Used 6 Speed Mechanic / Utility / Service Trucks For Sale by Dealerships

26 - 50 of 107 listings

2021 Chevrolet 5500 Mechanic / Service Truck - Gm, 350HP

$84,000 USD

2021 Chevrolet 5500 4x4 Load King Voyager Service Truck, Duramax 6.6L Diesel Engine, 134,591 Miles, Engine Brake, Allison 1750 RDS (Rugged Duty Series) 6 Speed Automatic Overdrive...

Condition	Used
Usage	134,591 Miles
Horse Power	350 HP
Engine Model	6.6L V8, TURBO DURAMAX
Drivetrain	4x4
Transmission	6 Speed
Suspension	Spring
Rear End	15,500 lb
Stock Number	MH661779
MLS Number	14295232
Category	Mechanic / Utility / Service Trucks
Last Updated	5/9/2026
Location	Hooksett, NH, US
Sold By	Custom Truck One Source

(844) 476-___ SHOW
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2016 Freightliner M2 106 Mechanic / Service Truck - Cummins, 240HP, 6 Speed Allison Rds Automatic

Price Drop $57,900 USD

11' Service Body, Miller ENPAK Rotary Screw Air Compressor, IMT 8600-22 Crane with Remote, Very nice used unit, Serviced and DOT'D, **ALL USED TRUCKS ARE SOLD AS IS WHERE IS**,

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	5/9/2026
Location	Smithfield, PA, US
Sold By	Hunter Truck

(724) 243-___ SHOW
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2014 Peterbilt 337 Mechanic / Service Truck - Paccar, 260HP, 6 Speed Manual

Price Drop $79,900 USD

IMT 14' Service Truck on a Peterbilt 337 Chassis. Service body has been fully reconditioned and painted Truck was fully DOT'd and PM'd in our Peterbilt Shop. Can send repair order over on...

Condition	Used
Usage	19,435 Hours
Duty Class	Heavy Duty Service Truck
Horse Power	260 HP
Engine Model	Paccar PX9
Drivetrain	4x2
Transmission	6 Speed Manual
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb 4.11 ratio
Stock Number	246937
MLS Number	13813906
Category	Mechanic / Utility / Service Trucks
Last Updated	5/9/2026
Location	Smithfield, PA, US
Sold By	Hunter Truck

(724) 243-___ SHOW
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2018 Kenworth T370 Conventional Day Cab, Mechanic / Service Truck.

$134,400 USD

*Exceptional values available until May 29, 2026.* Pricing is subject to modification. Dealer Doc Fee: $ 290, Sales tax and licensing fees are applicable within the state of Utah. 2018...

Condition	Used
Usage	55,566 Miles
Duty Class	Heavy Duty Service Truck
Bed Length	14 ft.
Horse Power	300 HP
Engine Model	Paccar PX-9
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Leaf Springs
Rear Axle	Single Axle
Rear End	21,000 lb 5.57 ratio
Outriggers	Yes
Max Reach	28 ft
Lift Capacity	10000.00 Lb
Lift Capacity	5.00 Ton
Winch	Yes
Stock Number	210993
MLS Number	14284707
Category	Mechanic / Utility / Service Trucks
Last Updated	5/15/2026
Location	Midvale, UT, US
Sold By	MTS Utah, Inc.

(844) 445-___ SHOW
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2015 FORD F550 SD XL Mechanic / Flatbed, Storage Comartments, Under Body Compartments, Knuckle-Boom Crane.

$22,500 USD

Special Offer! Exceptional values available until May 15, 2026. Pricing is subject to modification. Dealer Doc Fee: $ 290, Sales tax and licensing fees are applicable within the state of...

Condition	Used
Usage	226,677 Miles
Duty Class	Medium Duty Service Truck
Bed Length	11 ft.
Horse Power	440 HP
Engine Model	Ford Power Stroke
Drivetrain	4x2
Transmission	6 Speed Automatic
Suspension	4 Spring
Rear Axle	Single Axle
Rear End	14,706 lb 4.88 ratio
Door Type	Swing
Outriggers	Yes
Max Reach	16 ft
Lift Capacity	4026.00 Lb
Lift Capacity	2.00 Ton
Stock Number	A35809
MLS Number	13721313
Category	Mechanic / Utility / Service Trucks
Last Updated	5/8/2026
Location	Midvale, UT, US
Sold By	MTS Utah, Inc.

