6 Speed Automatic Mechanic / Utility / Service Trucks For Sale

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2018 Kenworth T370 Mechanic / Service Truck - Cummins, 350HP, 6 Speed Allison Rds Automatic

$159,500 USD

2018 Kenworth T370 Mechanics Truck, Paccar PX9 8.9L Turbo Diesel Engine, 350 HP, Engine Brake, Allison 6 Speed Automatic Transmission, 171,529 ECM Verified Miles 6,554 ECM Verified Engine...

Condition	Used
Usage	6,554 Hours
Duty Class	Heavy Duty Service Truck
Horse Power	350 HP
Engine Model	Cummins ISL
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	21,000 lb 5.29 ratio
Stock Number	T17884D
MLS Number	14105541
Category	Mechanic / Utility / Service Trucks
Last Updated	1/22/2026
Location	Denver, CO, US
Sold By	DTI Trucks

2023 Ford F-250 Mechanic / Service Truck - 6.8L TRITON V10, 362HP, 6 Speed Automatic

$59,500 USD

2023 Ford F250XL Service/Utility Truck, 6.8L V8 Engine, 10 Speed Automatic Torqshift Transmission, 10,000 GVWR, 4,800 lbs Front Axle, 6,340 Rear Axle, Four Wheel Drive (4X4), Auto Transfer...

Condition	Used
Usage	21,393 Miles
Duty Class	Light Duty Service Truck
Horse Power	362 HP
Engine Model	Ford 6.8L TRITON V10
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	6,340 lb
Stock Number	T17371M
MLS Number	13985379
Category	Mechanic / Utility / Service Trucks
Last Updated	1/22/2026
Location	Wheat Ridge, CO, US
Sold By	DTI Trucks

2023 Chevrolet Silverado 3500 Mechanic / Service Truck - 400HP, 6 Speed Automatic

$58,500 USD

023 Chevrolet 3500HD Service/Utility Truck, Gas, 4x4 Powertrain Chassis: 5604 miles 6.6L V8 with 400HP/464lbs-ft Torque 6 Speed Automatic Transmission | 4x4 Hydraulic Brakes, Spring...

Condition	Used
Usage	5,604 Miles
Duty Class	Light Duty Service Truck
Bed Length	8 ft.
Horse Power	400 HP
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	7,250 lb
Stock Number	T17704M
MLS Number	13951241
Category	Mechanic / Utility / Service Trucks
Last Updated	1/22/2026
Location	Wheat Ridge, CO, US
Sold By	DTI Trucks

2021 Ford F-350 Mechanic / Service Truck - 350HP, 6 Speed Automatic

$54,500 USD

2021 Ford F350 Service/Utility Truck, 7.3L V8 Engine, 6 Speed Automatic Torqshift Transmission, 11,300 GVWR, 4,800 lbs Front Axle, 6,780 lbs Rear Axle, Four Wheel Drive (4X4), Auto Transfer...

Condition	Used
Usage	37,908 Miles
Duty Class	Light Duty Service Truck
Horse Power	350 HP
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	6,780 lb
Stock Number	T17050M
MLS Number	13409789
Category	Mechanic / Utility / Service Trucks
Last Updated	1/22/2026
Location	Wheat Ridge, CO, US
Sold By	DTI Trucks

(833) 690-___ SHOW
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2005 Peterbilt 335 Mechanic / Service Truck - IMT 6025 Dominator II Mechanic Body

$75,000 USD

2005 Peterbilt 335 Mechanics Truck – Fully Equipped Salt Lake City, UT Heavy-duty, turnkey mechanics truck ready to work. Truck Details:, , 2005 Peterbilt 335, , CAT C7 reman engine –...

