I got a 1998 GMC Sierra 1500 5.7 vortex, 4l60e true duals exhaust, but I can’t figure out how to do the o2 sensors, I would much rather bypass them if possible, cause it says there supposed to have 4 o2 sensors, but I can only find the ones for the 2 at the top, my motor just revs up and down at 30, but past 30 runs great till I drop back down to 30 again, and it spits and spudders when I go from dead stop to up hill, but I know there nothing wrong with Tranny, got it up to 120 last night no problem, got mad at and wanted to blow it, done bought 3 transmissions for it
I re-read this at least three times before I realized that it's only one, long sentence... something about O2 sensors at 120 uphill, tranny's OK though.
What's the one, motivating issue that you want to resolve. Please elaborate. One issue per posting, please.