2014 GMC Sierra Denali 2500HD/3500HD Fuel tank size
Depends on your version. Choose yours, or compare them here.
- 2500HD/3500 Series 36.0 gal
- 1500 Series 26.0 gal
36.0gal
2500HD/3500 Series
26.0gal
1500 Series
2014 GMC Sierra Denali 2500HD/3500HD Owner's Manual, PDF page 426
2500HD/3500 Series 136.2 L 36.0 galOpen the manual at this page ↗Added Oct 15, 2026
See where it's printed
Fuel tank size · 2500HD/3500 Series · PDF page 426
2500HD/3500 Series 136.2 L 36.0 gal
Fuel tank size · 1500 Series · PDF page 426
1500 Series 98.4 L 26.0 gal
2014 GMC Sierra Denali 2500HD/3500HD Owner's Manual, PDF page 426
2500HD/3500 Series 136.2 L 36.0 galOpen the manual at this page ↗Added Oct 15, 2026
See where it's printed
Fuel tank size · 2500HD/3500 Series · PDF page 426
2500HD/3500 Series 136.2 L 36.0 gal
2014 GMC Sierra Denali 2500HD/3500HD Owner's Manual, PDF page 426
1500 Series 98.4 L 26.0 galOpen the manual at this page ↗Added Oct 15, 2026
See where it's printed
Fuel tank size · 1500 Series · PDF page 426
1500 Series 98.4 L 26.0 gal
See every quote (2 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 2500HD/3500 Series | 36.0 gal | “2500HD/3500 Series 136.2 L 36.0 gal” | PDF page 426 ↗ |
| 1500 Series | 26.0 gal | “1500 Series 98.4 L 26.0 gal” | PDF page 426 ↗ |
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