(844) 445-___ SHOW
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2019 Kenworth T370 Mechanic / Service Truck - Paccar, 300HP, 6 Speed Automatic

$136,900 USD

2019 Kenworth T370 --- Single Axle, PX9 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...

Condition	Used
Usage	177,380 Miles
Duty Class	Heavy Duty Service Truck
Horse Power	300 HP
Engine Model	Paccar PX9
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb 5.57 ratio
Stock Number	259378
MLS Number	14358843
Category	Mechanic / Utility / Service Trucks
Last Updated	5/12/2026
Location	Chatham, VA, US
Sold By	Atkinson Truck Sales

(855) 804-___ SHOW
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2022 Chevrolet Silverado 3500 Mechanic / Service Truck - Duramax, 445HP, 6 Speed Automatic

$57,500 USD

2022 Chevrolet 3500HD Service/Utility Truck, Diesel, Auto, 4x4 Powertrain Chassis: 60528 miles, 6.6L Duramax V8 with 445HP/910lbs-ft Torque, 10 Speed Automatic Transmission | 4x4, Hydraulic...

Condition	Used
Usage	60,528 Miles
Duty Class	Light Duty Service Truck
Horse Power	445 HP
Engine Model	Duramax L5P 6.6L V8
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	10,400 lb
Stock Number	T17810M
MLS Number	14356620
Category	Mechanic / Utility / Service Trucks
Last Updated	5/7/2026
Location	Wheat Ridge, CO, US
Sold By	DTI Trucks

(833) 660-___ SHOW
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2023 GMC Sierra 2500 Mechanic / Service Truck - Chevrolet, 400HP, 6 Speed Automatic

$56,500 USD

2023 GMC 2500HD Service/Utility Truck, Gas, 4x4 Powertrain Chassis: 29,539 miles | 1002 Engine Hours, 6.6L L8T V8 with 400HP/464lbs-ft Torque, 6 Speed Automatic Transmission | 4x4,...

Condition	Used
Usage	29,539 Miles
Duty Class	Light Duty Service Truck
Horse Power	400 HP
Engine Model	L8T
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	6,390 lb
Stock Number	T17831M
MLS Number	14356615
Category	Mechanic / Utility / Service Trucks
Last Updated	5/7/2026
Location	Wheat Ridge, CO, US
Sold By	DTI Trucks

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2017 Kenworth T370 Mechanic / Service Truck - Paccar, 330HP, 6 Speed Allison Rds Automatic

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Altech AA55E bucket body, 56' Boom, 600 lb bucket capacity, 4 outriggers, Fabco TC137 4x4 transfer case, Allison 3500RDS transmission, Paccar PX9 330HP, Engine brake, Reyco spring suspension...

Condition	Used
Usage	147,119 Miles
Duty Class	Heavy Duty Service Truck
Bed Length	56 ft.
Horse Power	330 HP
Engine Model	Paccar PX9
Drivetrain	4x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	23,000 lb 5.57 ratio
Stock Number	6951
MLS Number	14035568
Category	Mechanic / Utility / Service Trucks
Last Updated	5/7/2026
Location	Boise, ID, US
Sold By	Diesel Depot

(844) 714-___ SHOW
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2017 Kenworth T270 Mechanic / Service Truck - Paccar, 300HP, 6 Speed Allison Rds Automatic

$109,900 USD

2017 Kenworth T270 --- Single Axle, PX9 Paccar 300 HP, Allison Automatic 6 Speed, 5.25 Ratio, 10,000 Front Axle, 16,000 Rear Axle, 157" Wheelbase, Air Ride Suspenison, Air Brake,...

