6 Speed Trucks with GMC Engines For Sale

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Showing 501 - 525 of 592 Truck Listings

501 - 525 of 592 listings
501 - 525 of 592 listings
2019 Chevrolet Silverado 1500, Double Cab, 4X4, 5.3L Ecotec3 V8 power, 1-Owner, fleet Maintained, Clean Carfax

2019 Chevrolet Silverado 1500, Double Cab, 4X4, 5.3L Ecotec3 V8 power, 1-Owner, fleet Maintained, Clean Carfax

$17,295 USD
FOR SALE – 2019 CHEVROLET SILVERADO 1500 DOUBLE CAB (WORK TRUCK), For sale is a dependable and fleet-maintained half-ton pickup designed to support a wide range of commercial and...
ConditionUsed
Usage135,702 Miles
Duty ClassLight Duty Truck
Horse Power355 HP
Engine ModelGMC L83 - DI, AFM, ALUM, GEN 5, VAR 1
Drivetrain4WD
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End3,950 lb
Stock Number112725
MLS Number14007116
CategoryPickup Trucks
Last Updated12/15/2025
Location
Miami, FL, US
Sold By
Truck and Van Outlet
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2023 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$38,250 USD
Used 2023 Isuzu NPR EFI Box Truck for sale, 108,511 miles, 350 HP 6.6L V8 gasoline engine by GMC, 6-speed automatic transmission, white, roll-up door, spring suspension, 30-gallon fuel...
ConditionUsed
Usage110,254 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number505895
MLS Number14016207
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated12/18/2025
Location
Albany, NY, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2021 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$36,000 USD
Used 2021 Isuzu NPR EFI Box Truck for sale, 122,190 miles, 350 HP 6.6L V8 GMC gasoline engine, 6-speed automatic transmission, single rear axle, spring suspension, roll-up door. See it now.
ConditionUsed
Usage122,626 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number487672
MLS Number13879432
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Fontana, CA, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2021 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$32,250 USD
Used 2021 Isuzu NPR EFI box truck for sale, 123,808 miles, 350 HP 6.6L V8 gasoline engine by GMC, 6-speed automatic transmission, single rear axle, spring suspension, 126" height. See it now...
ConditionUsed
Usage124,795 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number487410
MLS Number14015517
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated12/25/2025
Location
Wickliffe, OH, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$25,250 USD
Used 2021 GMC G33903 Box Truck for sale, 118,272 miles, 401 HP 6.6L V8 GMC engine, 6-speed automatic transmission, 8600 lbs single rear axle, 33-gallon fuel capacity, yellow with roll-up...
ConditionUsed
Usage118,562 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91618783
MLS Number13862795
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/8/2026
Location
Rochester, NY, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2022 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$28,500 USD
Used 2022 GMC G33903 Box Truck for sale, 126,973 miles, 401 HP 6.6L V8 gasoline engine, 6-speed automatic transmission, single rear axle with 8,600 lbs capacity, 177” wheelbase, white,...
ConditionUsed
Usage126,974 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91626554
MLS Number14016183
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/4/2026
Location
Homewood, AL, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2022 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$31,000 USD
Used 2022 GMC G33903 Box Truck for sale, 110,424 miles, 401 HP 6.6L V8 gasoline engine, 6-speed automatic transmission, 8,600 lbs single rear axle, 177-inch wheelbase, roll-up door. Check it...
ConditionUsed
Usage112,694 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91626410
MLS Number13437045
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated12/21/2025
Location
Obetz, OH, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2021 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$39,500 USD
Used 2021 Isuzu NPR EFI box truck for sale, 103,170 miles, 350 HP 6.6L V8 gasoline engine by GMC, 6-speed automatic transmission, single rear axle, spring suspension, roll-up door. Check it...
ConditionUsed
Usage103,970 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number487971
MLS Number14015548
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Orlando, FL, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$27,500 USD
Used 2021 GMC G33903 Box Truck for sale, 111,152 miles, 401 HP 6.6L V8 gasoline engine, 6-speed automatic transmission, 8600 lbs single rear axle, 177-inch wheelbase, 33-gallon fuel capacity...
ConditionUsed
Usage111,160 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91620542
MLS Number13852621
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated12/28/2025
Location
Conyers, GA, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$29,000 USD
Used 2021 GMC G33903 Box Truck for sale, 106,506 miles, 401 HP 6.6L V8 gasoline engine, 6-speed automatic transmission, 8600 lbs rear axle, 177-inch wheelbase, roll-up door, white color. See...
ConditionUsed
Usage115,240 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91620038
MLS Number13881419
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated12/20/2025
Location
Gainesville, GA, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 297HP, 6 Speed Automatic, Roll up Door

