2012 GMC Sierra 1500 Fuel tank size
Depends on your version. Choose yours, or compare them here.
- 1500 Series Standard and Short Box 26.0 gal
- 1500 Series Long Box 34.0 gal
26.0gal
1500 Series Standard and Short Box
34.0gal
1500 Series Long Box
2012 GMC Sierra 1500 Owner's Manual, PDF page 511
98.4 L 26.0 galOpen the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Fuel tank size · 1500 Series Standard and Short Box · PDF page 511
98.4 L 26.0 gal
Fuel tank size · 1500 Series Long Box · PDF page 511
128.7 L 34.0 gal
2012 GMC Sierra 1500 Owner's Manual, PDF page 511
98.4 L 26.0 galOpen the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Fuel tank size · 1500 Series Standard and Short Box · PDF page 511
98.4 L 26.0 gal
2012 GMC Sierra 1500 Owner's Manual, PDF page 511
128.7 L 34.0 galOpen the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Fuel tank size · 1500 Series Long Box · PDF page 511
128.7 L 34.0 gal
See every quote (2 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 1500 Series Standard and Short Box | 26.0 gal | “98.4 L 26.0 gal” | PDF page 511 ↗ |
| 1500 Series Long Box | 34.0 gal | “128.7 L 34.0 gal” | PDF page 511 ↗ |
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