Condition	Used
Usage	9,488 Hours
Duty Class	Medium Duty Service Truck
Horse Power	300 HP
Engine Model	Paccar PX9
Drivetrain	4x2
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	16,000 lb 5.25 ratio
Stock Number	139427
MLS Number	14282017
Category	Mechanic / Utility / Service Trucks
Last Updated	5/6/2026
Location	Chatham, VA, US
Sold By	Atkinson Truck Sales

(855) 804-___ SHOW
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2023 Chevrolet 5500 Mechanic / Service Truck - Gm, 350HP

$135,500 USD

2023 Chevrolet 5500 4x4, 32,033 Miles, 7,500 Lbs. FAWR, 15,000 Lbs. RAWR, 19,500 Lbs. GVWR, 6.6L Duramax Diesel Engine, 350 Horsepower, Automatic Transmission 2023 Load King Service Body,...

Condition	Used
Horse Power	350 HP
Engine Model	6.6L D
Drivetrain	4x4
Transmission	6 Speed
Suspension	Spring
Rear End	15,000 lb
Stock Number	PH781526
MLS Number	14346952
Category	Mechanic / Utility / Service Trucks
Last Updated	5/7/2026
Location	Poulsbo, WA, US
Sold By	Custom Truck One Source

(844) 476-___ SHOW
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2009 Chevrolet Silverado 4x4 Gas Mechanic / Service Truck - Gm

At auction

2009 Chevy Silverado 4x4 Knapheide KUV Service Truck, 6.0L V-8, 135,292 Miles, 6L-90 6 Speed Automatic Overdrive Transmission, 3.73 Gear Ratio, 157" W.B. 265/75R16 Rubber, P/S A/C, Ladder...

Condition	Used
Usage	135,292 Miles
Horse Power	0 HP
Engine Model	6.0L V8
Transmission	6 Speed
Suspension	Spring
Stock Number	9E135614
MLS Number	14349613
Category	Mechanic / Utility / Service Trucks
Last Updated	5/8/2026
Location	Kansas City, MO, US
Listed By	Custom Truck One Source

(844) 476-___ SHOW
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2018 Ford F-550 Super Duty 9' Utility/Service Truck, 6.7L Powerstroke, 4X4, One-Owner, Clean Carfax

$34,995 USD

FOR SALE: 2018 FORD F-550 SUPER DUTY 4X4 9' SERVICE / UTILITY TRUCK, For sale is a 2018 Ford F-550 Super Duty 4x4 configured as a heavy-duty utility / service truck equipped with a 9-foot...

Condition	Used
Usage	7,129 Hours
Duty Class	Medium Duty Service Truck
Upfit Type	Service Utility Truck Body
Upfit Make	MCB
Bed Length	9.4
Horse Power	330 HP
Engine Model	Ford Powerstroke
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	14,706 lb
Stock Number	B36662
MLS Number	14137866
Category	Mechanic / Utility / Service Trucks
Last Updated	5/5/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

(844) 982-___ SHOW
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2025 Freightliner M2 106 Mechanic / Service Truck - Cummins, 280HP, 6 Speed Allison Rds Automatic

Contact for price

On Consignment, Just acquired this AMAZING 4X4 Freightliner M2106 service truck, product tanks, 14 foot Knapheide body with 14 foot, 12 ton crane!! only 6700 miles!!! Infinity Generator,...

Condition	Used
Usage	6,500 Miles
Duty Class	Heavy Duty Service Truck
Horse Power	280 HP
Engine Model	Cummins L9
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	20,000 lb
Stock Number	VK8189
MLS Number	14347235
Category	Mechanic / Utility / Service Trucks
Last Updated	5/13/2026
Location	West Valley City, UT, US
Sold By	Utah Tank & Trailer

(833) 780-___ SHOW
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2008 Ford F-750 Mechanic / Service Truck - Cummins, 325HP, 6 Speed Manual

$20,000 USD

GOOD TRUCK, RUNS EXCELLENT, AIR BRAKES, DIFFERENTIAL LOCK, AUTO CRANE BODY, 8005H AUTOCRANE, AIR COMPRESSOR HOSE REEL, LOTS OF STORAGE!,

Condition	Used
Usage	118,877 Miles
Duty Class	Heavy Duty Service Truck
Horse Power	325 HP
Drivetrain	4x2
Transmission	6 Speed Manual
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb
Stock Number	08F750118SER
MLS Number	14020306
Category	Mechanic / Utility / Service Trucks
Last Updated	5/1/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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2016 Kenworth T370 Mechanic / Service Truck - Paccar, 300HP, 6 Speed Allison Rds Automatic

$117,900 USD

Single Axle, 14' Service Body, Stellar 7621 Crane (7,500 Capacity), Hydraulic Outriggers, American Eagle 30R Compressor, Power Inverter, (7) 28" Drawers, (7) 16" Drawers, (7) 14" Drawers,...