Condition	Used
Usage	32,607 Hours
Duty Class	Heavy Duty Service Truck
Upfit Type	Mechanic Body
Upfit Make	IMT
Upfit Model	Dominator II
Bed Length	14 ft.
Horse Power	275 HP
Engine Model	Caterpillar 3126/C7
Emission Rating	Tier 3
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Door Type	Swing
Outriggers	Yes
Winch	Yes
MLS Number	14062216
Category	Mechanic / Utility / Service Trucks
Last Updated	1/29/2026
Location	Salt Lake City, UT, US
Sold By	Salt Lake Truck Wash & Detail

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2022 Chevrolet Silverado 5500HD Mechanic / Service Truck - Duramax, 350HP, 6 Speed Automatic

Contact for price

2022 Chevrolet 5500 HD 4X4 Mechanics Trucks, 6.6L Duramax Diesel Engine, 350 HP, Exhaust Brake, Allison 6 Speed Automatic Transmission, Only 40,934 Miles ONLY 2,608 Engine Hours, 19.5K GVWR...

Condition	Used
Usage	2,608 Hours
Duty Class	Medium Duty Service Truck
Horse Power	350 HP
Engine Model	Duramax L5P 6.6L V8
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	15,000 lb
Stock Number	T17990D
MLS Number	14059504
Category	Mechanic / Utility / Service Trucks
Last Updated	1/20/2026
Location	Denver, CO, US
Sold By	DTI Trucks

2019 Ford F-350 Super Duty 9' Knapheide 6108D54-S Service Utility Truck Body, Crew Cab, Diesel

$39,995 USD

FOR SALE: 2019 FORD F-350 SUPER DUTY – 9’ KNAPHEIDE SERVICE UTILITY TRUCK (CREW CAB 4X4, DIESEL), The 2019 Ford F-350 Super Duty Crew Cab is a powerful and versatile service truck built to...

Condition	Used
Usage	7,025 Hours
Duty Class	Light Duty Service Truck
Upfit Type	Service Utility Truck Body
Upfit Make	Knapheide
Upfit Model	6108D54-2
Bed Length	9 ft.
Horse Power	330 HP
Engine Model	Ford POWERSTROKE
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	10,040 lb
Stock Number	F96442
MLS Number	13964522
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

2019 Ford F-550 11' Service Body w/ 6,000 lbs. Auto Crane HC6 Welder / Hydraulic Compressor

$82,995 USD

For Sale: 2019 Ford F-550 Super Duty Mechanic Truck with Crane – Auto Crane HC-6, Welder, and Air Compressor This 2019 Ford F-550 Super Duty is a fully equipped mechanic’s service truck,...

Condition	Used
Usage	7,484 Hours
Duty Class	Medium Duty Service Truck
Upfit Type	Welder / Mechanics Body / Crane Truck Body
Upfit Make	Auto Crane
Upfit Model	HC-6
Bed Length	11 ft.
Horse Power	330 HP
Engine Model	Ford 6.7L POWER STROKE
Drivetrain	4x2
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	14,706 lb 4.88 ratio
Outriggers	Yes
Max Reach	20.5 ft
Lift Capacity	6000.00 Lb
Stock Number	F06324A
MLS Number	13584300
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

2026 Peterbilt 536 / Summit 10620 Crane / 10k lbs. / Welder / Compressor / NON-CDL

$209,995 USD

FOR SALE: 2026 PETERBILT 536 – SUMMIT 10620 MECHANIC TRUCK WITH CRANE, WELDER, AND COMPRESSOR The 2026 Peterbilt 536 is a premium medium-duty service truck designed for fleet maintenance,...

Condition	Used
Usage	284 Miles
Duty Class	Medium Duty Service Truck
Upfit Type	Welder / Mechanics Body / Crane Truck Body
Upfit Make	SUMMIT TRUCK BODIES
Upfit Model	10620
Bed Length	13 ft.
Horse Power	260 HP
Engine Model	Paccar PX7
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	18,000 lb
Outriggers	Yes
Max Reach	20.9 ft
Lift Capacity	10000.00 Lb
Stock Number	785351A
MLS Number	13807644
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

2017 RAM 3500 Mechanic / Service Truck - Dodge, 410HP, 6 Speed Automatic

$42,500 USD

2017 Ram 3500 Service/Utility Truck, Gas, Crew Cab, 4x4 Powertrain Chassis: 56,263 miles, 6.4L Hemi with 410HP/429 lbs-ft, Automatic Transmission, Hydraulic Brakes, Spring Suspension, GVWR:...

