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1-5 of 5 Results
  1. General Discussion
    I bought my 3500 LT 4x4 the last day of June 2021, unbeknownst to me it had not had the CP4.2 pump replacement done I drove it daily until October and it took a huge crap of sorts. Now, all of you awesome people know what I am talking about and I only have 2 questions; 1. Does GM do...
  2. Performance Upgrades
    i am running a stock lift pump and on my efi tunes (especially my 90 & 150 tunes) it seems as though my truck has lost some speed. if i get into the pedal about 50% of the time it seems to be a bit slower and just laggish in general it also hazes smoke through acceleration. is this my fuel pump...
  3. 01-04.5 LB7 Duramax Powertrain
    The title says it all, it's broken off 3 times and no one can tell me what's causing it. This last time it actually broke the center of the pulley out, right around the p.s. pump shaft... Has anyone had this issue? Is there a fix? Is there anything I can check out? None of the other pulleys...
  4. 01-04.5 LB7 Duramax Powertrain
    Hi, I have a 2003 6.6 I have about 250,000. Replaced injectors and glow plugs about 4,000 miles ago. Really like this pickup. About a month ago, noticed kind of slugishness. Later that day, started poorly and barely got it in the garage. Been sitting for a month while I was overseas. Came...
  5. Performance Upgrades
    Im looking at buying a PPE lift pump and it would help if I had some pictures of the install to go off of....Thanks guys!
1-5 of 5 Results