2026 GMC Sierra 1500 Fuel tank size
28.3gal
Long Box
2026 GMC Sierra 1500 Owner's Manual, PDF page 407
28.3 galOpen the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Fuel tank size · Long Box · PDF page 407
28.3 gal
See every quote (1 value)
As printed in the manual
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| Long Box | 28.3 gal | “28.3 gal” | PDF page 407 ↗ |
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