Plan d’maintenance Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box

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📖Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box: the unvarnished heavy-duty workhorse

Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box (2007-2010)

Before the significant 2011 chassis overhaul, the GMT900 Regular Cab Long Box stood as the purest commercial expression of the Silverado 2500 HD line. Stripped of lifestyle embellishments, this two-door single-cab configuration paired an eight-foot freight bed with an unyielding ladder-frame chassis built purely for hauling raw materials, towing industrial machinery, and surviving harsh quarry conditions. Rigorous Chevrolet Silverado 2500 HD maintenance is essential to keep this utilitarian commercial asset performing dependably.

Engine options featured the naturally aspirated 6.0-litre LY6 petrol V8 and the torquey 6.6-litre Duramax V8 turbo-diesel LMM, paired with the robust Allison automatic transmission. The petrol V8 remains an outstanding choice for municipal and fleet duties that involve frequent idling, short runs, and low annual mileage. Meanwhile, the diesel delivers tremendous low-end torque for heavy machinery transport, though it demands regular sustained running to complete active particulate filter regeneration cycles.

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Entrez votre number plate d’number plate afin de suivre freeement votre Silverado 2500 HD II (GMT900) Regular Cab Long Box

Garajo prépare votre garage et vous permet ensuite de suivre les maintenances, les rappels et les points à surveiller.

Owner notes

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

Reassuring points

Reliability

The single-cab layout maximizes the eight-foot load bed capacity, providing an immense, unobstructed cargo-carrying platform.
The 6.0 LY6 petrol engine provides dependable, unfussy power well suited to short runs and intermittent fleet operation.
The Duramax LMM diesel and Allison transmission pairing delivers unmatched heavy towing stamina over long highway distances.

Chronic weak spots

Keep an eye on

6.0-litre LY6 petrol V8: check for broken exhaust manifold bolts, oil consumption under load, and cooling fan clutch operation.
6.6-litre Duramax LMM: inspect DPF soot loading, check exhaust temperature sensors, and verify that EGR cooler passages are clear.
Allison 1000 transmission: verify positive reverse engagement, inspect transmission cooler lines for corrosion, and check fluid condition.
Fleet cabin wear: inspect steering column bearings, pedal rubbers, seat base mountings, and floor pan condition for signs of arduous usage.
Chassis running gear: check rear leaf spring shackles, bump stops, axle pinion seals, and tow bar crossmember for cracking or severe rust.

Critical deadlines

Do not miss

DPF soot warnings or exhaust gas temperature sensor faults on the Duramax LMM must be resolved promptly to avoid forced engine shutdown.
Transmission fluid weeping, slipping shifts, or high operating temperatures on the Allison 1000 must be rectified to safeguard the torque converter.
On working fleet trucks, changing gearbox, transfer case, and differential lubricants on schedule is essential to avert costly driveline wear.
Worn steering ball joints, flattened rear leaf springs, or distorted towing receivers must be renewed before returning the truck to heavy work.

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 2500 HD II (GMT900) Regular Cab Long Box

Estimated average budget

Mid-range cost

Servicing a Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box sits slightly above the market average (+21%).

Simple oil change~125 €

Full service~355 €

Front brake pads~170 €

Timing-belt kit~650 €

Tyres (set of 4)~450 €

* Indicative estimates for parts and labour.

Frequently asked questions about Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box

What are the common problems on the Silverado 2500 HD II (GMT900) Regular Cab Long Box?▾

Silverado 2500 HD II (GMT900) Regular Cab Long Box owners should especially watch: 6.0-litre LY6 petrol V8: check for broken exhaust manifold bolts, oil consumption under load, and cooling fan clutch operation. 6.6-litre Duramax LMM: inspect DPF soot loading, check exhaust temperature sensors, and verify that EGR cooler passages are clear. Garajo includes these watch points so you can act early.

When should you change the timing belt on a Silverado 2500 HD II (GMT900) 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 2500 HD II (GMT900) 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 2500 HD II (GMT900) Regular Cab Long Box.

How much does it cost to service a Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box?▾

The service budget for a Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box sits slightly above the market average (+21%). 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 2500 HD II (GMT900) Regular Cab Long Box powertrain is best for town use?▾

This model is only available as petrol/diesel. Fuel mix: 2 petrol versions ; 2 diesel versions. In town, petrol/LPG versions are usually the better match; diesel versions make more sense with regular long journeys.

Which Chevrolet Silverado 2500 HD II (GMT900) 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: 2 petrol versions ; 2 diesel versions. 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 2500 HD II (GMT900) Regular Cab Long Box?

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

0W-30 for Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box

Capacity : 5.7 lGM6094MGM6094M 0W-30

10W-30 for Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box

Capacity : 9.5 lAPI CI-4API CI-4 10W-30API CJ-4 10W-30

15W-40 for Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box

Capacity : 9.5 lAPI CI-4API CI-4 10W-30API CJ-4 10W-30

5W-30 for Chevrolet Silverado 2500 HD II (GMT900) Regular Cab Long Box

Capacity : 5.7 lGM6094MGM6094M 0W-30

Unsure between two viscosities?5W-30 vs 0W-30 0W-20 vs 0W-30 5W-30 vs 5W-40

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