lean both banks

  1. C

    LEAN on both banks

    Hey Guys, Thanks for having this forum. I searched it and others on the internet and still didn't find an answer for my problem. Maybe someone in here has a known good answer? Here's what's going on... It's a 1998 Chevy Tahoe, 5.7L Vortec, 2wd, 4dr, front & rear A/C. It has no cats and the EGR...
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