Condition	Used
Usage	10,044 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	GM124085
MLS Number	14109054
Category	Mechanic / Utility / Service Trucks
Last Updated	4/29/2026
Location	Chatham, VA, US
Sold By	J&J Truck Sales

(844) 305-___ SHOW
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2022 RAM 5500 Mechanic / Service Truck - Cummins, 360HP, 6 Speed Automatic

$139,500 USD

2022 RAM 5500 4X4 Mechanics Truck, 6.7L Cummins Turbo Diesel Engine, 360HP, Exhaust Brake, 6 Speed Automatic Transmission, Only 68,967 Miles Only 1,858 Engine Hours, 19.5K GVWR (7,250 LB...

Condition	Used
Usage	1,858 Hours
Duty Class	Medium Duty Service Truck
Horse Power	360 HP
Engine Model	Cummins B6.7
Drivetrain	4x4
Transmission	6 Speed Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	13,500 lb
Stock Number	T17995D
MLS Number	14140875
Category	Mechanic / Utility / Service Trucks
Last Updated	4/25/2026
Location	Denver, CO, US
Sold By	DTI Trucks

(855) 653-___ SHOW
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2019 Peterbilt 337 Mechanic / Service Truck - Paccar, 300HP

$127,500 USD

2019 Peterbilt 337 4x2, 140,784 Miles, 33,000 Lbs. GVWR, 12,000 Lbs. FAWR, 21,000 Lbs. RAWR, Paccar PX-7 Engine, 300 Horsepower, Allison 2500RDS Transmission 2018 Load King Voyager II, 2018...

Condition	Used
Usage	158,703 Miles
Horse Power	300 HP
Engine Model	Paccar PX7 D
Drivetrain	4x2
Transmission	6 Speed
Suspension	Spring
Rear End	21,000 lb
Stock Number	KM634016
MLS Number	13243036
Category	Mechanic / Utility / Service Trucks
Last Updated	4/25/2026
Location	Denver, CO, US
Sold By	Custom Truck One Source

(844) 476-___ SHOW
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2021 Freightliner M2 106 Mechanic / Service Truck - Cummins, 325HP

At auction

2021 Freightliner M2 "Rail Gear Equipped" Water Truck, Cummins 6.7@325 H.P. 12,498 Miles and 631 Hours, Allison 3500 RDS (Rugged Duty Series) 6 Speed Automatic Overdrive Transmission, 12,000...

Condition	Used
Usage	12,498 Miles
Horse Power	325 HP
Engine Model	Cummins B6.7L
Transmission	6 Speed
Suspension	Spring
Rear End	20,000 lb
Stock Number	MDMC4149
MLS Number	14327732
Category	Mechanic / Utility / Service Trucks
Last Updated	4/23/2026
Location	Kansas City, MO, US
Listed By	Custom Truck One Source

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2017 Ford F-550 11' Mechanic/Service Body with Stellar 7621 7,000 lbs. Crane

$58,995 USD

For Sale:, 2017 Ford F-550 Super Duty Utility Truck with Knapheide mechanic body and Stellar 7621 telescopic crane, purpose-built for heavy-duty field service, equipment repair, and mobile...