Condition	Used
Usage	56,263 Miles
Duty Class	Light Duty Service Truck
Horse Power	410 HP
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	9,850 lb
Stock Number	T17535M
MLS Number	14094846
Category	Mechanic / Utility / Service Trucks
Last Updated	1/22/2026
Location	Wheat Ridge, CO, US
Sold By	DTI Trucks

(724) 243-___ SHOW
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2018 Kenworth T270 Mechanic / Service Truck - Cummins, 300HP, 6 Speed Allison Rds Automatic

$89,900 USD

Ready to work mechanic's truck!, DOT'd PM'd, Freshly detailed!, Cummins power and Allison Transmission!!,

Condition	Used
Usage	8,181 Hours
Duty Class	Medium Duty Service Truck
Horse Power	300 HP
Engine Model	Cummins B6.7
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Stock Number	285164
MLS Number	14068012
Category	Mechanic / Utility / Service Trucks
Last Updated	1/22/2026
Location	Smithfield, PA, US
Sold By	Hunter Truck

(844) 714-___ SHOW
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2018 Kenworth T370 Mechanic / Service Truck - Paccar, 300HP, 6 Speed Allison Rds Automatic

$124,500 USD

Stellar TMax service body- 14', Remote control, Stellar 12630 crane- 30 FT, 12,000 lb lift, 65R air compressor- PTO driven, Hydraulic outriggers, Allison 3500RDS transmission, Paccar PX9...

Condition	Used
Usage	9,645 Hours
Duty Class	Heavy Duty Service Truck
Bed Length	14 ft.
Horse Power	300 HP
Engine Model	Paccar PX9
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb 5.57 ratio
Stock Number	6923
MLS Number	13916478
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Boise, ID, US
Sold By	Diesel Depot

(724) 243-___ SHOW
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2016 Freightliner M2 106 Mechanic / Service Truck - Cummins, 240HP, 6 Speed Allison Rds Automatic

$69,900 USD

11' Service Body, Miller ENPAK Rotary Screw Air Compressor, IMT 8600-22 Crane with Remote, Very nice used unit, Serviced and DOT'D,

Condition	Used
Usage	15,925 Hours
Duty Class	Medium Duty Service Truck
Bed Length	11 ft.
Horse Power	240 HP
Engine Model	Cummins B6.7
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	17,500 lb 5.88 ratio
Stock Number	281432
MLS Number	13857519
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Smithfield, PA, US
Sold By	Hunter Truck

(855) 804-___ SHOW
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2018 International DuraStar 4300 Mechanic / Service Truck - Cummins, 260HP, 6 Speed Allison Rds Automatic

$52,500 USD

2018 International 4300 --- Single Axle, ISB 6.7 Cummins 260 HP, Allison Automatic 6 Speed, 6.14 Ratio, 13,000 Front Axle, 20,000 Rear Axle, 174" Wheelbase, Axle Lock, Pintle Hitch, 10'...

Condition	Used
Usage	41,930 Miles
Duty Class	Heavy Duty Service Truck
Horse Power	260 HP
Engine Model	Cummins ISB
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	20,000 lb 6.14 ratio
Stock Number	435450
MLS Number	13512381
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Chatham, VA, US
Sold By	Atkinson Truck Sales

(844) 305-___ SHOW
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2018 International DuraStar 4300 Mechanic / Service Truck - Cummins, 260HP, 6 Speed Automatic

$52,500 USD

Single Axle, 10' Adkins Service Body, Effer Knuckle Boom Model 135/3S (8,075 Capacity), 6.7L Cummins 260 HP, Allison Automatic 6 Speed, 6.14 Ratio, Spring Suspension, 13K FA, 20K RA, 33K...

