Tandem Axle Sleeper Semi Trucks For Sale

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

$48,750 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 615,233 miles, 455HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission. Come see today.

Condition	Used
Usage	615,300 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	394247
MLS Number	14144556
Category	Sleeper Semi Trucks
Last Updated	4/12/2026
Location	Milwaukee, WI, US
Sold By	Penske Used Trucks

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

$67,250 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 466,464 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	466,464 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	394169
MLS Number	14015325
Category	Sleeper Semi Trucks
Last Updated	4/8/2026
Location	Akron, OH, US
Sold By	Penske Used Trucks

2022 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 11 Speed Endurant Automatic

$52,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	486,903 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	11 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.15 ratio
Stock Number	L01747-DELIVERY 2 U
MLS Number	14255361
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

2022 Peterbilt 389 Sleeper Semi Truck - Flat Top Sleeper, Cummins 605HP, Manual

$134,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** MANUAL, SLIDING 5TH WHEEL, ENGINE BRAKE, SUSPENSION AIR DUMP, LIQUID DEF Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!!...

Condition	Used
Usage	464,095 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	605 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	Manual
Sleeper Type	Flat Top Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	N15388-DELIVERY 2 U
MLS Number	14244584
Category	Sleeper Semi Trucks
Last Updated	3/28/2026
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

2021 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$52,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	398,415 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	L01729-DELIVERY 2 U
MLS Number	14236701
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

2021 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$52,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	392,870 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	L01728-DELIVERY 2 U
MLS Number	14236696
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

2021 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$49,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	429,814 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	L01726-DELIVERY 2 U
MLS Number	14236663
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

2021 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$49,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	430,509 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	L01724-DELIVERY 2 U
MLS Number	14234438
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

(833) 637-___ SHOW
NUMBERCall Seller

2007 Peterbilt 379EXHD Sleeper Semi Truck - 40" Raised Roof Sleeper, Cummins 475HP, 13 Speed Manual

$59,900 USD

2007 Peterbilt 379 with 48 inch sleeper, ISX 475 hp, 13 speed trans, 1.2 mil miles, recent overhaul, 52000 GVW, 3.55 ratio, 266 wb, flex air susp, new paint,

Condition	Used
Usage	11,184 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	13 Speed Manual
Sleeper Type	Raised Roof Sleeper
Sleeper Size	40"
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
MLS Number	14234408
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	WINGER, MN, US
Sold By	Lucken Trucks and Parts

2021 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, Automatic

$48,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	444,226 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	2.64 ratio
Stock Number	L01715-DELIVERY 2 U
MLS Number	14229618
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

2021 Volvo VNL64760 Sleeper Semi Truck - 70" Integral Sleeper, 455HP, 12 Speed Automatic

$65,000 USD

Used 2021 Volvo VNL64760 Sleeper Semi Truck for sale, 514,455 miles, 455HP D13 diesel engine, 12-speed automatic transmission, 70" integral sleeper, tandem rear axle, air ride suspension....

Condition	Used
Usage	519,565 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	383029
MLS Number	14099157
Category	Sleeper Semi Trucks
Last Updated	4/5/2026
Location	Sun Valley, CA, US
Sold By	Penske Used Trucks

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop $73,500 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck with 72" integral sleeper, 455 HP DD15AT diesel engine, 12-speed automatic Detroit transmission, tandem rear axle, air ride suspension....

Condition	Used
Usage	427,785 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	385441
MLS Number	14220385
Category	Sleeper Semi Trucks
Last Updated	4/4/2026
Location	Arlington, TX, US
Sold By	Penske Used Trucks

2020 International LT Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 400HP, 11 Speed Endurant Automatic

$32,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS, LIQUID DEF Se Habla Espanol! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 6 DAYS A WEEK!!!! Disclaimer:,...

Condition	Used
Usage	693,861 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x2
Transmission	11 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.31 ratio
Stock Number	N15367-DELIVERY 2 U
MLS Number	14167191
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

$63,250 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck with 72" integral sleeper, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, tandem rear axle, 220-gal fuel capacity...

Condition	Used
Usage	548,492 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	385254
MLS Number	14159409
Category	Sleeper Semi Trucks
Last Updated	4/2/2026
Location	Torrance, CA, US
Sold By	Penske Used Trucks

2020 International LT Sleeper Semi Truck - 71" Mid Roof Sleeper, Cummins 400HP, 11 Speed Endurant Automatic

$32,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS, LIQUID DEF Se Habla Espanol! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 6 DAYS A WEEK!!!! Disclaimer:,...

