⚠️ Chevrolet manufacturer position
GM service information covers module access or tank drop on body-on-frame SUV platform. Wrong fuel excluded from warranty.
Vehicle information
| Make | Chevrolet |
|---|---|
| Model | Trailblazer |
| Market status | Sold new in the UK approximately 2012–2017 (Chevrolet brand withdrawal) |
| Body styles | SUV |
| Generations | RG series (Colorado-based SUV) |
| Engine options | Petrol: Petrol variants rare in UK official range Diesel: 2.8L Duramax diesel (primary UK spec) |
| Fuel tank capacity | Approximately 76 litres |
| Fuel system | GM diesel common rail on UK diesels |
| Access method | Often tank drop or under-seat module — consult GDS2 procedure for RG Trailblazer |
| Anti-siphon | Yes |
| Service portal | GM GlobalConnect / GDS 2 (dealer) |
Misfuel risk High
Large SUV diesel tank — petrol in diesel is a frequent misfuel pattern at green-handle pumps.
If the engine was not started
Do not crank. Arrange recovery. Drain diesel tank before attempting start; replace filters if petrol entered the module.
If the engine was started
If run on petrol-contaminated diesel, inspect high-pressure pump and injectors; GM may recommend component replacement.
Access procedure
- Do not start engine.
- Depressurise diesel system.
- Disconnect battery.
- Access pump module or lower tank per GM manual.
- Drain and segregate contaminated diesel.
- Replace fuel filters.
- Bleed and test for leaks.
Notes
- UK model is the body-on-frame SUV, not the later US compact Trailblazer crossover.
Related models
- Captiva
- Colorado (not UK new)
Frequently asked questions
Trailblazer vs US Trailblazer crossover?
UK Trailblazer is the larger Colorado-based SUV, not the newer US compact crossover.
Put petrol in Trailblazer diesel — drive?
No. Recover without cranking to protect the high-pressure pump.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance