19: 1978 Chevrolet C/K Diesel
Like with the Tahoe Diesel, the diesel models that came before it didn’t do too well either. The C/K Diesel truck was not the most reliable thing on the road and the price to repair it haunted consumers for years. Although these trucks have picked up value in recent years it was not because of the drivetrain, that’s for sure. The C/K Diesel will be remembered for its awkward driving characteristics and lackluster reliability (via Diesel Place).
It took years for GM to launch a diesel-powered truck that could compete on a real scale. Modern GM trucks with diesel power plants are night and day better than they used to be. It was this example of why consumers had shifted to Ford during this period and the C/K would take years to recover its image. When you need a serious diesel-powered truck, you need it to be reliable and this just wasn’t.