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tsbelue's avatar
tsbelue
Explorer
Apr 11, 2016

2011-2015 Duramax injector pump failure.

Has anyone on this forum had their Duramax tow vehicle injector pump to fail from normal use (no programmer on the engine). I bought a 2012 and I am concerned about the expense of letting it fail or going ahead and upgrading to CP3 before the CP4 dies.

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  • 4x4ord's avatar
    4x4ord
    Explorer III
    Apr 13, 2016
    Many people around hear are running new diesels. I don't personally know of anyone who has had a pump failure. There are five Fords and two GMs with the CP4 pump in my family....no issues.
  • pressure_welder's avatar
    pressure_welder
    Explorer
    Apr 13, 2016
    Seamutt wrote:
    Bust a diesel engine, big big money. From what I have seen, never have a diesel outside of warranty no matter the make. Lots of them in my area, and the source of great income for the repair shops. Gas much cheaper to repair or replace compared to a diesel.


    Unfortunately I have also come to stand by this opinion quite strongly. My wife and I decided back in 2012 when we started driving full emissions equipped trucks that we wouldn't drive another diesel out of warrenty period. That's not to say you cant acquire a lot more trouble free miles on a truck without warrenty however testing that theory just isn't in our checque book! with how advance of technology and how utterly expensive it is to fix these items if they do happen is worth the monthly payment for peace of mind.

    As for the CP4 I cant speak from personal experience but we ran a 2012 denali dually, and a 2015 GMC dually both deleted and compiled about 120,000 trouble free KM between those two trucks... not a lot I know, but the trucks were strong, and we were very happy with them. We only acquired about 14,000km on the 2015 before we traded in on the 2015 ram dually.

    I HAVE however witnessed my father inlaws deleted 2015 GMC, with lift pump, running a stock HP tune grenade the CP4 at 12,000KM on the clock, crusing down the highway at 110km/h and it took out the entire fuel system. All said and done out the door it was a 16,000$ (Canadian) repair. He immediately did a CP3 conversion during the repair process. Because he was deleted warrenty wouldn't cover it, so we had our family friend do the work who owns a high end muscle car/fab shop. Quite frankly its down right scary just how much this **** costs to replace/fix

    In the end I would STILL buy another duramax... simply because they are amazing trucks and I know the chances are very slim that you would have a complete failure... My wife and I really like the switch to the RAM we made, for more of a change of pace than anything really as we've owned GM almost exclusively. Is it a better engine? I suppose its paid its dues as its been around for a long time, yes it does have a CP3 which is also paid its dues but at the same time that dosent mean it wont fail. HOWEVER I know that a CP3 wont puke its guts into the fuel system if it does blow.
  • 45Ricochet's avatar
    45Ricochet
    Explorer
    Apr 12, 2016
    My point was the company itself tells you the possible side effects using it just like the drug companies.
    Did you miss my :B or do some people need :B :B
    At any rate it falls into the Federal Emission laws which have stiff fines. Good luck trying to sell one that won't meet standards on the transfer.
    Believe me the CP.3 is the gold standard but the CP.4 is part of the emissions of the newer PSD and DMAX engines. Oh I forgot to mention the little V8 in the Titan :W
    Don't believe me? go ask VW :B
  • N-Trouble's avatar
    N-Trouble
    Explorer
    Apr 12, 2016
    45Ricochet wrote:
    N-Trouble wrote:
    Me Again wrote:
    45Ricochet wrote:
    There is a CP3 conversion?????? I wouldn't think so as the ECM expects certain PSI the CP3 can't deliver. Poor spray pattern on piston would almost certainly throw a CEL without a programing change.
    I wouldn't worry to much OP. Keep fresh fuel and drain filter often.
    The good side is GM has covered a portion of the repairs with truck out of warranty. I believe flyboy had this happen.


    http://fleeceperformance.com/fuel-system/injection-pumps/2011-2015-lml-cp3-conversion-kit-with-cp3-pump.html

    Chris


    And another http://www.wcfab.com/fuel-system-components/cp3-conversion-lml/index.html


    LOL Thats what I thought. A warning label that sounds like a pharmaceutical ad on television :B

