GMC Suburban Gas Tank Size & Fuel Capacity by Year
37.0–42.0gal · 140–159 L
Across 10 model years (1990–1999), the GMC Suburban has used tanks from 37.0–42.0 gallons. The 1999 model holds 42.0 gallons.
Pick your model year
How the tank changed over the years
GMC Suburban tank size by generation
Model years with the same tank sizes, grouped. A change usually marks a new generation or a redesign.
GMC Suburban tank size by year
| Year | Tank | Liters | Best highway range | Trims |
|---|---|---|---|---|
| 1999 GMC Suburban | 42.0 gallons | 159 L | 714 mi | 12 |
| 1998 GMC Suburban | 42.0 gallons | 159 L | 714 mi | 4 |
| 1997 GMC Suburban | 42.0 gallons | 159 L | 714 mi | 4 |
| 1996 GMC Suburban | 42.0 gallons | 159 L | 714 mi | 4 |
| 1995 GMC Suburban | 42.0 gallons | 159 L | 672 mi | 4 |
| 1994 GMC Suburban | 42.0 gallons | 159 L | 672 mi | 4 |
| 1993 GMC Suburban | 42.0 gallons | 159 L | 672 mi | 4 |
| 1992 GMC Suburban | 42.0 gallons | 159 L | 672 mi | 4 |
| 1991 GMC Suburban | 37.0 gallons | 140 L | 592 mi | 4 |
| 1990 GMC Suburban | 37.0 gallons | 140 L | 629 mi | 4 |
Frequently asked questions
What size gas tank does the GMC Suburban have?
The 1999 GMC Suburban holds 42.0 gallons. Older years range from 37.0–42.0 gallons; the table has every year.
Has the tank size changed over the years?
Yes. The largest tank changed in 1992.