Yes, it certainly could be the fuel filter, but if the problem goes away ABOVE 50 mph be suspicious of other problems. Perhaps the throttle position sensor. Go ahead and change the fuel filter and if the problem persists run a diagnostic test. A 1999 should be "OBDII" (On Board Diagnostics revision 2) and you should be able to learn quite a bit of information about the vehicle by reviewing the results of the test. You can ususally rent or borrow a code scanner from an auto parts retailer.
could be fuel filter
It could be a plugged fuel filter. Or a plugged catalatic converter. Or a weak coil
Could be a plugged fuel filter.
It could be several things, but first I'd change the fuel filter, possibly drain the tank if there is alot contaminants in it. On_mitch
One reason that a 2000 GMC Jimmy engine stalls while driving could be your filter needing to be changed. The problem could also be a bad sensor.
Could be a plugged up fuel filter.
it could be a bad fuel filter and fuel pump
There would be a number of reasons why a car might jerk while you are driving. Your fuel filter could be clogged, something might be wrong with your carburetor, or your fuel pump.
Could be a fuel delivery problem like a plugged fuel filter.
It would eventually get stopped up. When this happens while driving it could be really bad!
Depending on the make of the vehicle, it could be any number of things. It could be a plugged fuel filter, air filter, vacuum leak, ignition problems, etc.
Replace the fuel filter and have the ignition module checked.