Condition	Used
Usage	190,396 Miles
Duty Class	Medium Duty Service Truck
Upfit Type	Welder / Mechanics Body / Crane Truck Body
Upfit Make	Stellar
Upfit Model	7621
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
Outriggers	Yes
Lift Height	23 ft
Max Reach	21 ft
Lift Capacity	7000.00 Lb
Stock Number	B18903
MLS Number	13751221
Category	Mechanic / Utility / Service Trucks
Last Updated	4/22/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

(844) 982-___ SHOW
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2011 Freightliner M2 106 Mechanic / Service Truck - Cummins, 250HP, 6 Speed Manual

$27,000 USD

NICE TRUCK, RUNS EXCELLENT, WELL MAINTAINED, 15 FT IMT TOOL BODY, IMT 3816 CRANE WITH REMOTE, BOSS 440 HYDRAULIC AIR COMPRESSOR, AIR HOSE REEL!,

Condition	Used
Usage	304,644 Miles
Duty Class	Medium Duty Service Truck
Horse Power	250 HP
Engine Model	Cummins ISB
Drivetrain	4x2
Transmission	6 Speed Manual
Suspension	Spring
Rear Axle	Single Axle
Rear End	19,000 lb 4.30 ratio
Stock Number	11M2304SER
MLS Number	14317785
Category	Mechanic / Utility / Service Trucks
Last Updated	4/17/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

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2021 RAM 5500 Mechanic / Service Truck - Cummins, 370HP

$104,500 USD

2021 Dodge Ram 5500 4x4, 155,015 Miles, 19,500 Lbs. GVWR, 7,250 Lbs. FAWR, 13,500 Lbs. RAWR, Cummins 6.7L Engine, 360 Horsepower, Automatic Transmission 2021 Knapheide Service Body, Stellar...

Condition	Used
Usage	155,015 Miles
Horse Power	370 HP
Engine Model	Cummins 6.7L D
Drivetrain	4x4
Transmission	6 Speed
Suspension	Spring
Rear End	13,500 lb
Stock Number	MG662317
MLS Number	13355842
Category	Mechanic / Utility / Service Trucks
Last Updated	4/21/2026
Location	Kansas City, MO, US
Sold By	Custom Truck One Source

(888) 315-___ SHOW
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2017 Ford F-450 Mechanic / Service Truck - Powerstroke

At auction

2017 Ford F450 Powerstroke Service Truck. 6.7L Powerstroke Diesel, 164,985 Miles 6R140 6 Speed Automatic Overdrive Transmission, 16,000 L.B. GVWR, 4.10 Gear Ratio, 169" W.B. 225/70R19.5...

Condition	Used
Usage	164,985 Miles
Horse Power	0 HP
Engine Model	Powerstroke V8 6.7L
Transmission	6 Speed
Suspension	Spring
Rear End	12,000 lb
Stock Number	HEC19221
MLS Number	14232917
Category	Mechanic / Utility / Service Trucks
Last Updated	4/18/2026
Location	Kansas City, MO, US
Listed By	Custom Truck One Source

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2013 Freightliner M2 106 Mechanic / Service Truck - Cummins, 350HP

$41,500 USD

153,321 Miles, Cummins ISC 350 HP, Allison 3000 RDS, 12,000 Lb. FAWR, 20,280 Lb. RAWR, 32,280 Lb. GVWR Knapheide Enclosed Service Body, Inner Tool Shelving, Master Lock System, Tommy Gate...

Condition	Used
Usage	153,321 Miles
Horse Power	350 HP
Engine Model	Cummins ISC D
Drivetrain	4x2
Transmission	6 Speed
Suspension	Spring
Stock Number	DHBZ0360
MLS Number	13976104
Category	Mechanic / Utility / Service Trucks
Last Updated	4/21/2026
Location	Kansas City, MO, US
Sold By	Custom Truck One Source

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2018 Ford F-550 Mechanic / Service Truck - 6.7L D, 330HP

$84,500 USD

2018 Ford F-550 4x4, 140,517 Miles, Ford 6.7L Power Stroke, Automatic, 7000 Lb. FAWR, 14,706 Lb. RAWR, 19,500 Lb. GVWR; 2019 Load King Voyager I Service Body, Swing-Out Doors, 2019 Auto...

Condition	Used
Usage	140,517 Miles
Horse Power	330 HP
Engine Model	Ford 6.7L D
Drivetrain	4x4
Transmission	6 Speed
Suspension	Spring
Rear End	14,706 lb
Stock Number	JDA02602
MLS Number	13414221
Category	Mechanic / Utility / Service Trucks
Last Updated	4/14/2026
Location	Cinnaminson, NJ, US
Sold By	Custom Truck One Source

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