 04-26-2025

  • $26,978
    fair price
    $468 above market
    • 48,718 miles
    • No accidents, 1 owner, personal use
    • 6'7” bed, 5.3l, 8cyl
    • Ridings Chevrolet Buick (130 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    Close

    Located in Monticello, IL / 130 miles away from Saint Louis, MO

    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: 1GTV2MEC2GZ167430
    Stock: B240017B
    Certified Pre-Owned: No
    Listed since: 03-15-2025

  • Photos not available
    $17,962
    fair price
    $1,389 below market
    • 170,184 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 6.2l, 8cyl
    • Heller Ford (158 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in El Paso, IL / 158 miles away from Saint Louis, MO

    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:

    Listing Information:

    VIN: 3GTU2WEJXEG376062
    Stock: U24981M
    Certified Pre-Owned: No
    Listed since: 12-10-2024

  • New Listing
    $21,995
    fair price
    $394 above market
    • 87,445 miles
    • No accidents, 1 owner, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    1-Owner New Vehicle Trade! SLE 5.3 V8 Crew Cab 4x4. Z71, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With Locking Rear Differe...

    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: 3GTU2UEC7EG133461
    Stock: L253755A
    Certified Pre-Owned: No
    Listed since: 04-08-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra 1500
    $65,400
    starting MSRP
    • 1 Trim
    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.
  • $23,577
    fair price
    $342 above market
    • 136,674 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Schlick Motors (93 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Jackson, MO / 93 miles away from Saint Louis, MO

    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: 3GTU2PEC8GG332992
    Stock: 332992
    Certified Pre-Owned: No
    Listed since: 01-07-2025

  • $24,995
    fair price
    $301 above market
    • 73,147 miles
    • No accidents, 4 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • NorthSide Ford Lincoln (95 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Effingham, IL / 95 miles away from Saint Louis, MO

    Only 73,147 Miles! Scores 22 Highway MPG and 16 City MPG! This GMC Sierra 1500 boasts a Gas/Ethanol V8 5.3L/325 engine powering this Automatic transmi...

    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: 1GTV2VEC8EZ162297
    Stock: 0351A
    Certified Pre-Owned: No
    Listed since: 03-29-2025

    • 121,456 miles
    • No accidents, 2 owners, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    Recent Trade! SLT 5.3 V8 Crew Cab 4x4. All Terrain, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With Locking Rear Differential...

    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: 3GTU2NEC7GG178327
    Stock: L252836A
    Certified Pre-Owned: No
    Listed since: 02-28-2025

  • New Listing
    • 99,107 miles
    • No accidents, 1 owner, personal use only
    • 5'9” bed, 5.3l, 8cyl
    • Laura Buick GMC (11 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Collinsville, IL / 11 miles away from Saint Louis, MO

    1-Owner New Vehicle Trade! SLT 5.3 V8 Crew Cab 4x4. Z71, Navigation System, Towing Package, Heavy Duty Trailering Package, 3.42 Rear Axle Ratio With L...

    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: 3GTU2NEC1GG305041
    Stock: L253250A
    Certified Pre-Owned: No
    Listed since: 04-04-2025

    • 164,894 miles
    • No accidents, 3 owners, personal use only
    • 6'7” bed, 5.3l, 8cyl
    • NorthSide Ford Lincoln (95 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Upgraded Headlights
    Close

    Located in Effingham, IL / 95 miles away from Saint Louis, MO

    Boasts 22 Highway MPG and 16 City MPG! This GMC Sierra 1500 delivers a Gas V8 5.3L/325 engine powering this Automatic transmission. WHEELS, 18" X 8.5"...

    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: 1GTV2MEC6GZ350572
    Stock: 0529A
    Certified Pre-Owned: No
    Listed since: 04-11-2025

Showing 1 - 21 out of 1,693 listings

Consumer Reviews for the GMC Sierra 1500

Read recent reviews for the GMC Sierra 1500
Overall Consumer Rating
3.4 out of 5 stars72 Reviews
Write a vehicle reviewSee all 72 reviews
  • 5 star
    (33%)
  • 4 star
    (24%)
  • 3 star
    (11%)
  • 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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Used 2015 GMC Sierra 1500 in Saint Louis, MO Values

Estimated values
2015 GMC Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$12,200$16,333$19,047
Clean$11,727$15,665$18,228
Average$10,940$14,553$16,863
Rough$9,917$13,106$15,088

The average list price of a used 2015 GMC Sierra 1500 in Saint Louis, Missouri is $22,083. The average mileage on a used GMC Sierra 1500 2015 for sale in Saint Louis, Missouri is 115,949. Based on the average mileage of 115,949 for used 2015 GMC Sierra 1500 for sale in Saint Louis, MO 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 Sierra 1500 2015 in Saint Louis, Missouri to be $10,940.

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