2002 Chevy 1500 runs rough at 45 to 60mph?

tragesser2003

New member
At 45 to 60 it has a lunging. The tack jumps. I have had it looked at by to garages. They say they dont know whats wrong. New plugs and cap and wires still doing it. took it to AAMCO. They say Trans is ok. No alarm codes and no warning lights.
Not tring to sell just get it running smooth
it seams to get worst when the fule gets below 1/4 to 1/2 tank
 
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