Engine And Engine Cooling Related Problems of the 2026 GMC Sierra 2500

Table 1 shows one common engine and engine cooling related problems of the 2026 GMC Sierra 2500.

Table 1. Engine And Engine Cooling related problems of GMC Sierra 2500

Problem Category	Number of Problems
Engine And Engine Cooling problems	1

Engine And Engine Cooling problem

I recently purchased my vehicle from big star dealership in baytown TX. At a little over 1000 miles I was towing a camper. The vehicle stalled, fuel pouring from engine. It was towed and repaired due to fuel pump failure. At a little over 3000 miles the vehicle would not start. Dealership initially said water contamination then changed it and said gasoline contamination and now they say def contamination. The vehicle stalling the first time almost caused me to wreck the vehicle.

Engine And Engine Cooling related problems in other GMC Sierra 2500 model year vehicles:

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☘ Sierra 2500 Service Bulletins

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☤ Sierra 2500 Defect Investigations