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1-9 of 9 Results
  1. General Discussion
    Looking for some advice on what my issue could be. The truck had shut off while running It had prime but I went ahead and cracked the bleeder screw and re primed it after doing that it finally started back up felt a decrease in power between that night and the next morning. I did a oil change...
  2. 911 Problems Forum
    Hello! So I’ve got a 2007 LBZ no aftermarket. Yesterday it ran beautifully but decided to change the oil since I had recently bought it. I changed the oil to rotella T4 15w40 and used a Mobil 1 filter, after changing it had a slight abnormal vibration and the oil pressure was reading 60 at...
  3. Maintenance
    My truck is a 2007 LBZ. I ad changed my oil to shells rotella 15w40 T4 and used a Mobil 1 filter. After doing so my oil pressure shot up to 60 psi at idle and it was previously at 25ish, threw me off. I had realized the truck seemed off with abnormal vibrations and such so I let it go for a...
  4. General Discussion
    Hi guys, I’ve been chasing a noise recently. One is coming from my oil pan and humms / buzzes like an LML with a bad oil pump. However I can’t find anyone who has the same problem on an Lbz. Should I change my pump? Or is it normal? Please let me know!
  5. 06-07 LBZ & LLY Duramax Powertrain
    I have just replaced my CP3 pump and all seems to be fine except I have a new noise that has developed. When I put the engine under a load (like going up a good hill or hammering on it) I can hear a distinct whine. It is not normal turbo whine it sounds more like a powersteering pump low on...
  6. 01-04.5 LB7 Duramax Powertrain
    Starts up with ease no matter the temperature (has started with ease without being plugged in when the temp was around 10 degrees F). No smoke when starting (unless cold/ engine temp below 120 on temp gauge). White smoke when I accelerate quickly getting on the highway (when engine temp is...
  7. 01-04.5 LB7 Duramax Powertrain
    hello, i recently purchased my 02 gmc dmax zf6, and i have been noticing a odd noise after shutoff. i do realize most diesels make noise specially when they have higher milage (220,000kms in mine), but this sound is starting to worry me. its kind of a clunking slapping sound, lasts about 2...
  8. 911 Problems Forum
    hey guys just droppin in for a quick question before i got on a trip. i dont know if im just paranoid like i am with all my vehicles, or if its a problem. When its sitting there idling it sounds fine then every few seconds there will be 3-4 ticks just tick tick tick then it stops, and it will do...
  9. 06-07 LBZ & LLY Duramax Powertrain
    I have an 06 LBZ which at 1300 rpm makes a hissiing/sucking sound. It does not make the sound at 1350 or above or at 1250 and below. I had it in to GM and they replace a tube which I couldn't get a description on and that was supposed to fix it. Well no fix and sound still present. One of the...
1-9 of 9 Results
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