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  1. 11-16 LML Duramax Powertrain
    Hi guys. My lml has been making this sound for about a year now. It doesn’t do it everytime I drive it, but when it does it’s after the truck is warmed up. Runs and drives perfectly. No one can seem to figure it out was just wondering if anyone has heard this before. Coming from right behind the...
  2. 2011-2016 (Non Powertrain)
    Hi guys. My duramax has been doing this for about a year and no one can figure it out. Runs and drives great. Daily driven, even under full throttle. Does it about half the time. Noise disappears as I drive. Has anyone heard this sound? Sounds like it’s coming from right behind the gmc emblem...
  3. General Discussion
    Need help if anyone can give me some insight on the noise. 03 lb7 making this noise in the morning on cold starts under 45 degree weather. After I drive it a mile down the road the noise goes away. Its a clicking whining noise coming from around Bell housing/oil pan/ bottom engine. Any help...
  4. 01-04.5 LB7 Duramax Powertrain
    hey everybody. i recently got this dmax lb7 and i was told that the injectors were replaced around 20000 miles ago. it is a retired formans truck from a local company here near me. anyways, i noticed a knock upon crusing speeds, so i took it the the dealership in hopes of getting new...
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