About the Chevy Suburban 3500 Gas Tank
The Chevy Suburban 3500 was a rare low-production 1-ton heavy-duty variant that existed primarily 1973-1999 (round-body C/K era and GMT400 generation). DISCONTINUED for 2000+ Suburbans - modern Suburbans only come in 1500 (and 2500 from 1992-2013).
Engines common to Suburban 3500: 5.7L (350ci) small block V8 (most common), 7.4L (454ci) big block V8 (HD towing), 6.5L diesel V8 (predecessor to Duramax), 6.2L diesel V8 (earlier). Multiple fuel tank capacities (30-42 gallon typical), some with dual tank setups.
Cross-reference GMC Suburban 3500 sister vehicle (pre-2000, GMC eventually rebranded Yukon XL) and Chevy/GMC C/K 3500 pickup gas tanks of same era (shared chassis/fuel system architecture). Vintage specialty sourcing 14-30 business days. We inspect for leaks, corrosion, mounting integrity.
Suburban 3500 Generation Coverage
Round-Body Era 1973-1991
- Configuration: C/K platform shared with pickup trucks
- Production: Some 1-ton 3500 variants across multiple decades
- Engines: 350 small block, 454 big block, 6.2 diesel, etc.
- Applications: Government, commercial, specialty configurations
GMT400 Era 1992-1999
- Configuration: GMT400 platform shared with C/K pickups
- Production: Low-production C/K 3500 Suburban with HD chassis
- Engines: 5.7L Vortec 350, 7.4L Vortec 454, 6.5L diesel
Most common Suburban 3500 era in used market
Cross-Reference Sister Vehicles and Chassis Family
- GMC Suburban 3500: Pre-2000 GMC badge-engineered with Chevy
- GMC Yukon XL: Post-2000 rename of GMC Suburban (but no 3500)
- Chevy/GMC C/K 3500 Pickup: Same chassis era, gas tank cross-reference applies
- 1-ton HD applications: Various GM HD vehicles same era
Discontinuation Context
Modern Suburban variant history:
- 1973-1999: 1500, 2500, and 3500 variants available
- 2000-2013: 1500 and 2500 only (3500 discontinued)
- 2014-present: 1500 only (2500 also discontinued 2013)
- Modern Suburban: 1500 half-ton only, focuses on personal luxury
Vehicle Compatibility
Vintage Suburban 3500 Era and Cross-Reference:
| Vehicle | Compatibility |
|---|
| Chevy Suburban 3500 1973-1991 | Round-body C/K era |
| Chevy Suburban 3500 1992-1999 | GMT400 era (most common) |
| Cross-Reference GMC Suburban 3500 | Pre-2000 sister vehicle |
| Cross-Reference Chevy C/K 3500 Pickup 1973-1999 | Same chassis fuel architecture |
| Cross-Reference GMC C/K 3500 Pickup 1973-1999 | Same chassis fuel architecture |
| NOT Compatible Suburban 2000+ | Suburban 3500 discontinued |
| NOT Compatible Suburban 1500 1973+ | Different tank size/configuration |
| NOT Compatible Suburban 2500 1992-2013 | Different HD tank specs |
| NOT Compatible GMC Yukon XL 2000+ | 1500 only, no 3500 equivalent |
| Multiple Capacities 30-42 Gallon | Specify at order |
| Single or Dual Tank Configurations | Specify at order |
Condition and Inspection
- No major damage verified dents not compromising capacity
- No leaks confirmed critical for fuel system safety
- No significant internal corrosion inspected via fuel sender opening
- No external rust especially salt-belt era vehicles
- Mounting strap surfaces intact tank hangs from straps
- Fuel sender mounting hole integrity no stripping or damage
Vent connections functional
Filler neck connection intact
- Suburban 3500 generation verified round-body or GMT400
- Configuration verified single or dual tank
Capacity verified
- Donor vehicle disclosed variant, year, engine, capacity, mileage
Cleaned of debris
- Packaged in crate for large tank shipping
- For Chevy Suburban 3500 gas tank (rare 1-ton variant)
- Two-generation Suburban 3500 coverage (round-body and GMT400)
- Discontinuation context properly explained
- Cross-reference GMC Suburban 3500 sister (pre-2000)
- Cross-reference C/K 3500 pickup donors (same era)
- GMC Yukon XL rename history documented (2000+ no 3500)
- Multiple fuel capacity options (30-42 gallon)
- Single and dual tank configurations supported
- Engine compatibility (350/454/6.5 diesel/6.2 diesel)
- No leaks verified
- No major damage
- Mounting strap surfaces intact
- Internal corrosion inspected
- Authentic GM OEM
- Vintage Chevy/GMC HD specialist support
- Specialty vintage sourcing capability
- Crate packaging for fuel tank shipping
- 15 day replacement warranty
Cornelius Holbrook-Worthington
1970-01-01
Replacing the gas tank on my 1997 Chevy Suburban 3500 with the 7.4L big block (the rare HD configuration). Vaz confirmed the GMT400 generation and 7.4L engine specifically and sourced a tested tank from a 1996 GMC C/K 3500 pickup donor (cross-reference within same chassis era since the C/K 3500 pickup shared fuel architecture with Suburban 3500). No leaks verified, no significant corrosion despite the age. The cross-reference flexibility (Suburban 3500, GMC sister, C/K 3500 pickup) significantly
Tatiana Drobyshchenko
1970-01-01
Bought gas tank for my 1985 Chevy Suburban 3500 with 350 small block (round-body era). Vaz emphasized the variant identification since the 1500/2500/3500 distinctions are critical for these older trucks. Sourced from a 1986 GMC Suburban 3500 donor (pre-2000 sister vehicle, before GMC rebranded as Yukon XL). One star off because the tank arrived with some surface rust that wasn't fully disclosed - cleaned up but required more prep than expected before installation. The discontinuation history (35
I have a 2010 Chevy Suburban. Will this 3500 gas tank fit?
