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Plan d’maintenance Chevrolet Silverado 3500 HD III (K2XX) Regular Cab Long Box
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📖Chevrolet Silverado 3500 HD III (K2XX) Regular Cab Long Box: the uncompromised fleet freighter

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

The K2XX Silverado 3500 HD in Regular Cab Long Box specification represents the purest expression of commercial truck engineering. Engineered with a functional two-passenger cab and a massive eight-foot cargo bed, this model served as the backbone for heavy service bodies, flatbed transporters, municipal gritting operations, and severe equipment haulage. Methodical and scheduled Chevrolet Silverado 3500 HD maintenance is essential to ensure this dedicated commercial workhorse delivers long-term dependability under grueling operating conditions.

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Owner notes

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

Reassuring points

Reliability
  • Uncompromising two-door cab configuration delivers maximum payload capacity and bed length on a nimble commercial wheelbase.
  • The fully boxed K2XX frame provides immense torsional rigidity and high front-axle gross weight ratings.
  • The Vortec L96 petrol V8 offers low maintenance overheads and mechanical simplicity for regional commercial fleets.
  • Duramax L5P diesel engine and Allison transmission combination provides benchmark heavy-haul torque and hill-descent braking.

Chronic weak spots

Keep an eye on
  • Commercial chassis alterations: check frame rails for aftermarket drilling, improper welding, or wiring harness splicing.
  • Duramax L5P emissions system: verify DEF injector cleanliness, inspect NOx sensors, and monitor particulate filter regeneration cycles.
  • Rear suspension and overload springs: check multi-leaf packs for sagging, cracked leaves, and worn spring eye bushings.
  • Dually rear axle and hubs: inspect full-floating axle seals, check wheel nut torque, and verify inner tyre condition and inflation.
  • Front suspension: examine heavy-duty wishbone ball joints, torsion-bar mountings, and steering gear for play under severe front axle loads.

Critical deadlines

Do not miss
  • Flush and replace Allison transmission fluid and spin-on filter every 40,000 km under continuous heavy commercial service.
  • Replace engine oil and filter every 10,000 km, checking DEF quality and emissions error codes on Duramax diesel models.
  • Drain and replace lubricant in the heavy rear differential, front axle, and transfer case every 50,000 km.
  • Lubricate all steering linkages, suspension ball joints, and prop-shaft universal joints at every scheduled oil change.

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) Regular Cab Long Box

Estimated average budget

Mid-range cost

Servicing a Chevrolet Silverado 3500 HD III (K2XX) Regular Cab Long Box sits slightly above the market average (+23%).

Simple oil change~115 €
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) Regular Cab Long Box

What are the common problems on the Silverado 3500 HD III (K2XX) Regular Cab Long Box?▾
Silverado 3500 HD III (K2XX) Regular Cab Long Box owners should especially watch: Commercial chassis alterations: check frame rails for aftermarket drilling, improper welding, or wiring harness splicing. Duramax L5P emissions system: verify DEF injector cleanliness, inspect NOx sensors, and monitor particulate filter regeneration cycles. Garajo includes these watch points so you can act early.
When should you change the timing belt on a Silverado 3500 HD III (K2XX) Regular 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) Regular 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) Regular Cab Long Box.
How much does it cost to service a Chevrolet Silverado 3500 HD III (K2XX) Regular Cab Long Box?▾
The service budget for a Chevrolet Silverado 3500 HD III (K2XX) Regular Cab Long Box sits slightly above the market average (+23%). 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) Regular Cab Long Box powertrain is best for town use?▾
This model is only available as petrol/diesel. Fuel mix: 4 petrol versions ; 4 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) Regular 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 ; 4 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) Regular 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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