1996 GMC G3500 Engine: 5.7L V8 CNG; EngineVIN: K; FuelSystem: TBI; Electronic; Position: Front;. 1996 GMC G3500 Engine: 5.7L V8 GAS; EngineVIN: K; FuelSystem: TBI; Electronic; Position: Front;. 1996 GMC G3500 Engine: 7.4L V8 GAS; EngineCode: L29; EngineVIN: J; FuelSystem: MFI; Electronic; Position: Front;.
