How big is a 2002 Chevy Avalanche gas tank?
The 2002 Chevy Avalanche’s standard gas tank is 26 gallons for the 1500-models; heavier-duty 2500HD configurations typically use a larger tank, often around 34 gallons. Exact capacity can vary with bed length, drivetrain, and options, so check your specific vehicle to be sure.
Tank sizes by model and configuration
In 2002, Chevrolet offered the Avalanche in two main configurations. The fuel-tank size aligns with those designations, with the lighter-duty model carrying a smaller tank and the heavier-duty variant using a larger one.
- 2002 Avalanche 1500 (V8, 2WD/4WD): 26 gallons (approximately 98.4 liters).
- 2002 Avalanche 2500HD: typically around 34 gallons (approximately 129 liters), depending on drivetrain and bed length.
Note: Tank size can vary by cab/bed configuration and factory options. For the exact figure on your specific vehicle, check the door jamb fuel-label, the owner's manual, or the dealership documentation tied to your VIN.
How to verify the exact capacity on your vehicle
Check the fuel-label, manual, or VIN data
To confirm the precise tank size for your exact truck, look at the fuel-tank capacity label located on the driver’s door jamb or in the owner's manual. If you have access to the VIN, you can also reference manufacturer data or a licensed dealer to pull the exact specification for your build.
Summary
For most 2002 Avalanche 1500 models, the gas tank capacity is 26 gallons. The heavier 2500HD variant uses a larger tank, commonly around 34 gallons. Always verify with your vehicle’s door-label or manual to get the exact figure for your specific configuration.
How many gallons does a 2002 Chevy Avalanche hold?
A 2002 Chevrolet Avalanche holds 31 gallons for the 1500 models and 37.5 gallons for the 2500 models. The specific capacity depends on the model, with the 1500 having a smaller tank and the more heavy-duty 2500 having a larger one.
- 2002 Chevy Avalanche 1500: 31 gallons
- 2002 Chevy Avalanche 2500: 37.5 gallons
How many miles will a 2002 avalanche last?
The Chevy Avalanche Could Potentially Last 250,000 Miles, Study Finds. The Chevy Avalanche is one of 23 vehicle models with at least a 20 percent chance of remaining operational to 250,000 miles or beyond, according to the results of a recent study.
How many miles per gallon does a 2002 Chevy Avalanche get?
The 2002 Chevy Avalanche has an estimated fuel economy of 13 MPG combined, with 12 MPG in the city and 15 MPG on the highway for the 1500 model. The larger 2500 model with the 8.1L V8 engine has lower fuel economy, with some owners reporting around 11 MPG in town and 14 MPG on the highway.
2002 Chevrolet Avalanche MPG
- Avalanche 1500:
- Combined: 13 MPG
- City: 12 MPG
- Highway: 15 MPG
- Avalanche 2500:
- Combined: Not officially listed, but lower than the 1500
- City: Around 11 MPG
- Highway: Around 14 MPG
How big is a Chevy Avalanche gas tank?
31.0 gal
Fuel & MPG
465.0/651.0 mi. 31.0 gal.
