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my s10 does the same thing. 4.3 with 700 trans.
not as bad as what your saying but i notice it basically only a mile after start up. i did a tuneup and it helped for like a month and started doing it again lol.
my fuel lines are all kinda rusty so im going to be making up new lines with a fresh fuel fliter and pump. hope that helps me as idk how old that fuel filter is.
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Eric
07 Silverado 1500 5.3
01 Z28 6 speed
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