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Need some guidance
I got a new tank and it only has one mark (see picture) near the top of the tank. My question is, is this a low level when the truck is at operating temperature? If so, do I just not worry about the level when cold as long as the level stays above the min mark when at operating temperature... -
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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... -
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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 -
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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 -
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2012 GMC LML won’t start, have CP3 upgrade questions
I have a 2012 GMC 2500hd deleted with an H&S mini Max tuner. My CP4 pump just quit working so I’m going to do the CP3 upgrade. Has anyone with the H&S tuner had issues with this upgrade, and will I need a special tune to get the CP3 conversion to work with my H&S stock tune? Sent from my... -
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2012 GMC LML won’t start, have CP3 upgrade questions
Yup highly recommend Sent from my iPhone using Tapatalk -
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2012 GMC LML won’t start, have CP3 upgrade questions
The shop said there is no contamination in the system and changed both regulators. They said during troubleshooting they hooked up an external source to isolate the pump and it still would not pump. They did not say anything about cracked pistons. I will replace with a CP3 fir shire but diesel... -
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2012 GMC LML won’t start, have CP3 upgrade questions
Do you need to run a lift pump when you do a CP3 conversion on an LML? Which CP3 conversion kit should I buy if I want to run stock power on my deleted 2012 GMC LML? Sent from my iPhone using Tapatalk -
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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... -
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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- rrh13441
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- Forum: Duramax Engine Building
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Can Heavy towing blow the engine?
I tow a grand design 348 M that has specs of Dry Weight 13,400 lbs., GVWR 16,500 lbs., Hitch Weight 3,100 lbs. I have a 2012 GMC Sierra 2WD Crew Cab Duramax LML with 130K that has the exhaust and EGR deleted, and an H&S Performance Mini Maxx Tune. when i did the delete I changed out the... -
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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 -
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Anyone else having issues with new water pumps
An anyone tell me the difference between GMC OEM, Gold or silver. Due to multiple water pump issues I want to make sure I don’t get junk again. Sent from my iPhone using Tapatalk -
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Anyone else having issues with new water pumps
I did pressure checks and the shop said no leaks and no head gasket the last time we swapped out the water pump. I’m going to have them do another pressure and head gasket checks first to verify if in fact it’s leaking through the wp weep hole and go from there. Sent from my iPhone using... -
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Anyone else having issues with new water pumps
Like what? This has done this ever since I did a delete and the egr as well. Sent from my iPhone using Tapatalk -
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Anyone else having issues with new water pumps
The last pump they put on they say was AC delco. Damn COVID bullshit. Sent from my iPhone using Tapatalk -
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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... -
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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 -
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Going back stock from DEF delete
The only reason is if my tuner craps out. Sent from my iPhone using Tapatalk -
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Going back stock from DEF delete
I only need the complete exhaust and complete stock EGR sill has everything else. Sent from my iPhone using Tapatalk