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  1. Stock LBZ CP3 limitations?

    General Discussion
    How much power can the stock cp3 fuel for?
  2. Blown LML, Replace With L5p?

    11-16 LML Duramax Powertrain
    We have a 2012 Silverado 3500 with at least 1 cracked piston. Does anyone know how difficult it would be to swap in a complete L5P? Or just swap in the short block? Is it even possible?
  3. Reduced Engine Power... sigh

    07.5-10 LMM Duramax Powertrain
    I've been chasing the Reduced Engine Power ghost with no codes for about 2 weeks now. I've dug through all of the forum posts on several websites as well as the LMM facebook pages so I won't bore you with all of what they've said. My truck specifically, after the key goes into the ON position...
  4. Cummins Conversion

    Diesels
    I need to know what i would need to do in order to get a common rail 5.9l cummins engine to work in a 2003 silverado 2500hd. i only really need to know about the electronics and computers. Or if anybody knows a place that does these conversions.
  5. Help

    911 Problems Forum
    Not a diesel mechanic. i was origanally working on a bad speed sensor, test drove the truck and on the way back #1,2,7,8 unjectors shut off. black smoke and hammering hard. I can shut #2 injector off with the scanner and it runs fine! Im thinking stuck open injector, but wondering if there is a...
  6. Mass Air flow sensor?

    04.5-05 LLY Duramax Powertrain
    I have a 2004.5 LLY that I just found out my mass air flow sensor was not working, but it never threw a code or check engine light? How can this be?
  7. Front seal???

    911 Problems Forum
    Alright guys so for the last day or so I have been changing out my water pump because of large amounts of coolant I've been finding under the truck on the passenger side and down the frame and a arms on the driver side. Knew it was not the heads so jumped right into the waterpump. But when I...
  8. Accelerator sticking wide open

    07.5-10 LMM Duramax Powertrain
    Has anyone ever had there accelerator stick wide open. I have a 2006 Gmc 3500 Duramax and I was in reverse and when I goosed the throttle it stuck wide open and I had to shut the key off to get it to reset. when I turned the key back on it had reset to an idle but in the mean time I jumped a...
  9. Need some startup help!!!!

    911 Problems Forum
    Hi everyone new here and was wondering the best way to start up my engine after head gaskets. Think I'm ready after a week of playing the what bolt goes where game. What happend was bad luck bought the truck from my dad 3 months ago and he had a extended warrenty on it that sucked and wouldnt...
  10. Waste Gate Arm

    911 Problems Forum
    I am installing a banks big head waste gate, It says to move the waste gate arm to the full closed position. Is that pushing it towards the cab? or pulling it towards the radiator?
  11. Knocking Noise That can't be the Typewriter tic

    01-04.5 LB7 Duramax Powertrain
    I Just bought a 2003 last month or so with 95,000 miles on it. after a week of owning it i noticed a ticking noise coming from the motor (right after i changed the oil). It was very loud and noticible, It drowns out the engine noise and it happends most when engine is warm accelerating around...
  12. turbo spool

    911 Problems Forum
    hey guys, just wanting to ask a question before i get on the road so i can get replys to my phone. I have an 02 dmax and i was just wonderin about the turbo spool up. if i sit at a light and try to spool my tires spin before i even hear the turbo...its bone stock. is there somthin wrong or is it...
  13. Camshaft indexing

    911 Problems Forum
    One of our work trucks, a 2002 Isuzu FTR, with a 6HK1 overhead cam, GM Duramax, needed some work done to it, so I removed the head and the machine shop did a reconditioning job on it. I have everything back together, but don't know how to line up the cam. I found one tooth on the cam with the...
  14. lights and chimes going off and overheating,

    911 Problems Forum
    If you don't consider this a 911 then I'm truely sorry, but the truck is about 500 miles away and keeps overheating, a little background, 2004 GMC Kodiak with the 6.6 Duramax, had it in earlier in the week for check engine light and no power, turned out 1 injector was shot and 3 weak, so...
  15. stumped...lost...????

    911 Problems Forum
    04 LB7, had a burnt exhaust valve so i had heads fixed and i put it back together with ARP head studs, also put reman injectors in. ran the truck for about 3000 miles since and the engine started getting louder and was hard starting, had to turn over alot to fire up. now it wont start at all...
  16. i made a booboo

    911 Problems Forum
    ok well i was like 3 minutes away from getting done with doing injectors on a 2002 LB7 and i went to put the alternator in and the ear for the alternator broke off the alternator bracket. does anyone know if it can be welded or does anyone have one that i cant buy. i need this ASAP thank you...
  17. Starter Ring Gear

    911 Problems Forum
    Need to find a starter ring gear for a 2004.5 Duramax with the Allison. GM out til July 11th. Any help would be appreciated. Thanks
  18. its official, im pissed

    911 Problems Forum
    Ive been hearing a knocking sound for a while when crusing at around 60mph and 1800-1900rpm. Didnt think to much of it as it would do it once in a while and wasnt loud. While driving home from work tonight i got on it a little and in the process of shifting (manual trans) i heard a wierd noise...
  19. Does anybody else have this problem?

    911 Problems Forum
    I don't know if this is something common or if I am just the lucky one but about a month ago my oil filler cap fell off and I blew oil all overe the engine bay. So went and bought a new filler cap and it did the same thing so I put the old one back on and it did it again yesterday. So far it has...
  20. lb7 won't start or even turn over, but has all lights!

    911 Problems Forum
    When i put the key in to start my lb7, all the lights and my edge and my radio come on like normal, but once i turn it to start it...nothing! I can get it started after cycling it a few times usually. I cleaned the terminals on my batteries and no change. It doesn't do this everytime, it's...
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