The 2002 Chevrolet Trailblazer has a fuel tank capacity of 18.7 to 25.5 gallons (71–97 liters), depending on the trim. The most common size is 18.7 gallons, used on 6 trims.
A full tank is good for roughly 374–485 highway miles or 262–357 miles around town, going by the EPA ratings.
020 gal40 gal
25.5 gal · Bigger than 80% of 2002 models we list.
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2002 Chevrolet Trailblazer goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 16 MPG, a full 18.7-gallon tank covers about 299 miles.
Gauge
Gallons
Highway miles
City miles
Full
18.7
374
262
3/4
14.0
281
196
1/2
9.4
187
131
1/4
4.7
94
65
1/8
2.3
47
33
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 938 gallons, roughly 50 full tanks.
In real driving: owners who log fill-ups at fueleconomy.gov average 16.9 MPG in the Trailblazer (30 drivers), about 316 miles on a full 18.7-gallon tank.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
Other 2002 SUVs of a similar size, one model per brand.
2002 Chevrolet Trailblazer fuel system recalls
NHTSA lists 1 fuel-system recall for the 2002 Chevrolet Trailblazer, out of 13 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Hoses, lines/piping, and fittingsAug 23, 2002 · NHTSA 02V121000 · General Motors Corp. · 136,511 vehicles
On certain sport utility vehicles, a fuel filter fitting can become disconnected. If this were to occur while attempting to start the engine, a no-start condition would result and fuel would be pumped out the fuel filter onto the ground.
Risk and remedy
Risk: If the fitting becomes disconnected while the vehicle is in motion, the engine would stop due to inadequate fuel supply and cause a loss of power steering assist. If an ignition source were present, fuel leakage from a disconnected fuel filter fitting could result in a fire.
Remedy: Dealers will replace the fuel filter quick connect retainers. Owner notification began september 20, 2002. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020. Gmc at 1-800-462-8782, or oldsmobile at 1-800-442-6537.
What is the fuel tank capacity of the 2002 Chevrolet Trailblazer?
The 2002 Chevrolet Trailblazer holds between 18.7 and 25.5 gallons, depending on the trim. 18.7 gallons is the usual size; the 25.5-gallon tank comes on the EXT LT 2WD 4dr SUV (4.2L 6cyl 4A).
How many gallons and liters does the 2002 Chevrolet Trailblazer gas tank hold?
The 2002 Chevrolet Trailblazer tank holds 71–97 liters, or 18.7–25.5 gallons in US gallons.
Which 2002 Chevrolet Trailblazer has the biggest gas tank?
The 25.5-gallon tank is on the EXT LT 2WD 4dr SUV, EXT LT 4WD 4dr SUV. The smallest tank, 18.7 gallons, is on the LS 2WD 4dr SUV.
Does 4WD change the 2002 Chevrolet Trailblazer gas tank?
No. RWD and 4WD versions of the 2002 Chevrolet Trailblazer use the same 18.7–25.5 gal tank.
How far can a 2002 Chevrolet Trailblazer go on a full tank?
About 374–485 miles on the highway and 262–357 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2002 Chevrolet Trailblazer go on a quarter tank?
About 94 highway miles or 65 in town from the 18.7-gallon tank, which has roughly 4.7 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
How many miles does a 2002 Chevrolet Trailblazer really get on a tank?
Drivers who log their fill-ups at fueleconomy.gov average 16.9 MPG in the 2002 Chevrolet Trailblazer (30 drivers), which works out to about 316 miles on a full 18.7-gallon tank.
What gas does the 2002 Chevrolet Trailblazer take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2002 Chevrolet Trailblazer?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 18.7-gallon tank from empty costs $79.85. It ranges from $69.19 in the Gulf Coast to $110.14 in California.
How much does a full tank of gas weigh in a 2002 Chevrolet Trailblazer?
About 158 pounds for the 25.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2002 Chevrolet Trailblazer have a bigger gas tank than the GMC Envoy?
Yes. The 2002 Chevrolet Trailblazer holds up to 25.5 gallons; the 2002 GMC Envoy holds up to 18.7.
Has the 2002 Chevrolet Trailblazer had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 2002 Chevrolet Trailblazer: 02V121000 (delivery · hoses, lines/piping, and fittings). Check your VIN at nhtsa.gov/recalls to see if your car is affected.
Sources
Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).