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Plan d’maintenance Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box
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📖Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box: the pinnacle of heavy-haul luxury and power

Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box (2015-2019)

Beneath the refined and aerodynamic sheet metal of the K2XX generation, the Silverado 3500 HD Crew Cab Long Box retained the brute mechanical capability of an industrial tractor while introducing a whisper-quiet, premium cabin. Built on Chevrolet's stiffest hydroformed and boxed steel platform to date, this eight-foot-bed titan was engineered to pull colossal fifth-wheel holiday trailers, luxury multi-horse transports, and heavy commercial plant machinery. Strict and structured Chevrolet Silverado 3500 HD maintenance is essential to ensure its sophisticated mechanical components and modern electronics operate in flawless harmony.

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Owner notes

The reassuring points, known weak spots and deadlines you should not let slip.

Reassuring points

Reliability
  • The K2XX platform delivers exceptional cabin acoustic insulation and long-distance touring comfort alongside monumental towing capacity.
  • The revised 2017+ Duramax L5P diesel engine delivers 445 hp and 910 lb-ft of torque with improved Denso fuel injection reliability.
  • The six-speed Allison automatic transmission provides rock-solid grade braking and seamless gear selection under extreme gross combination weights.
  • Dual rear wheel chassis configuration offers immense directional stability and virtually eliminates trailer sway in crosswinds.

Chronic weak spots

Keep an eye on
  • Duramax L5P emissions: inspect NOx sensors, DEF heater modules, and ensure EGR cooler passages remain clear of excessive carbon fouling.
  • Frame rust protection: inspect the wax-based factory frame coating for peeling and road-salt corrosion on underbody frame rails.
  • Allison 1000 transmission: check transmission fluid condition, inspect external spin-on filters, and verify smooth lock-up in tow/haul mode.
  • Dually rear axle: inspect full-floating wheel hub seals, axle flange gaskets, and monitor inner tyre wear and pressure sensors.
  • Front running gear: check heavy-duty wishbone ball joints, steering idler/pitman linkages, and torsion-bar adjusters for wear.

Critical deadlines

Do not miss
  • Replace the Allison automatic transmission spin-on filter and fluid every 40,000 km during regular heavy trailering operations.
  • Renew diesel fuel filters every 20,000 km using genuine high-efficiency filter cartridges to protect common-rail injection pumps.
  • Drain and refill heavy rear axle and front differential oils every 50,000 km with GM-approved synthetic gear lubricants.
  • Grease all front suspension pivot points, steering linkages, and prop-shaft universal joints at every engine oil change interval.

Fréquences d'maintenance recommandées

Service markers for petrol/diesel versions. Exact intervals vary by engine and model year.

Oil change

Every 15 000 km

Every 1 year

Service

Every 15 000 km

Every 1 year

Brake pads

Every 30 000 km

Every 2 years

Poids ou puissance élevés : usure des number platettes accélérée sur certaines versions

Timing belt / chain

Every 100 000 km

Every 5 years

Battery (12 V)

Every 50 000 km

Every 4 years

Powertrains and average consumption

Average consumption from manufacturer data for the versions available in this generation.

Petrol and diesel powertrains
▾

Petrol, diesel or LPG versions. The intervals shown cover the usual mechanical jobs.

Silverado 3500 HD III (K2XX) Crew Cab Long Box

Estimated average budget

Mid-range cost

Servicing a Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box sits slightly above the market average (+24%).

Simple oil change~125 €
Full service~355 €
Front brake pads~170 €
Timing-belt kit~650 €
Tyres (set of 4)~495 €

* Indicative estimates for parts and labour.

Frequently asked questions about Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box

What are the common problems on the Silverado 3500 HD III (K2XX) Crew Cab Long Box?▾
Silverado 3500 HD III (K2XX) Crew Cab Long Box owners should especially watch: Duramax L5P emissions: inspect NOx sensors, DEF heater modules, and ensure EGR cooler passages remain clear of excessive carbon fouling. Frame rust protection: inspect the wax-based factory frame coating for peeling and road-salt corrosion on underbody frame rails. Garajo includes these watch points so you can act early.
When should you change the timing belt on a Silverado 3500 HD III (K2XX) Crew Cab Long Box?▾
The timing belt is usually replaced every 100,000 km or 5 years on this type of engine.
Where can I find the service book for the Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box?▾
Garajo offers a free digital service book, always up to date, with reminders and a detailed history for your Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box.
How much does it cost to service a Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box?▾
The service budget for a Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box sits slightly above the market average (+24%). Allow about 355 € for a full service, for example. Garajo estimates your budget by powertrain and tracks what you actually spend, for free.
Which Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box powertrain is best for town use?▾
This model is only available as petrol/diesel. Fuel mix: 4 petrol versions ; 8 diesel versions ; 1 LPG version. In town, petrol/LPG versions are usually the better match; diesel versions make more sense with regular long journeys.
Which Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box powertrain should you choose if you mostly drive on the motorway?▾
This model is only available as petrol/diesel. Fuel mix: 4 petrol versions ; 8 diesel versions ; 1 LPG version. For regular motorway use, diesel versions of this model are usually the best fit (range and refinement at a steady speed).

Compatible engine oil

Which engine oil for Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box?

These links are limited to the engines of this generation when oil data is available.

Unsure between two viscosities?5W-30 vs 5W-400W-20 vs 5W-305W-30 vs 0W-30
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