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  1. 01-04.5 LB7 Duramax Powertrain
    I replaced my turbo with a 64 mm recently on my 2002 lb7 and while test driving I gave her quite a bit of beans and it sounded like something broke/came loose. Now ever since in drive it will make a knocking or loud ticking noise in drive when I get it up to about 2500 rpms. Does not do it while...
  2. 2020+ (Non Powertrain)
    Does anyone else get a crackling or ticking, 3-5 per instance, from center dash (climate control?) intermittently about every 10 minutes? Pretty faint but definitely audible if you don't have radio on or up too loud. I dont think anything is wrong but it's annoying. It almost sounds like small...
  3. General Discussions
    Over the last several weeks my driver's side rear is making the most ridiculous sound. I've attached a YouTube link where I attached a GoPro underneath. I've tried silicone lube on the leafsprings with no improvement. Dealer pressure washed and said it was likely dirt but didn't help at all...
  4. 01-04.5 LB7 Duramax Powertrain
    Hey y’all, looking for help and ideas on a new problem that just started: On the night of Independence Day I was parked in a ditch for a party, and as I was leaving I threw it in 4WD High to pull out, and backed out of the ditch and onto the driveway at a tight angle with the wheel cut all the...
  5. 11-16 LML Duramax Powertrain
    Hey everybody 2011 3500hd I have a very loud and obnoxious noise coming from the firewall area at the turbo. Starts around 1200rpm and almost changes frequencies when I’m driving. Even when the cruise is set, it’ll change from low to high back to low. Like a squeal/whistle. I thought for sure...
  6. 06-07 LBZ & LLY Duramax Powertrain
    My ‘06 has a rattle at about 1000 RPMs. I’ve only noticed this after swapping out a cracked number 6 piston (Didn’t pull motor). I checked my balance rates and all seems good, original injectors 173k miles. But during my search I noticed that a bolt on the bottom passenger side of the bell...
  7. General Discussions
    I’ll make this quick and simple, need some help. Has anyone experienced this? What could it be? 2002 LB7 EFI live Not much done to engine when I start the truck cold, there’s a weird cricket like noise coming from back of engine/tranny area. I can’t pinpoint it. This noise seems to go away...
  8. General Discussions
    Any issues with getting into National Parks with a deleted truck? Thanks
  9. 06-07 LBZ & LLY Duramax Powertrain
    Hello All! New to the forum and decided to reach out after looking over a bunch of items. 2006 LBZ (210,000 miles) with 4" straight exhaust is making a new noise since doing some aggressive trails about a week ago. This is the exact sound at 15 seconds: I've been driving this truck for close...
  10. 2016 Chevy 2500HD Duramax

    My truck makes a howling noise at 40-50 mph. Vent? I can’t figure it out comes and goes
  11. Interior
    On my 03 when the fan is on setting 3 or higher (it gets louder the higher the setting), I can hear a roaring noise under the dash. It only makes the noise when the recirculation is on. If you turn it off it quits when you turn it on it starts right away again. We have another 03 at work that...
  12. 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...
  13. 04.5-05 LLY Duramax Powertrain
    I have a 2004.5 duramax with the lly. I just bought the truck with 130,000 on it it runs awsome but I have a knocking or clicking noise under half throttle accelerating form 55 mph. It is really bothering me and don't know wat to do if u really step in to it when the turbo spools up it goes way...
  14. 2007.5 + (GMT 900) Non Powertrain New Body Style
    I recently had a lift put on my '08 GMC, and now the front brakes are constantly squeaking even when I'm not applying the brakes. It seems like there is always pressure on the front brakes. I have to make a trip tomorrow and would appreciate any help.
  15. 911 Problems Forum
    I recently had a lift put on my '08 GMC, and now the front brakes are constantly squeaking even when I'm not applying the brakes. It seems like there is always pressure on the front brakes. I have to make a trip tomorrow and would appreciate any help.
  16. 07.5-10 LMM Duramax Powertrain
    I have a Silverado 2500HD crew and a CST 6" lift with 35" tires installed after 5000 miles. I now have 52,000 on her. Never had any issues with the 4wd system until I was in heavy rain a couple months ago traveling about 40mph and switched in to 4 high. I heard a terrible roaring sound and...
  17. 911 Problems Forum
    I just got my AFE turbo mouthpiece and I have to say everthing looks good and seems to do better but install took me more time than I figured simply because it's a tight space and I got big hands but I definatly notice quicker spool or throttle response and now the negative after I installed it...
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