What is the fuel tank size of the 2012 Chevrolet Silverado?

1500 Series Standard and Short Box: 26.0 gal; 1500 Series Long Box: 34.0 gal; 2500 Series and 3500 Series Standard Box: 36.0 gal; 2500 Series and 3500 Series Long Box: 36.0 gal; 3500 Series Chassis Cab: 63.5 gal; 3500 Chassis Cab – Front Tank: 23.5 gal; 3500 Chassis Cab – Rear Tank (if equipped): 40.0 gal. Source: 2012 Chevrolet Silverado Owner's Manual.

2012 Chevrolet Silverado Fuel tank size

2011 Chevrolet Silverado, representative photo — Shown: a 2011 Chevrolet Silverado (same generation). Photo: Elise240SX, CC BY-SA 4.0

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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
2500 Series and 3500 Series Standard Box 36.0 gal
2500 Series and 3500 Series Long Box 36.0 gal
3500 Series Chassis Cab 63.5 gal
3500 Chassis Cab – Front Tank 23.5 gal
3500 Chassis Cab – Rear Tank (if equipped) 40.0 gal

2012 Chevrolet Silverado Owner's Manual, PDF page 537

1500 Series Standard and Short Box 98.4 L 26.0 galOpen the manual at this page ↗Added Oct 15, 2026

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Fuel tank size · 1500 Series Standard and Short Box · PDF page 537
1500 Series Standard and Short Box 98.4 L 26.0 gal

Fuel tank size · 1500 Series Long Box · PDF page 537
1500 Series Long Box 128.7 L 34.0 gal

Fuel tank size · 2500 Series and 3500 Series Standard Box · PDF page 537
2500 Series and 3500 Series Standard Box 136.3 L 36.0 gal

Fuel tank size · 2500 Series and 3500 Series Long Box · PDF page 537
2500 Series and 3500 Series Long Box 136.3 L 36.0 gal

Fuel tank size · 3500 Series Chassis Cab · PDF page 537
3500 Series Chassis Cab 240.4 L 63.5 gal

Fuel tank size · 3500 Chassis Cab – Front Tank · PDF page 537
89.0 L 23.5 gal

Fuel tank size · 3500 Chassis Cab – Rear Tank (if equipped) · PDF page 537
151.4 L 40.0 gal

All versions

7 values

Applies to	Value	Manual says	Page
1500 Series Standard and Short Box	26.0 gal	“1500 Series Standard and Short Box 98.4 L 26.0 gal”	PDF page 537 ↗
1500 Series Long Box	34.0 gal	“1500 Series Long Box 128.7 L 34.0 gal”	PDF page 537 ↗
2500 Series and 3500 Series Standard Box	36.0 gal	“2500 Series and 3500 Series Standard Box 136.3 L 36.0 gal”	PDF page 537 ↗
2500 Series and 3500 Series Long Box	36.0 gal	“2500 Series and 3500 Series Long Box 136.3 L 36.0 gal”	PDF page 537 ↗
3500 Series Chassis Cab	63.5 gal	“3500 Series Chassis Cab 240.4 L 63.5 gal”	PDF page 537 ↗
3500 Chassis Cab – Front Tank	23.5 gal	“89.0 L 23.5 gal”	PDF page 537 ↗
3500 Chassis Cab – Rear Tank (if equipped)	40.0 gal	“151.4 L 40.0 gal”	PDF page 537 ↗

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Shown: a 2011 Chevrolet Silverado (same generation). Photo: Elise240SX, CC BY-SA 4.0

Original sourcePDF page 537

2012 Chevrolet Silverado Owner's Manual