Condition	Used
Usage	3,449 Hours
Duty Class	Heavy Duty Service Truck
Bed Length	10 ft.
Horse Power	260 HP
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	20,000 lb 6.14 ratio
Stock Number	JL435450
MLS Number	13512266
Category	Mechanic / Utility / Service Trucks
Last Updated	1/16/2026
Location	Chatham, VA, US
Sold By	J&J Truck Sales

(855) 929-___ SHOW
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2017 RAM 5500 Regular Cab 4X4 with Altec 11 Ft Fiberglass Mechanic Service Utility Body

$32,000 USD

Chassis Specs:, 2017 RAM 5500 4X4 Regular Cab Gas 6.4L HEMI Engine Automatic 6-Speed AISIN Transmission A/C, Power Windows and Locks Remote Keyless Entry Power Trailer Towing Mirrors...

Condition	Used
Usage	3,375 Hours
Duty Class	Medium Duty Service Truck
Upfit Type	Service Utility Truck Body
Upfit Make	Altec
Bed Length	11 ft.
Engine Model	Dodge
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	13,500 lb 4.88 ratio
Liftgate	Yes
Stock Number	V#671
MLS Number	14089598
Category	Mechanic / Utility / Service Trucks
Last Updated	1/14/2026
Location	Duluth, MN, US
Sold By	Equipment Rental Company

(855) 984-___ SHOW
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2025 Kenworth T380 Mechanic / Service Truck - Paccar, 325HP, 6 Speed Allison Rds Automatic

$239,095 USD

Transfer this unit to your nearest Maryland/Delaware location at no additional cost – Baltimore, Bel Air, Dover, Landover, Mardela Springs, Upper Marlboro, or Westminster. Contact us for...

Condition	New
Usage	1,075 Miles
Duty Class	Heavy Duty Service Truck
Bed Length	14 ft.
Horse Power	325 HP
Engine Model	Paccar PX7
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	21,000 lb 6.17 ratio
Stock Number	KN180807
MLS Number	14088002
Category	Mechanic / Utility / Service Trucks
Last Updated	1/14/2026
Location	Rosedale, MD, US
Sold By	All Roads Trucks

2014 Freightliner Business Class M2-106 Enclosed Utility, Cummins 6.7L, Allison Auto, Well Maintained, Ready for Work

$31,995 USD

FOR SALE – 2014 FREIGHTLINER M2-106 ENCLOSED UTILITY / SERVICE TRUCK, For sale is a professionally outfitted enclosed utility truck designed for mechanical service operations, field...

Condition	Used
Usage	7,956 Hours
Duty Class	Heavy Duty Service Truck
Upfit Type	High Roof Enclosed Service Truck Body
Upfit Make	Adkins
Upfit Model	15094T74
Bed Length	12.6
Horse Power	250 HP
Engine Model	Cummins ISB
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb
Stock Number	FV8584
MLS Number	14029346
Category	Mechanic / Utility / Service Trucks
Last Updated	1/12/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

(855) 984-___ SHOW
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2025 Kenworth T380 Mechanic / Service Truck - Paccar, 325HP, 6 Speed Allison Rds Automatic

$239,095 USD

Transfer this unit to your nearest Maryland/Delaware location at no additional cost – Baltimore, Bel Air, Dover, Landover, Mardela Springs, Upper Marlboro, or Westminster. Contact us for...

