⚠️ Chevrolet manufacturer position
GM typically requires tank drop or chassis-specific access on midsize trucks—follow GMSI for VIN. Misfuel excluded from warranty.
Vehicle information
| Make | Chevrolet |
|---|---|
| Model | Colorado / Canyon |
| Market status | Sold new in the US 2004–present |
| Body styles | Midsize pickup truck |
| Generations | GMT31XX (2015–2022), 2023+ redesigned truck |
| Engine options | Gasoline: 2.5L, 3.6L V6, 2.7L turbo (model year dependent) Diesel: 2.8L Duramax four-cylinder diesel (2016–2022 US offering) |
| Fuel tank capacity | 21.0 gal (typical; diesel and gas per spec) |
| Fuel system | Gasoline injection or Duramax common-rail diesel; DEF on diesel emissions package |
| Access method | Tank drop or OEM-prescribed access—usually no rear-seat panel on pickups |
| Anti-siphon | Yes |
| Service portal | GM Service Information (GMSI) / ACDelco TDS |
Misfuel risk High
Gasoline-in-diesel on 2.8L Duramax is a frequent pickup misfuel scenario at US gas stations—do not start if gasoline entered the diesel tank.
If the engine was not started
Do not crank Duramax if gasoline was added; drain and inspect before priming.
If the engine was started
Diesel: HP pump and injector replacement likely. Gasoline: filter, pump, and line cleaning.
Access procedure
- Depressurize the fuel system per GM service information; disconnect battery negative.
- Access fuel module via under-seat/trunk panel or perform tank lowering if required for the platform.
- Disconnect electrical connector and fuel line fittings; use line plugs as specified.
- Remove lock ring and lift module; extract wrong fuel with approved recovery equipment.
- Inspect tank and lines; replace filters if contamination reached the engine supply circuit.
- Reinstall module with new seal; verify connections and perform leak check.
- Prime system and clear DTCs per GMSI before returning vehicle to service.
Notes
- GMC Canyon is mechanical twin—same fuel procedures.
Related models
- GMC Canyon
Frequently asked questions
When was the Colorado Duramax sold in the US?
The 2.8L Duramax was offered roughly 2016 through 2022—confirm engine code on the vehicle before assuming diesel.
Can I siphon a Colorado truck tank?
GM service information uses module or tank service procedures—not filler-neck siphoning—for certified remediation.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance