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  1. 01-04.5 LB7 Duramax Powertrain
    I have a "chatter" noise coming from the passenger's side of my engine, you can hear it best if you crouch down by the front right tire and listen through the wheel well... The sound only seems to speed up slightly with the rpm, it's consistent no matter the engine temperature... It...
  2. 911 Problems Forum
    I have a 2005 LLY, 4WD, Crew Cab with a 5 speed allison. The gear selector at the column was acting up, not going into park for several seconds, and would not go into 1st or 2nd at all. I changed the NSBU switch thinking it would fix my problems. It fixed the slow park engagement, but it still...
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