Skip to main content
Skip to Filters
413 listings
  • $28,388
    good price
    $2,468 below market
    133,798 miles
    No accidents, 2 Owners, Personal use only
    6'7” Bed, 6L, 8cyl
    Johnson Auto Plaza (15 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Power Driver Seat
    Close

    Located in Brighton, CO / 15 miles away from Aurora, CO

    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: 1GC1KVEG3JF142570
    Stock: G424929A
    Certified Pre-Owned: No
    Listed since: 04-26-2024

  • 51,570 miles
    No accidents, 2 Owners, Corporate fleet vehicle
    6'7” Bed, 6.6L, 8cyl
    AutoNation Chevrolet North (17 mi away)
    Home delivery*Five Star Dealer
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Denver, CO / 17 miles away from Aurora, CO

    Duramax Plus Package Ltz Plus Package Leather Seats Audio System; Chevrolet Mylink Radio With Navigation And 8" Diagonal Color Touch-Screen; AM/FM Ste...

    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: 1GC1KWEY6JF283048
    Stock: JF283048
    Certified Pre-Owned: No
    Listed since: 04-09-2024

  • Price Drop
    $25,990
    great price
    $5,360 below market
    105,701 miles
    No accidents, 1 Owner, Personal use
    8'2” Bed, 6L, 8cyl
    AutoNation Chrysler Jeep West (27 mi away)
    Home delivery*Five Star Dealer
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Power Driver Seat
    Close

    Located in Golden, CO / 27 miles away from Aurora, CO

    Wt Convenience Package Tires; Lt275/65R18E 123/120Q Maximum Traction Blackwall Bed Liner; Spray-On Tire; Spare Lt265/70R18E All-Season; Blackwall Whee...

    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: 2GC2KREG7K1147842
    Stock: K1147842
    Certified Pre-Owned: No
    Listed since: 04-03-2024

  • $25,998
    great price
    $5,161 below market
    105,376 miles
    No accidents, 1 Owner, Personal use
    8'2” Bed, 6L, 8cyl
    Mr. Roberts Auto Sales (19 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Power Driver Seat
    Close

    Located in Denver, CO / 19 miles away from Aurora, CO

    Visit Mr Roberts Auto Sales online at www.mrrobertsinc.com and call us at 303-430-0400 today to schedule your test 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:

    Listing Information:

    VIN: 2GC2KREG2K1146226
    Stock: M2327
    Certified Pre-Owned: No

  • $35,887
    great price
    $6,332 below market
    71,303 miles
    No accidents, 1 Owner, Corporate fleet vehicle
    6'7” Bed, 6L, 8cyl
    DYE Enterprise (23 mi away)
    Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in Wheat Ridge, CO / 23 miles away from Aurora, CO

    If you want a 3/4 ton crew cab with a flatbed and 4x4 this one has good miles and its ready to work. dyeautos.com stk#33927call today!

    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: 1GC1KSEG1KF256082
    Stock: 33927
    Certified Pre-Owned: No
    Listed since: 10-19-2023

  • $50,889
    good price
    $3,515 below market
    53,601 miles
    No accidents, 1 Owner, Personal use only
    6'7” Bed, 6.6L, 8cyl
    Johnson Auto Plaza (15 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Brighton, CO / 15 miles away from Aurora, CO

    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: 1GC1KWEYXHF201199
    Stock: G487239A
    Certified Pre-Owned: No
    Listed since: 04-25-2024

  • Price Drop
    40,506 miles
    No accidents, 1 Owner, Personal use only
    6'7” Bed, 6.6L, 8cyl
    Sill-Terhar Motors (24 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Broomfield, CO / 24 miles away from Aurora, CO

    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: 1GC1KXEY8HF182836
    Stock: 68311A1
    Certified Pre-Owned: No
    Listed since: 02-29-2024

  • Price Drop
    $34,698
    fair price
    $84 below market
    90,341 miles
    No accidents, 3 Owners, Personal use only
    6'7” Bed, 6L, 8cyl
    AutoNation Dodge Ram Colorado Springs (58 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Colorado Springs, CO / 58 miles away from Aurora, CO

    Midnight Edition Lt Convenience Package Seats; Front 40/20/40 Split-Bench; 3-Passenger. Z71 Package; Off-Road Lpo; Assist Steps - 4" Black - Round Tra...

    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: 1GC1KVEG1HF112882
    Stock: HF112882
    Certified Pre-Owned: No
    Listed since: 04-20-2024

  • Price Drop
    Stock photo**
    $42,999
    fair price
    $1,402 below market
    64,058 miles
    No accidents, 3 Owners, Personal use
    8'2” Bed, 6.6L, 8cyl
    Turner Automotive (192 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Tire Pressure Warnin...
    Close

    Located in Montrose, CO / 192 miles away from Aurora, CO

    *Vehicle Details*Get ready to tackle any adventure with this powerful and reliable 2019 Chevrolet Silverado 2500 LT! With only 64040 miles on the odom...

