yup, 02 sensor was the prob. can't believe that something so small could cause so much of a problem. no wonder why its $130 off the net and $160-$180 marked up in any parts store... thats some bullsh*t.
this damn little thing made my whole truck rattle unless i gave er gas...
but yay! all fixed
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2003 Hummer H2 Vortec 6000 6.0, Air Susp Fully Loaded Pimper.
1991 Toyota Pickup 22re 4x4 3" body 5" susp 35x12.50's 150watt KC's 2.5" pacesetter, rancho steer/stab.