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  1. R

    Need some guidance

    I have a fully deleted 2012 GMC LML that just had the head gaskets replaced and did the CP3 upgrade. I had a static coolant leak got the head gaskets replaced and when I picked up my truck the coolant level, when cold was setting even with line in the picture. All is running well no issues at...
  2. R

    White smoke on start

    I have a 2012 GMC Duramax LML that I just got out of the shop for a head gasket change and CP3 upgrade and I noticed on start up in the morning I’m getting a puff of white smoke, is this normal? Sent from my iPhone using Tapatalk
  3. R

    Shop time to replace a CP4 with CP3

    How much labor time does it take to replace a CP4 pump vs the labor time to replace the CP4 with a CP3 kit that is tuned? Sent from my iPhone using Tapatalk
  4. R

    2012 GMC LML won’t start, have CP3 upgrade questions

    I have a 2012 GMC 250hd with 150k is deleted and in the shop for head gasket replacement because of a coolant leak on the passengers side. All was well until I was told the exhaust manifolds were warped, which I kind of expected from talking to other owners. I expected a call that my truck was...
  5. R

    LML head gasket R&R

    I have a 2012 GMC 2500hd LML with 150k deleted and it’s in the shop to replace the head gaskets. Is there a break in period for new head gaskets before towing my big rig 5th wheel (Grand Design 348M)? Sent from my iPhone using Tapatalk
  6. R

    Can Heavy towing blow the engine?

    Can heavy towing cause my LML to blow a head gasket with All other parameters are good and no other issues. Sent from my iPhone using Tapatalk
  7. R

    Anyone else having issues with new water pumps

    Well I noticed antifreeze under my truck again and after investigating I found fluid leaking from the water pump weep hole. Apparently this only leaks when static, with no pressure. This is my 5th water pump since I have done the delete during COVID. I cannot get a good water pump. Or can...
  8. R

    Bad water pumps?

    In recently changed my water pump three times because of bad pumps Has anyone experienced issues getting pod parts. I checked my truck today and dammed thing is not leaking again. Any suggestions on where I can get GMC OEM water pump? Sent from my iPhone using Tapatalk
  9. R

    Going back stock from DEF delete

    I have a 2012 GMC def and EGR deleted LML has anyone put there deleted LML back to stock and what are the issues and cost? Sent from my iPhone using Tapatalk
  10. R

    Can I get a custom tune for an H&S Tuner?

    I did a delete on my 2012 GMC 2500hd LML and having cooling issues. Is there someone who can do custom ties for my LML using an H&S tuner? Sent from my iPhone using Tapatalk
  11. R

    Did LML def and complete EGR delete new radiator and Intercooler and still overheating

    I have a 2012 GMC 2500HD that is def deleted using an H&S tuner. I replaced the radiator and Intercooler with Mishimoto radiator and Intercooler. Since I have tried to tow my 2017 Grand Design 5th wheel and every time I get into overheating conditions. Before I did the complete EGR delete and...
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