GMC Sierra 3500HD IV (GMTK2XX) Regular Cab Long Box 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic


Overall Rating

7.8 / 10
Safety N/A / 5
Not Rated
Engine 3.8 / 5
Value 4.0 / 5
Performance 4.5 / 5
Comfort 3.0 / 5
People\'s Opinion 4.1 / 5

GMC Sierra 3500HD:

The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks. The fourth generation of the model line was introduced for the 2019 model year.
The Chevrolet Silverado shares mechanical commonality with the identically related GMC Sierra; GMC ended the use of the C/K nomenclature a model generation prior to Chevrolet. In Mexico, high-trim level versions of the Silverado use the Chevrolet Cheyenne name. Competing against the Ford F-Series, Ram pickup, Toyota Tundra, and Nissan Titan, the Silverado is among the best-selling vehicles in the United States, having sold over 12 million trucks since its introduction in 1998 as a 1999 model year....(Read more on Wikipedia)

IV (GMTK2XX) Regular Cab Long Box Overview:

GMC Sierra 3500HD (IV (GMTK2XX) Regular Cab Long Box). With 1234 Nm of torque, it offers ample pulling power. At around 3241 kg, it’s on the heavier side. All‑wheel drive provides excellent grip, ideal for off‑road use. A vehicle with an open cargo bed at the back, suitable for transporting goods. Seating for 2 makes it ideal for daily use.

6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic Verdict:

Rating 5 stars

Performance Verdict

Combines the top-tier Duramax power with 4WD and SRW versatility, offering exceptional performance for a wide range of heavy-duty applications.

Fuel Economy

Achieves impressive fuel economy for its power and capability, making it a highly efficient choice for demanding work.

Best Use Case: High-performance towing and hauling where 4WD is essential, but the maneuverability of a single rear wheel is preferred.

reddit Community Verdict

This rating is based on comments found on Reddit, scanned using artificial intelligence, and may not accurately reflect reality.

Allowed: 72% Neutral: 11% Issues: 17%
rating
4.1 / 5

Based on AI analysis of 18 discussions

Read What Owners Say
👍 POSITIVE
Had one in my last 3 trucks and was reason number 1 I decided to stick with Chevy/GMC. No trouble at all in the last 17 years.
👍 POSITIVE
I have a late '24 Denali, with 18K miles on it... mostly highway miles across the PNW, and have never had a single issue with it. (KNOCK ON WOOD!!!)
👍 POSITIVE
Had a 2017 and the tranny sucked, but the engine was great. My 2024 has the same engine and a better tranny. Love it.
👍 POSITIVE
https://preview.redd.it/y59zs15lcv2g1.jpeg?width=6048&format=pjpg&auto=webp&s=7f938b4fc9c058ede8cbb8e94d0d2ce477abee25 no issues at all.
👍 POSITIVE
yes, along with the millions of other happy drivers with 5.3s. the few with lemons are loud on reddit but vast majority will serve you well. good luck
👍 POSITIVE
This baby has over 307k miles. I did afm delete at 264k, but most won't hit those miles. Drive it like you stole it and keep up on maintenance and you'll be fine. https://preview.redd.it/yel68agkqu2g1.jpeg?width=1438&format=pjpg&auto=webp&s=6778a93e3baaf0eedf8553f2447be97b870b407c
👍 POSITIVE
I had an 08, 15 and now a 24. Great truck otherwise I wouldn’t be on my 3rd. Thankfully no issues, the negative comments get a lot of attention, great truck - enough said.
👎 NEGATIVE
I had 19 at4 5.3 for 145k. Did have lifters replaced under warranty at 60k then 145 needed news trans. Got the diesel instead of fixing trans. But other than that it was great no towing. All highway mainly in 6 years
👎 NEGATIVE
I had lifters in both sides done at 7k miles and am still having a ticking / collapsed lifter sound. Currently going through a lemon law case
👍 POSITIVE
5.3s are solid. I just got the sierra with the 3.0L diesel for $61k, zero miles (and I believe the 3.0l should add on a few grand?). $56k with almost 10k miles seems a little high. Maybe try to weasel a few more grand. Otherwise sweet truck.


Pros and Cons:

Pros:

  • • Exceptional towing and hauling capabilities, especially with Duramax diesel engines.
  • • Robust and durable construction designed for heavy-duty work.
  • • Wide range of configurations (4WD/2WD, SRW/DRW) to suit diverse needs.
  • • Powerful engine options, including the highly capable Duramax diesel.
  • • Spacious interior for a regular cab, with functional controls.

Cons:

  • • Gasoline engine fuel economy is poor, particularly under load.
  • • Ride comfort can be stiff and truck-like when unladen.
  • • Large size makes maneuverability challenging in urban environments.
  • • Higher purchase price for diesel variants and top trims.
  • • Interior materials, while durable, may lack the refinement of some competitors.

Specifications:

Specifications are compared to those of the previous generation(IV (GMTK2XX) Crew Cab Long Box: 2015 - 2019).

General:
Brand:GMC
Model:Sierra 3500HD
Generation:IV (GMTK2XX) Regular Cab Long Box
Modification (Engine):6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic
Start of production:2017
End of production:2019
Powertrain Architecture:Internal Combustion engine
Body type:Pick-up
Seats:2
Doors:2
Engine:
Engine systems:Particulate filter
Power:445 Hp @ 2800 rpm. Same horsepower
Power per litre:67.5 Hp/l [864mm less]
Torque:1234 Nm @ 1600 rpm.
Engine Model/Code:Duramax L5P More details about the engine Duramax L5P
Engine displacement:6588
Number of cylinders:8
Engine configuration:V-engine
Number of valves per cylinder:4
Fuel injection system:Diesel Commonrail
Engine aspiration:Turbocharger, Intercooler
Valvetrain:OHV
Engine oil capacity:9.5 l
Coolant:29.7 l
Engine layout:Front, Longitudinal
Cylinder Bore:103 mm mm
Piston Stroke:99 mm mm
Compression ratio:16:1
Performance:
Fuel Type:Diesel
Weight-to-power ratio:7.3 kg/Hp, 137.3 Hp/tonne
Weight-to-torque ratio:2.6 kg/Nm, 380.7 Nm/tonne
Space:
Kerb Weight:3241
Max. weight:5171
Max load:1930
Trunk (boot) space - maximum:2162 l
Permitted trailer load with brakes (12%):6577 kg
Fuel tank capacity:136 l
Size:
Length:5699 mm mm [864mm less]
Width:2035 mm mm [403mm less]
Height:1979 mm mm [4mm more]
Wheelbase:3393 mm mm [866mm less]
Width including mirrors:2035 mm
Front track:1748 mm
Rear (Back) track:1709 mm
Minimum turning circle (turning diameter):14 m [above average]
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary.
Drive wheelAll wheel drive (4x4)
Number of gears6
Transmission typeAutomatic
Gearbox typeAllison
Front brakesVentilated discs, 355 mm [Best for performance and cooling.]
Rear brakesVentilated discs, 360 mm [Best for performance and cooling.]
Assisting systemsABS (Anti-lock braking system)
Steering typeCone worm with recirculation balls
Tires size235/80 R17; 265/70 R18
Wheel rims size7.5J x 17; 8J x 18
Front suspensionCoil spring, Double wishbone, Transverse stabilizer
Rear suspensionRigid axle suspension, Leaf spring

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