    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: 1GC1KSEY6KF159016
    Stock: U6572
    Certified Pre-Owned: No
    Listed since: 03-29-2024

  • 114,864 miles
    2 Accidents, 2 Owners, Corporate fleet vehicle
    6'7” Bed, 6L, 8cyl
    Berkenkotter Motors - Brighton (18 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Brighton, CO / 18 miles away from Aurora, CO

    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: 1GC1KVEG4HF123827
    Stock: T15307
    Certified Pre-Owned: No
    Listed since: 03-12-2024

  • 71,388 miles
    No accidents, 3 Owners, Personal use only
    6'7” Bed, 6.6L, 8cyl
    Castle Rock Chevrolet GMC (30 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Castle Rock, CO / 30 miles away from Aurora, CO

    Allison 1000 6-Speed Automatic, 4WD, Black Leather.Red Hot 2019 Chevrolet Silverado 2500HD LTZ 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turb...

    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: 1GC1KTEY4KF233801
    Stock: KF233801T
    Certified Pre-Owned: No
    Listed since: 04-12-2024

  • 132,420 miles
    No accidents, 1 Owner, Corporate fleet vehicle
    ClearShift (21 mi away)
    • 4WD
    • Bluetooth connectivi...
    • An integrated traile...
    • audio control Steeri...
    • Brake assist system
    Close

    Located in Highlands Ranch, CO / 21 miles away from Aurora, CO

    Step up your game with the robust 2019 Chevrolet Silverado 2500HD LT, a powerhouse designed for both work and adventure. Dressed in striking Summit Wh...

    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: 1GC1KSEG1KF248029
    Stock: JV248029
    Certified Pre-Owned: No
    Listed since: 04-26-2024

  • 185,664 miles
    No accidents, 2 Owners, Personal use only
    8'2” Bed, 6L, 8cyl
    Berkenkotter Motors - Brighton (18 mi away)
    • AWD/4WD
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    • Trip Computer
    Close

    Located in Brighton, CO / 18 miles away from Aurora, CO

    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: 1GC2KUEG3HZ249819
    Stock: T15462
    Certified Pre-Owned: No
    Listed since: 12-15-2023

  • 112,590 miles
    1 Accident, 2 Owners, Corporate fleet vehicle
    8'2” Bed, 6L, 8cyl
    DYE Enterprise (23 mi away)
    Home delivery*
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • Trip Computer
    Close

    Located in Wheat Ridge, CO / 23 miles away from Aurora, CO

    If you need a crew cab 4x4 3/4 ton is Chevrolet K2500 Silverado runs and great. With a long box and room for 6 adults this makes this truck a great tr...

    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: 1GC1KREG8KF103109
    Stock: 33847
    Certified Pre-Owned: No
    Listed since: 08-11-2023

  • $38,995
    great price
    $3,065 below market
    112,973 miles
    No accidents, 3 Owners, Corporate fleet vehicle
    6'7” Bed, 6.6L, 8cyl
    You Sell Auto Montrose (194 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Montrose, CO / 194 miles away from Aurora, CO

    2018 CHEVROLET SILVERADO 2500 HD Crew Cab LTZ 4WDDURAMAX DIESELALLISON TRANSMISSIONTOW PKG.EXHAUST BRAKECAMPERSHELLRUNNING BOARDSGRILL GUARDCUSTOM RIM...

    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: 1GC1KWEY6JF121792
    Stock: 7648
    Certified Pre-Owned: No
    Listed since: 11-30-2023

  • $29,389
    fair price
    $1,342 below market
    115,490 miles
    No accidents, 1 Owner, Personal use only
    8'2” Bed, 6.6L, 8cyl
    Johnson Auto Plaza (15 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in Brighton, CO / 15 miles away from Aurora, CO

    **Accident-Free Carfax, 1-Owner** **Silverado 2500HD Work Truck Double Cab 4WD** *6.6L Gasoline V8* Visit www.johnsonautoplaza.com for more informa...

    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: 1GC5YLE7XLF280940
    Stock: F485352A
    Certified Pre-Owned: No
    Listed since: 03-12-2024

  • $29,389
    good price
    $2,022 below market
    109,758 miles
    No accidents, 1 Owner, Personal use only
    8'2” Bed, 6.6L, 8cyl
    Johnson Auto Plaza (15 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Tire Pressure Warnin...
    • USB Inputs
    Close

    Located in Brighton, CO / 15 miles away from Aurora, CO

    **Accident-Free Carfax, 1-Owner** **Chevrolet Silverado 2500HD WT Double Cab 4WD** *6.6L Gasoline Engine* *Cruise Control* Visit www.johnsonautoplaz...