    Here it is:

    WARNING

    This product is not legal in the state of California.
    When used incorrectly this product may violate local, state, and federal laws pertaining to emissions, traffic, registration, and safety.
    Use of this product may damage or destroy mechanical and/or electrical components of this vehicle.
    Use of this product may void or nullify the vehicles factory warranty.
    User understands that motorsports are dangerous, and that installation of this product may subsequently require special driving skills or techniques to safely operate the vehicle.
    User assumes sole responsibility for the safe, proper, and legal use of the vehicle at all times.
    The purchaser and end user releases, indemnifies, discharges, and holds harmless Fleece Performance Engineering, Inc. from any and all claims, damages, causes of action, injuries, or expenses resulting from or relating to the use or installation of this product that is in violation of the terms and conditions on this page, the product disclaimer, and/or the product installation instructions. Fleece Performance Engineering, Inc. will not be liable for any direct, indirect, consequential, exemplary, punitive, statutory, or incidental damages or fines cause by the use or installation of this product.
    This product may not work with the EGR cooler installed. It may need to be removed.
    This product MUST be used in conjunction with custom tuning calibrations from Fleece Performance. Failure to install the correct calibrations can result in engine damage.


    Whats your point...

    Lots of people on Dmax forum running CP3 conversions with zero issue.
  • GeoBoy's avatar
    GeoBoy
    Explorer
    Apr 12, 2016
    Me Again wrote:
    tsbelue wrote:
    Yep they do something to the pump so it works with the stock system. Industrial Injection conversion to CP3.


    http://www.industrialinjection.com/436401


    The way I look at is, GM is covering the drive train until 5 yrs./100,000 miles. If the pump fails within that period GM pays. After 100K miles, if you plan on keeping the truck have the above kit installed and enjoy your truck.
  • tsbelue's avatar
    tsbelue
    Explorer
    Apr 12, 2016
    If its illegal in California that's just more incentive for us to use it in Alabama. They done away with common sense in that state in the 70's and its not coming back. We love our freedom and our guns here in the south!
  • 45Ricochet's avatar
    45Ricochet
    Explorer
    Apr 12, 2016
    N-Trouble wrote:
    Me Again wrote:
    45Ricochet wrote:
    There is a CP3 conversion?????? I wouldn't think so as the ECM expects certain PSI the CP3 can't deliver. Poor spray pattern on piston would almost certainly throw a CEL without a programing change.
    I wouldn't worry to much OP. Keep fresh fuel and drain filter often.
    The good side is GM has covered a portion of the repairs with truck out of warranty. I believe flyboy had this happen.


    http://fleeceperformance.com/fuel-system/injection-pumps/2011-2015-lml-cp3-conversion-kit-with-cp3-pump.html

    Chris


    And another http://www.wcfab.com/fuel-system-components/cp3-conversion-lml/index.html


    LOL Thats what I thought. A warning label that sounds like a pharmaceutical ad on television :B

    Here it is:

    WARNING

    This product is not legal in the state of California.
    When used incorrectly this product may violate local, state, and federal laws pertaining to emissions, traffic, registration, and safety.
    Use of this product may damage or destroy mechanical and/or electrical components of this vehicle.
    Use of this product may void or nullify the vehicles factory warranty.
    User understands that motorsports are dangerous, and that installation of this product may subsequently require special driving skills or techniques to safely operate the vehicle.
    User assumes sole responsibility for the safe, proper, and legal use of the vehicle at all times.
    The purchaser and end user releases, indemnifies, discharges, and holds harmless Fleece Performance Engineering, Inc. from any and all claims, damages, causes of action, injuries, or expenses resulting from or relating to the use or installation of this product that is in violation of the terms and conditions on this page, the product disclaimer, and/or the product installation instructions. Fleece Performance Engineering, Inc. will not be liable for any direct, indirect, consequential, exemplary, punitive, statutory, or incidental damages or fines cause by the use or installation of this product.
    This product may not work with the EGR cooler installed. It may need to be removed.
    This product MUST be used in conjunction with custom tuning calibrations from Fleece Performance. Failure to install the correct calibrations can result in engine damage.

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