2007 GMC Sierra 1500HD Classic Gas Tank Size & Fuel Capacity
Fuel tank capacity
26.0gal · 98 L
The 2007 GMC Sierra 1500HD Classic has a fuel tank capacity of 26.0 gallons (98 liters) on every trim.
26.0 gal · Bigger than 80% of 2007 models we list.
2007 GMC Sierra 1500HD Classic fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
All 6 trims
| Trim | Engine | Drive | Tank | |||
|---|---|---|---|---|---|---|
| SLE1 4dr Crew Cab 4WD SB 6.0L 8cyl 4A · 4WD | 6.0L 8cyl 4A | 4WD | 26.0 gal98 L | |||
| SLE1 4dr Crew Cab SB 6.0L 8cyl 4A · RWD | 6.0L 8cyl 4A | RWD | 26.0 gal98 L | |||
| SLE2 4dr Crew Cab 4WD SB 6.0L 8cyl 4A · 4WD | 6.0L 8cyl 4A | 4WD | 26.0 gal98 L | |||
| SLE2 4dr Crew Cab SB 6.0L 8cyl 4A · RWD | 6.0L 8cyl 4A | RWD | 26.0 gal98 L | |||
| SLT 4dr Crew Cab 4WD SB 6.0L 8cyl 4A · 4WD | 6.0L 8cyl 4A | 4WD | 26.0 gal98 L | |||
| SLT 4dr Crew Cab SB 6.0L 8cyl 4A · RWD | 6.0L 8cyl 4A | RWD | 26.0 gal98 L | |||
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. The EPA doesn't rate fuel economy for heavy-duty pickups and vans (over 8,500 lb gross vehicle weight), so these trims have no official MPG or range.
What it costs to fill up a 2007 GMC Sierra 1500HD Classic
$111.02 to fill the 26.0-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 26.0 gal | Regular | $4.27 | $111.02 | $83.26 |
By region, 26.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $104.52 |
| Midwest | $4.27 | $111.02 |
| Gulf CoastLowest | $3.70 | $96.20 |
| Rocky Mountain | $4.46 | $115.96 |
| West Coast | $5.42 | $140.92 |
| CaliforniaHighest | $5.89 | $153.14 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 26.0-gallon tank$111.02
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Sierra 1500HD Classic tank size in other years
2007 is the first Sierra 1500HD Classic model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2007 Sierra 1500HD Classic | 26.0 gal | Not rated |
2007 GMC Sierra 1500HD Classic vs similar 2007 pickups
At 26.0 gallons, the Sierra 1500HD Classic's largest tank ranks fourth of the five 2007 pickups compared here. The Ford F-250 Super Duty carries the most (38.0 gal) and the Chevrolet Silverado 1500HD Classic the least (26.0 gal).
| 2007 model | Tank | Longest highway range |
|---|---|---|
| Ford F-250 Super Duty | 29.0–38.0 gal | Not rated |
| Dodge Ram Pickup 2500 | 34.0–35.0 gal | Not rated |
| Toyota Tundra | 26.4 gal | 502 mi |
| GMC Sierra 1500HD Classic | 26.0 gal | Not rated |
| Chevrolet Silverado 1500HD Classic | 26.0 gal | Not rated |
Other 2007 pickups of a similar size, one model per brand.
2007 GMC Sierra 1500HD Classic fuel pump and gauge parts
These are the part numbers the makers list for the 2007 GMC Sierra 1500HD Classic. Check the fuel system recalls first: recall repairs are free.
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Frequently asked questions
What is the fuel tank capacity of the 2007 GMC Sierra 1500HD Classic?
The 2007 GMC Sierra 1500HD Classic holds 26.0 gallons (98 liters) on every trim we list.
How many gallons and liters does the 2007 GMC Sierra 1500HD Classic gas tank hold?
The 2007 GMC Sierra 1500HD Classic tank holds 98 liters, or 26.0 gallons in US gallons.
Does 4WD change the 2007 GMC Sierra 1500HD Classic gas tank?
No. 4WD and RWD versions of the 2007 GMC Sierra 1500HD Classic use the same 26.0 gal tank.
What gas does the 2007 GMC Sierra 1500HD Classic take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2007 GMC Sierra 1500HD Classic?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 26.0-gallon tank from empty costs $111.02. It ranges from $96.20 in the Gulf Coast to $153.14 in California.
How much does a full tank of gas weigh in a 2007 GMC Sierra 1500HD Classic?
About 161 pounds for the 26.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2007 GMC Sierra 1500HD Classic have a bigger gas tank than the Chevrolet Silverado 1500HD Classic?
No, they match: both top out at 26.0 gallons in 2007.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings. Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.