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I changed the AIT already and no change.

Like I said in a previous post, if I let it warm up it will run a little better. But if I try to give it to much gas, sputter and die. It also smells like the engine is running really rich.

If I let it warm up it will run a little better, but it still does the sputter and die.

I have a 99 Tahoe and I live in Anchorage AK. When the temp gets down to 30-40 degrees, my tahoe starts to run rough. If I press the gas pedal down 1/4 to 1/2 the engine sputters and dies. When the temp gets below 10 degrees, I just have to barely tap the pedal and it sputters and dies. It does...