2005 GMC T Series Fuel Tank Size
2005 GMC T Series fuel tank size: 50.0 gallons (Standard tank) or 75.0 gallons (Optional tank) or 100.0 gallons (Optional two 50-gallon tanks (not applicable…
Depends on your version. Choose yours, or compare them here.
- Standard tank 50.0 gallons
- Optional tank 75.0 gallons
- Optional two 50-gallon tanks (not applicable to 128 inch or 140 inch wheel base) 100.0 gallons
50.0gallons
Standard tank
75.0gallons
Optional tank
100.0gallons
Optional two 50-gallon tanks (not applicable to 128 inch or 140 inch wheel base)
2005 GMC T Series Owner's Manual, PDF page 235
50.0 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Standard tank · PDF page 235
50.0 gallons
Fuel tank size · Optional tank · PDF page 235
75.0 gallons
Fuel tank size · Optional two 50-gallon tanks (not applicable to 128 inch or 140 inch wheel base) · PDF page 235
100.0 gallons
2005 GMC T Series Owner's Manual, PDF page 235
50.0 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Standard tank · PDF page 235
50.0 gallons
2005 GMC T Series Owner's Manual, PDF page 235
75.0 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Optional tank · PDF page 235
75.0 gallons
2005 GMC T Series Owner's Manual, PDF page 235
100.0 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Optional two 50-gallon tanks (not applicable to 128 inch or 140 inch wheel base) · PDF page 235
100.0 gallons
See every quote (3 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| Standard tank | 50.0 gallons | “50.0 gallons” | PDF page 235 ↗ |
| Optional tank | 75.0 gallons | “75.0 gallons” | PDF page 235 ↗ |
| Optional two 50-gallon tanks (not applicable to 128 inch or 140 inch wheel base) | 100.0 gallons | “100.0 gallons” | PDF page 235 ↗ |
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