Just giggle it:
This VIN decodes to a 2008 or 2010 Chevrolet Silverado 2500HD (or 3500HD) Crew Cab built by General Motors. The 10th character ('8') indicates the model year, and the 'J'/'T' designates it as a heavy-duty truck equipped with either a 6.0L V8 or 6.6L Duramax Diesel engine.