The S series has a few problems that seem to happen to most of them over time. However they are not any worse than most of the others. One thing to remember is that the S series started back in 83 and didn't stop until 2004. There are many millions of them out there, far more than many other makes of small truck.
One of the bad items is the intake manifold gasket. There is a newer design out there that holds up much better.
Another item is front hubs and ball joints. Mainly because they are undersized for the vehicle.
The humming you hear is quite likely a hub. When you replace it don't shop by price. Look for either OEM or a high quality aftermarket.
There are a few other quirks but they happen to other trucks/makes as well (heater core leaks, control motors, front axle interlocks)
At least in this case you have support.
Friday, December 4th, 2009 AT 10:39 PM