NO. The Suburban 3500 was discontinued after 1999 model year. Your 2010 Suburban is either a 1500 (most likely) or possibly 2500 (if HD variant, 2500 was available 1992-2013). The 3500 designation does NOT apply to your 2010 Suburban. Different generation, different platform, different fuel tank. You need a Suburban 1500 or 2500 specific gas tank for your 2010.
What years did the Suburban come in 3500 configuration?
The Chevy Suburban 3500 existed primarily 1973-1999 across two generations: round-body C/K era 1973-1991 (some 1-ton variants for HD applications) and GMT400 era 1992-1999 (low-production C/K 3500 Suburban with HD chassis). After 1999, the Suburban 3500 was DISCONTINUED. Modern Suburbans (2000-2013) came in 1500 and 2500. Modern Suburbans (2014+) come in 1500 only (2500 also discontinued 2013).
I have a 1995 GMC Suburban 3500. Will this Chevy version fit?
YES for cross-reference. The GMC Suburban 3500 (pre-2000) is the sister vehicle to Chevy Suburban 3500. Same vehicle, GMC badging. Gas tank cross-references directly between Chevy Suburban 3500 and GMC Suburban 3500 of same era. Note: starting 2000 model year, GMC rebranded their Suburban as 'GMC Yukon XL' (but no 3500 version - Yukon XL only came in 1500 and 2500).
My 1995 Chevy C/K 3500 pickup has the same era. Will the Suburban gas tank fit my pickup?
Possibly yes for cross-reference. The C/K 3500 pickup and Suburban 3500 of the same chassis era (1992-1999 GMT400) shared chassis architecture and fuel system designs. Gas tanks may cross-reference depending on specific configuration. Pickup bed-mount tanks vs Suburban underbody tanks may differ in shape, but core capacity/mounting may match. Verify with us before ordering - this cross-reference significantly expands sourcing for both directions.
What's the difference between Suburban 1500, 2500, and 3500?
Weight class designations for GM trucks: 1500 = half-ton (lightest, most common, personal use). 2500 = 3/4-ton (heavy-duty, towing, work). 3500 = 1-ton (heaviest HD, commercial, towing). Each class has progressively heavier-duty chassis, suspension, brakes, drivetrain, and larger fuel tanks. Suburban 3500 had largest tanks (typically 40+ gallon) and heaviest-duty drivetrain. Different fuel tanks for each class due to different mounting points and capacities.
My Suburban 3500 has two fuel tanks. Is this normal?
YES on some HD configurations. Some heavy-duty Chevy/GMC trucks of the 1973-1999 era had dual tank setups (front tank and rear tank) with selector switch on dashboard. This was more common on C/K 3500 pickup and longer-bed configurations. Some Suburban 3500 in HD/commercial configurations had dual tanks. Specify single or dual tank configuration at order - we'll source the correct tank for your specific configuration.
How do I install a vintage gas tank?
Significant work, should be performed at qualified shop with fuel system experience: (1) Drain existing tank completely (recommend transferring to gas can). (2) Raise vehicle safely. (3) Disconnect fuel lines (vent, filler, supply, return). (4) Disconnect electrical connections (fuel sender wiring). (5) Support tank with floor jack and remove mounting straps. (6) Lower tank carefully. (7) Transfer fuel sender to new tank (clean and inspect first). (8) Install new tank in reverse. (9) Use new clamps, gaskets, and seals as needed. (10) Refill carefully and test for leaks before driving. 3-6 hours typical.
How long does specialty vintage sourcing take?
For Suburban 3500 gas tank: 14-30 business days typical. We source from salvage yards with Suburban 3500 donors (rarer than 1500/2500 series), Chevy/GMC C/K 3500 pickup donors (cross-reference), GMC Suburban 3500 donors (sister vehicle), and vintage GM parts specialists. Sometimes faster if in stock, sometimes longer for specific configurations. Crate packaging for shipping adds preparation time.
