⚠️ Chevrolet Trailblazer — High misfuel risk
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.
⚠️ Chevrolet position — Trailblazer
GM service information covers module access or tank drop on body-on-frame SUV platform. Wrong fuel excluded from warranty.
Vehicle information
| Specification | Details |
|---|---|
| Make | Chevrolet |
| Model | Trailblazer |
| Market status | Chevrolet-badged Trailblazer was not sold new in New Zealand; the similar Holden Trailblazer SUV was. This page covers Chevrolet-badged examples (imports) and shared GM SUV hardware. |
| Body styles | SUV |
| Generations | RG series (Colorado-based SUV) |
| Engines | Petrol: Petrol variants rare in NZ official range; Diesel: 2.8L Duramax diesel (primary NZ spec) |
| Fuel tank capacity | Approximately 76 litres |
| Fuel system | GM diesel common rail on NZ diesels |
| Access method | Often tank drop or under-seat module — consult GDS2 procedure for RG Trailblazer |
| Anti-siphon | Yes |
| OEM service portal | GM GlobalConnect / GDS 2 (dealer) |
OEM 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.
Additional notes
- NZ-new family SUV was typically Holden Trailblazer (RG), not Chevrolet badging.
- North American compact Trailblazer crossover is a different vehicle from NZ Holden Trailblazer — confirm identity before quoting tank capacity.
Frequently asked questions
What should I do if I put petrol in my Chevrolet Trailblazer diesel?
Do not start the engine or turn the ignition on (diesel priming pumps can activate). Have the tank drained and the fuel system inspected by an NZIFDA-certified technician using OEM service information. Contaminated fuel must be handled as a hazardous substance under HSNO Act 1996 and disposed of per regional council requirements (Resource Management Act 1991) and the Waste Minimisation Act 2008.
Can I drive my Chevrolet Trailblazer after a small amount of wrong fuel?
No — even a small amount of petrol in a diesel common-rail system can damage the high-pressure pump and injectors. Follow the OEM drain-and-flush procedure before driving.
Will misfuel damage void my Chevrolet warranty in New Zealand?
Manufacturer warranty terms typically exclude damage from incorrect or contaminated fuel. Keep invoices from an authorised repairer or NZIFDA-certified operator; consumer disputes may go to the Disputes Tribunal or Motor Vehicle Disputes Tribunal under the Consumer Guarantees Act 1993 and Fair Trading Act 1986.
Where is the fuel pump access on a Chevrolet Trailblazer?
On many NZ-new and used-import examples, access is via a service panel under the rear seat or in the luggage area — confirm in OEM workshop data for your chassis code. Saddle-tank designs may need both modules drained.
Need certified fuel contamination service?
Find an NZIFDA certified operator or read consumer guidance on wrong-fuel incidents.
Find an operatorFor consumers