2005 GMC Envoy , GMC Envoy XL and Envoy Denali Fuel Tank Size
2005 GMC Envoy , GMC Envoy XL and Envoy Denali fuel tank size: 21.7 gallons (Standard Wheel Base) or 25.0 gallons (Extended Wheel Base).
Depends on your version. Choose yours, or compare them here.
- Standard Wheel Base 21.7 gallons
- Extended Wheel Base 25.0 gallons
21.7gallons
Standard Wheel Base
25.0gallons
Extended Wheel Base
2005 GMC Envoy , GMC Envoy XL and Envoy Denali Owner's Manual, PDF page 456
21.7 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Standard Wheel Base · PDF page 456
21.7 gallons
Fuel tank size · Extended Wheel Base · PDF page 456
25.0 gallons
2005 GMC Envoy , GMC Envoy XL and Envoy Denali Owner's Manual, PDF page 456
21.7 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Standard Wheel Base · PDF page 456
21.7 gallons
2005 GMC Envoy , GMC Envoy XL and Envoy Denali Owner's Manual, PDF page 456
25.0 gallonsOpen the manual at this page ↗Added Oct 21, 2026 · Updated
See where it's printed
Fuel tank size · Extended Wheel Base · PDF page 456
25.0 gallons
See every quote (2 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| Standard Wheel Base | 21.7 gallons | “21.7 gallons” | PDF page 456 ↗ |
| Extended Wheel Base | 25.0 gallons | “25.0 gallons” | PDF page 456 ↗ |
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Confirm with your own manual, dipstick or door-jamb label.
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