    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: 1GC5YLE73LF274946
    Stock: F485456A
    Certified Pre-Owned: No
    Listed since: 02-28-2024

  • New Listing
    $29,788
    good price
    $2,229 below market
    168,939 miles
    No accidents, 2 Owners, Personal use only
    6'7” Bed, 6.6L, 8cyl
    Stevinson Chevrolet (26 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Power Driver Seat
    Close

    Located in Lakewood, CO / 26 miles away from Aurora, CO

    2018 Chevrolet Silverado 2500HD LT Allison 1000 6-Speed Automatic, 4WD, Black Cloth.We're very proud of being in business for over a half-century of 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: 1GC1KVEY3JF150127
    Stock: SCLL240117A
    Certified Pre-Owned: No
    Listed since: 04-30-2024

  • $32,498
    good price
    $2,446 below market
    132,860 miles
    1 Accident, 2 Owners, Personal use only
    6'7” Bed, 6.6L, 8cyl
    Mountain States Toyota (17 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Tire Pressure Warnin...
    Close

    Located in Denver, CO / 17 miles away from Aurora, CO

    Come see this 2018 Chevrolet Silverado 2500HD LT. Its Automatic transmission and Turbocharged Diesel V8 6.6L/403 engine will keep you going. This Chev...

    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: 1GC1KVEY3JF188229
    Stock: IJF188229
    Certified Pre-Owned: No
    Listed since: 04-03-2024

  • $42,294
    fair price
    $1,906 below market
    108,148 miles
    No accidents, 1 Owner, Personal use only
    6'7” Bed, 6.6L, 8cyl
    Grand Valley Auto Lakewood (23 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Lakewood, CO / 23 miles away from Aurora, CO

    CARFAX One-Owner. Clean CARFAX. Odometer is 857 miles below market average! Black 2016 Chevrolet Silverado 2500HD LTZ 4D Crew Cab 4WD Duramax 6.6L V8 ...

    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: 1GC1KWE89GF196527
    Stock: G4948
    Certified Pre-Owned: No
    Listed since: 04-03-2024

  • Price Drop
    $28,795
    fair price
    $778 below market
    111,519 miles
    No accidents, 1 Owner, Corporate fleet vehicle
    8'2” Bed, 6L, 8cyl
    Mike Maroone Chevrolet South (65 mi away)
    • AWD/4WD
    • Back-up camera
    • Tire Pressure Warnin...
    • Trip Computer
    • Rear Bench Seats
    Close

    Located in Colorado Springs, CO / 65 miles away from Aurora, CO

    Recent Arrival! CARFAX One-Owner. Clean CARFAX. Work Truck 4WD Odometer is 4580 miles below market average!https://www.kbb.com/kbbreport/mui5u

    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: 1GC1KUEG5JF257438
    Stock: OS257438
    Certified Pre-Owned: No
    Listed since: 04-23-2024

Showing 1 - 21 out of 413 listings

Consumer Reviews for the Chevrolet Silverado 2500HD

Read recent reviews for the Chevrolet Silverado 2500HD
Overall Consumer Rating
3.6 out of 5 stars29 Reviews
Write a vehicle reviewSee all 29 reviews
  • 5 star
    (45%)
  • 4 star
    (17%)
  • 3 star
    (7%)
  • 2 star
    (17%)
  • 1 star
    (14%)
5 out of 5 stars

Needed HD truck to haul travel trailer

The Bear, 06/21/2018
2018 Chevrolet Silverado 2500HD LTZ 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)
I have about 1100 miles on an LTZ crew cab with the Duramax package. Bought it to pull my 6800# travel trailer. Tows wonderfully. Diesel is the right powertrain for towing. Can cruise at highway speed so I don't become a rolling road block. Around town the ride reminds you that this is a heavy duty truck but no complaints as it is very comfortable on highway and when towing. Having … enough truck makes trips enjoyable not a 'white knuckle' experience. The LTZ interior is comfortable for my wife and I, both retirement age. This is the right truck for our intended purpose. Tows well, runs with traffic on the highway, and comfortable. Just what we needed. Mileage drops from 17 around town to 10.5 when towing. Wish DEF tank fill was easier to access and cheapy DEF refill spouts didn't leak. Hate spills/dribbles in new engine bay.
Report abuse

Used 2018 Chevrolet Silverado 2500HD in Aurora, CO Values

Estimated values
2018 Chevrolet Silverado 2500HD LT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$24,792$27,990$30,834
Clean$24,190$27,302$30,066
Average$23,186$26,154$28,785
Rough$21,882$24,661$27,119

The average list price of a used 2018 Chevrolet Silverado 2500HD in Aurora, Colorado is $36,616. The average mileage on a used Chevrolet Silverado 2500HD 2018 for sale in Aurora, Colorado is 104,422. Based on the average mileage of 104,422 for used 2018 Chevrolet Silverado 2500HD for sale in Aurora, CO 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 Chevrolet Silverado 2500HD 2018 in Aurora, Colorado to be $23,186.

Select Buying Experience
Filters
Skip to Results

Location

Search radius200 miles
Search radius

Make & Model

make

model

Year

to
Year

Condition

Price & Payment

413 cars
|
$44,873 avg. price
$
to
$
Price

Price Rating

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

Vehicle Listing Details


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