Condition	Used
Usage	696,050 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x2
Transmission	11 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	71"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.31 ratio
Stock Number	N15364-DELIVERY 2 U
MLS Number	14165145
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

2020 International LT Sleeper Semi Truck

$34,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** ****8 NEW TIRES!!!****, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, AIR RIDE, Se Habla Español! NO CREDIT?...

Condition	Used
Usage	689,630 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x2
Transmission	Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	71"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.31 ratio
Stock Number	L01704-8 NEW TIRES
MLS Number	14164867
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

(833) 781-___ SHOW
NUMBERCall Seller

2022 Freightliner Cascadia Sleeper Semi Truck - 48" Extra-Tall Roof, Detroit, Automatic, Optimzed Idle, MirrorEye Equipped

$66,500 USD

Condition	Used
Usage	313,924 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15GHG21
Drivetrain	6x4
Transmission	Detroit DT12 Automatic
Sleeper Type	Extra Tall Sleeper
Sleeper Size	48"
Rear Axle	Tandem Axle
Rear End	2.28 ratio
Stock Number	20941
MLS Number	14270520
Category	Sleeper Semi Trucks
Last Updated	4/7/2026
Location	Charlotte, NC, US
Sold By	Schneider

2020 International LT Sleeper Semi Truck - 71" Raised Roof Sleeper, Cummins 400HP, Automatic

$41,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, CUMMINS X15, DEF, ENGINE BRAKE, SLEEPER WINDOW, SLIDING 5TH WHEEL, OFF ROAD, AIR RIDE, PDL LOCK, 5TH WHEEL UNLOCK...

Condition	Used
Usage	496,137 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	71"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.64 ratio
Stock Number	L01674-DELIVERY 2 U
MLS Number	14120298
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

(888) 853-___ SHOW
NUMBERCall Seller

2017 Peterbilt 579 Sleeper Semi Truck - Mid Roof Sleeper, Paccar 455HP, 10 Speed Amt

$34,900 USD

Paccar MX13 455 hp, Eaton FAOM-15810S-EP3 10 speed auto, full locking rears, air ride with suspension dump, Gardner/Denver Wet Kit, A/S 5th wheel, LoPro 22.5 tires on aluminum wheels, dual...

Condition	Used
Usage	711,590 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	10 Speed Automated
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	1326
MLS Number	14109063
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	New Salem, ND, US
Sold By	Pedigree Truck and Trailer Sales, Inc.

(855) 725-___ SHOW
NUMBERCall Seller

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 505HP, 13 Speed Ultrashift Manual

$69,900 USD

The 2022 Freightliner Cascadia 126 is a Class 8 sleeper tractor built for efficiency, reliability, and driver comfort, making it an excellent choice for regional and long-haul operations Key...

Condition	Used
Usage	449,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	13 Speed Ultrashift Manual
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	2600
MLS Number	14077926
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Phoenix, AZ, US
Sold By	TCI Transportation

(855) 725-___ SHOW
NUMBERCall Seller

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 505HP, 13 Speed Ultrashift Manual

$69,900 USD

The 2022 Freightliner Cascadia 126 is a Class 8 sleeper tractor built for efficiency, reliability, and driver comfort, making it an excellent choice for regional and long-haul operations Key...

Condition	Used
Usage	395,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	13 Speed Ultrashift Manual
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	2610
MLS Number	14077832
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Phoenix, AZ, US
Sold By	TCI Transportation

2023 Peterbilt 579 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

$49,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC!!! DEF, ENGINE BRAKE, SLIDING 5TH WHEEL, MINI-FRIDGE,, Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7...

Condition	Used
Usage	626,843 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	N15252-DELIVERY 2 U
MLS Number	14059419
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(855) 725-___ SHOW
NUMBERCall Seller

2023 Peterbilt 389 Sleeper Semi Truck - 70" Mid Roof Sleeper, Paccar 550HP, 13 Speed Ultrashift Manual

Contact for price

The 2023 Peterbilt 389 is a Class 8 heavy-duty truck built for long-haul performance, reliability, and driver comfort, making it a standout choice for fleets and owner-operators alike Key...

Condition	Used
Usage	331,260 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	550 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	13 Speed Ultrashift Manual
Sleeper Type	Mid Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
MLS Number	14001763
Category	Sleeper Semi Trucks
Last Updated	3/27/2026
Location	Phoenix, AZ, US
Sold By	TCI Transportation

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

$34,750 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 805,355 miles, 505 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle....

Condition	Used
Usage	805,379 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	356793
MLS Number	13907128
Category	Sleeper Semi Trucks
Last Updated	4/12/2026
Location	La Porte, IN, US
Sold By	Penske Used Trucks