2020 Isuzu NPR EFI Box Truck - 297HP, 6 Speed Automatic, Roll up Door

$35,000 USD
Used 2020 Isuzu NPR EFI Box Truck for sale, 92,511 miles, 297HP GMC 6.0L V8 gasoline engine, 6-speed automatic transmission, single rear axle, spring suspension, 30-gallon fuel capacity,...
ConditionUsed
Usage101,430 Miles
Duty ClassLight Duty Box Truck
Horse Power297 HP
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number378363
MLS Number13881291
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/9/2026
Location
Montgomery, NY, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 297HP, 6 Speed Automatic, Roll up Door

2020 Isuzu NPR EFI Box Truck - 297HP, 6 Speed Automatic, Roll up Door

$38,750 USD
Used 2020 Isuzu NPR EFI Box Truck for sale, 96,754 miles, 297 HP 6.0L V8 gas engine by GMC, 6-speed automatic transmission, single rear axle, spring suspension, 30-gallon fuel capacity. Come...
ConditionUsed
Usage99,760 Miles
Duty ClassLight Duty Box Truck
Horse Power297 HP
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number378223
MLS Number13870167
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/8/2026
Location
Birmingham, AL, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2021 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$33,250 USD
Used 2021 Isuzu NPR EFI Box Truck for sale, 125,644 miles, 350 HP 6.6L V8 gasoline engine by GMC, 6-speed automatic transmission, single rear axle, spring suspension, 30-gallon fuel capacity...
ConditionUsed
Usage130,115 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number487648
MLS Number13905670
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Pensacola, FL, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2021 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$43,500 USD
Used 2021 Isuzu NPR EFI box truck for sale, 73,739 miles, 350 HP 6.6L V8 GMC engine, 6-speed automatic GMC transmission, single rear axle, roll-up door. Check it out today.
ConditionUsed
Usage75,699 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number487559
MLS Number13694179
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Harrisburg, PA, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$27,750 USD
Used 2021 GMC G33903 Box Truck for sale, 106,652 miles, 401 HP 6.6L V8 gasoline engine, 6-speed automatic transmission, single rear axle 8600 lbs, 177" wheelbase, roll-up door. Don't miss...
ConditionUsed
Usage106,715 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91620645
MLS Number13417574
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/2/2026
Location
Suffolk, VA, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 297HP, 6 Speed Automatic, Roll up Door

2020 Isuzu NPR EFI Box Truck - 297HP, 6 Speed Automatic, Roll up Door

$39,750 USD
Used 2020 Isuzu NPR EFI box truck for sale, 297 HP 6.0L V8 GMC gasoline engine, 6-speed automatic GMC transmission, single rear axle, 6630 lbs front axle, 11020 lbs rear axle, roll-up door,...
ConditionUsed
Usage107,513 Miles
Duty ClassLight Duty Box Truck
Horse Power297 HP
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number378200
MLS Number13870166
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/8/2026
Location
Miami, FL, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 341HP, 6 Speed Automatic, Roll up Door

2020 GMC G33903 Box Truck - 341HP, 6 Speed Automatic, Roll up Door

$28,500 USD
Used 2020 GMC G33903 Box Truck for sale, 109,791 miles, 341 HP 6.0L V8 gasoline engine, 6-speed automatic transmission, 126" height, 177" wheelbase, 8600 lb single rear axle. Check it out.
ConditionUsed
Usage110,341 Miles
Duty ClassLight Duty Box Truck
Horse Power341 HP
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91615886
MLS Number14014361
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Perrysburg, OH, US
Sold By
Penske Used Trucks
2019 Chevrolet Silverado 2500HD Crew Cab Mechanic / Service Truck - Service Utility Truck Body

2019 Chevrolet Silverado 2500HD Crew Cab Mechanic / Service Truck - Service Utility Truck Body

$29,995 USD
FOR SALE: 2019 CHEVROLET SILVERADO 2500HD – 8’ READING UTILITY SERVICE TRUCK (4X4, DURAMAX DIESEL, ALLISON), The 2019 Chevrolet Silverado 2500HD in this configuration is a dependable, fleet...
ConditionUsed
Usage162,262 Miles
Duty ClassLight Duty Service Truck
Upfit TypeService Utility Truck Body
Horse Power445 HP
Engine ModelGMC L5P - Direct Injection, DURAMAX, GEN 5, VAR 1
DrivetrainAWD
Transmission6 Speed Automatic
SuspensionSpring
Rear End6,200 lb
Stock Number217512
MLS Number13989616
CategoryMechanic / Utility / Service Trucks
Last Updated12/15/2025
Location
Miami, FL, US
Sold By
Truck and Van Outlet
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$28,500 USD
Used 2021 GMC G33903 Box Truck for sale, 116,683 miles, 401 HP 6.6L V8 engine, 6-speed automatic transmission, single rear axle 8,600 lbs, 177" wheelbase, white with roll-up door. Check it...
ConditionUsed
Usage118,016 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91623856
MLS Number14024916
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/9/2026
Location
La Mirada, CA, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door