Condition	New
Usage	960 Miles
Duty Class	Heavy Duty Service Truck
Bed Length	14 ft.
Horse Power	325 HP
Engine Model	Paccar PX7
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	21,000 lb 6.17 ratio
Stock Number	KN180808
MLS Number	13703381
Category	Mechanic / Utility / Service Trucks
Last Updated	1/11/2026
Location	Westminster, MD, US
Sold By	All Roads Trucks

2024 RAM 5500 Tradesman Mechanic / Service Truck - 6 Speed Automatic

$169,895 USD

New 2024 Ram 5500 Crew Cab 4x4 Diesel with an 11' Reading RM45 Mechanics Body with Liftmoore 8045 8K Crane Mechanics work truck for sale. The sale price includes the crane truck body and...

Condition	New
Usage	39 Miles
Duty Class	Medium Duty Service Truck
Transmission	6 Speed Automatic
Stock Number	ADRB240688
MLS Number	13660062
Category	Mechanic / Utility / Service Trucks
Last Updated	1/11/2026
Location	Avondale, AZ, US
Sold By	Larry H. Miller Ford - Mesa

2024 RAM 5500 Tradesman Mechanic / Service Truck - 6 Speed Automatic

$163,995 USD

New 2024 Ram 5500 Chassis Cab 11' Knapheide KMT1 Mechanics Body with Stellar 8630 8K Crane work truck for sale. The sale price includes the mechanics truck body and crane. Stock#...

Condition	New
Usage	2 Miles
Duty Class	Medium Duty Service Truck
Transmission	6 Speed Automatic
Stock Number	ADRB240989
MLS Number	13621816
Category	Mechanic / Utility / Service Trucks
Last Updated	1/8/2026
Location	Avondale, AZ, US
Sold By	Larry H. Miller Ford - Mesa

2024 RAM 5500 Tradesman Mechanic / Service Truck - 6 Speed Automatic

$163,995 USD

New 2024 Ram 5500 Reg Cab 4x4 Diesel Tradesman with an 11' Knapheide KMT1 Mechanics Body with Stellar 8630 8K Crane work truck for sale. The sale price includes the mechanics truck body and...

Condition	New
Usage	47 Miles
Duty Class	Medium Duty Service Truck
Transmission	6 Speed Automatic
Stock Number	ADRB240988
MLS Number	13599440
Category	Mechanic / Utility / Service Trucks
Last Updated	1/15/2026
Location	Avondale, AZ, US
Sold By	Larry H. Miller Ford - Mesa

2024 RAM 5500 Tradesman Mechanic / Service Truck - 6 Speed Automatic

$83,995 USD

====== For Sale: New 2024 Ram 5500 Crew Cab 4x4 Diesel 84CA -- 11' Crysteel E-Tipper Low Side Dump Truck ======Stock #ADRB240861==== Heavy-Duty Power for Tough Jobs ====This 2024 Ram 5500HD...

Condition	New
Usage	25 Miles
Duty Class	Medium Duty Service Truck
Transmission	6 Speed Automatic
Stock Number	ADRB240861
MLS Number	13383995
Category	Mechanic / Utility / Service Trucks
Last Updated	1/8/2026
Location	Avondale, AZ, US
Sold By	Larry H. Miller Ford - Mesa

(844) 305-___ SHOW
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2019 Kenworth T370 Mechanic / Service Truck - Paccar, 300HP, 6 Speed Automatic

$129,900 USD

PX7 PACCAR 300 HP, Allison Automatic 6 Speed, 5.57 Ratio, 12,000 Front Axle, 21,000 Rear Axle, 155" Wheelbase, 12' 11" Bridge, Spring, Air Brake, Exhaust Brake, 11' Stellar Body, Steel...

Condition	Used
Usage	213,761 Miles
Duty Class	Heavy Duty Service Truck
Bed Length	11 ft.
Horse Power	300 HP
Engine Model	Paccar PX7
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb 5.57 ratio
Stock Number	KM259379
MLS Number	14074951
Category	Mechanic / Utility / Service Trucks
Last Updated	1/7/2026
Location	Chatham, VA, US
Sold By	J&J Truck Sales