What is the fuel capacity of the 3500 HD?
The 3500 HD refers to GM’s heavy‑duty Silverado 3500HD and GMC Sierra 3500HD pickups. The typical fuel tank capacity is 36 gallons, though the exact figure can vary by year, engine and cab/bed configuration. This article explains the standard size and how to verify it for your specific vehicle.
Standard capacity for most current 3500 HD models
The official specifications for most recent GM 3500HD trucks list a 36‑gallon fuel tank as the standard capacity. This figure generally covers both the Duramax diesel variant and the gasoline engine options that were offered in various generations.
- 36 gallons (approximately 136 liters) is the baseline capacity for the majority of current Silverado 3500HD and Sierra 3500HD configurations.
- The Duramax diesel version typically shares this capacity, though exact figures can depend on the year and specific build.
- Older or fleet configurations may show slight variations; always verify against the exact model year’s official spec sheet or window sticker.
In practice, 36 gallons serves as the standard reference for planning fuel range and maintenance. For precise figures, consult the owner’s manual, the factory window sticker, or an official GM spec sheet for your exact year and model.
Why the capacity can vary
While 36 gallons is the common baseline, the tank size can differ slightly with changes in year, engine option, and body style. The most reliable way to confirm the exact capacity is to check the official specifications for your specific vehicle.
Engine and configuration factors
GM’s 3500HD lineup includes diesel and gasoline variants, and body configurations (crew cab, double cab, long bed, etc.) can influence packaging. In current generations, these differences are usually minor, but they can affect the stated capacity on some builds.
How to verify for your vehicle
To confirm the exact capacity for your 3500HD, you can:
• Review the owner’s manual for the precise fuel tank specification.
• Check the original window sticker (Monroney label) attached at purchase.
• Ask a GM dealer or pull the official spec sheet for your VIN, which a dealer can retrieve quickly.
Bottom line
For most GM 3500HD trucks, plan around a 36‑gallon fuel tank as the standard reference. Exact capacity should be verified for your specific year, engine, and cab/bed configuration to ensure accurate range estimates.
Summary: The 3500 HD’s typical fuel capacity is 36 gallons, with minor variations by year and configuration. Always confirm the exact figure from official documentation for your vehicle.
How big is the gas tank on a Chevy 3500 HD?
Specifications. Fuel tank capacity - 36.0gal.
How many gallons of diesel does a Chevy 3500 hold?
With sturdy 18-inch steel DRW wheels and two fuel tank options, including an available tank capacity of approximately 63 gallons, Silverado 3500 HD Chassis Cab will help make the toughest jobs feel easier.
How many gallons does my 6.6 Duramax hold?
The fuel tank capacity of a 6.6 Duramax truck, such as a 2500HD or 3500HD, typically ranges from 24 to 36 gallons, depending on the cab and bed configuration. Crew cab models generally have a 36-gallon tank. Extended cab and regular cab models may have slightly smaller tanks, typically around 24 to 26 gallons.
What's the difference between a 2500HD and a 3500HD?
The main difference between a 2500HD and 3500HD is the 3500HD's higher towing and payload capacities, which are achieved through its beefier suspension and optional dual rear wheels. While the 2500HD is a heavy-duty truck suitable for most tasks, the 3500HD is built for maximum power and is ideal for the heaviest jobs like large trailers and commercial use. The 2500HD is often a better choice for a daily driver due to its narrower body and slightly smoother ride, while the 3500HD's dual-wheel option makes it wider and less maneuverable in urban areas.
This video explains the differences between 2500HD and 3500HD trucks: 58sSoCal ChevyYouTube · Oct 5, 2023
Towing and payload
- 3500HD: Has higher maximum towing and payload capacities, with some configurations allowing for up to 36,000 lbs of towing.
- 2500HD: Offers strong, but lower, towing and payload capacities, suitable for most heavy-duty tasks.
Drivetrain and chassis
- 3500HD: Can be configured with dual rear wheels (DRW) to increase stability and load capacity, though it's also available in single rear wheel (SRW). It has a more robust suspension and chassis to handle heavier loads.
- 2500HD: Is only available with single rear wheels (SRW), making it narrower and easier to handle in tight spaces.
You can watch this video to see a comparison of the rear suspension between 2500HD and 3500HD trucks: 1mtruckguyjoeYouTube · Jul 11, 2017
Ride and maneuverability
- 3500HD: The dual rear wheel configuration can result in a stiffer, more robust ride, especially when unladen, and a larger turning radius.
- 2500HD: Typically provides a slightly softer ride quality compared to the 3500HD, making it a more comfortable option for everyday driving and parking.
Other similarities
- Engine and transmission: Both models often share the same engine and transmission options, like the 6.6L turbo diesel with 975 lb-ft of torque and a 10-speed automatic transmission.
- Interior and technology: Many interior features, technology, and cab configurations are identical between the two trucks.