$22,250 USD
Used 2021 GMC G33903 box truck for sale, 401 HP 6.6L V8 gasoline engine, 6-speed automatic transmission, 177-inch wheelbase, 8600 lb single rear axle. Check it out today.
ConditionUsed
Usage149,575 Miles
Duty ClassLight Duty Box Truck
Horse Power401 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 4.10 ratio
Door TypeRoll up
Stock Number91619571
MLS Number14024869
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/8/2026
Location
Albuquerque, NM, US
Sold By
Penske Used Trucks
GMC G33903 Box Truck - 342HP, 6 Speed Automatic, Roll up Door

2014 GMC G33903 Box Truck - 342HP, 6 Speed Automatic, Roll up Door

$18,500 USD
Used 2014 GMC G33903 Box Truck for sale, 85,127 miles, 342HP 6.0L V8 gasoline engine, 6-speed automatic transmission, 8600 lb single rear axle, spring suspension, roll-up door, 33-gallon...
ConditionUsed
Usage85,127 Miles
Duty ClassLight Duty Box Truck
Horse Power342 HP
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End8,600 lb 3.73 ratio
Door TypeRoll up
Stock Number9168769
MLS Number14023118
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Flint, MI, US
Sold By
Penske Used Trucks
Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

2021 Isuzu NPR EFI Box Truck - 350HP, 6 Speed Automatic, Roll up Door

$32,750 USD
Used 2021 Isuzu NPR EFI Box Truck, 143,947 miles, 350 HP 6.6L V8 GMC engine, 6-speed automatic GMC transmission, white, 150" wheelbase, roll-up door, gasoline, light duty. Check it out.
ConditionUsed
Usage143,947 Miles
Duty ClassLight Duty Box Truck
Horse Power350 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End11,020 lb 5.37 ratio
Door TypeRoll up
Stock Number487333
MLS Number14021284
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Homewood, AL, US
Sold By
Penske Used Trucks
Chevrolet G33803 Refrigerated Truck - 400HP, 6 Speed Automatic

2021 Chevrolet G33803 Refrigerated Truck - 400HP, 6 Speed Automatic

$21,250 USD
Used 2021 Chevrolet G33803 Refrigerated Truck for sale, 153,583 miles, 400 HP 6.6L V8 engine by GMC, 6-speed automatic transmission, single rear axle, 30-gallon fuel capacity. Check it out!
ConditionUsed
Usage153,583 Miles
Duty ClassLight Duty Refrigerated Truck
Horse Power400 HP
Engine ModelGMC 6.6LV8
Transmission6 Speed Automatic
Rear AxleSingle Axle
Rear End6,084 lb 4.10 ratio
Door TypeSwing
Stock Number718406
MLS Number13785205
CategoryRefrigerated Trucks
Last Updated12/4/2025
Location
Medley, FL, US
Sold By
Penske Used Trucks
Isuzu NPR Box Truck - 6 Speed Automatic, Roll up Door

2020 Isuzu NPR Box Truck - 6 Speed Automatic, Roll up Door

$25,750 USD
Used 2020 Isuzu NPR Box Truck for sale, 170,374 miles, 6.0L V8 GMC gasoline engine, 6-speed automatic transmission, single rear axle, 30-gallon fuel capacity, roll-up door, light duty. See...
ConditionUsed
Usage170,374 Miles
Duty ClassLight Duty Box Truck
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
Rear AxleSingle Axle
Rear End11,020 lb
Door TypeRoll up
Stock Number718266
MLS Number13635617
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/7/2026
Location
Milwaukee, WI, US
Sold By
Penske Used Trucks
Isuzu NPR Box Truck - 210HP, 6 Speed Automatic, Roll up Door

2018 Isuzu NPR Box Truck - 210HP, 6 Speed Automatic, Roll up Door

$24,000 USD
Used 2018 Isuzu NPR Box Truck for sale, 175,547 miles, 210 HP GMC 6.0L V8 gasoline engine, 6-speed automatic transmission, single rear axle, spring suspension, 33-gallon fuel capacity. Check...
ConditionUsed
Usage175,547 Miles
Duty ClassMedium Duty Box Truck
Horse Power210 HP
Engine ModelGMC 6.0LV8
Transmission6 Speed Automatic
SuspensionSpring
Rear AxleSingle Axle
Rear End6,000 lb
Door TypeRoll up
Stock Number717643
MLS Number13431724
CategoryDelivery / Moving / Straight / Box Trucks
Last Updated1/4/2026
Location
West Valley City, UT, US
Sold By
Penske Used Trucks
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