Will A Lb7 Ficm Work On A Lly, Sounds great Brayden! Now can you w

Will A Lb7 Ficm Work On A Lly, Sounds great Brayden! Now can you work on a way to convert a LB7 to LBZ with just a harness ECM and TCM its the samethe [03-04] LB7's and LLY's are so similar that converting any 03-05 truck to LB7 FICM EXCHANGE LLY FICM Exchange IMPORTANT INFO: Inadequate supply side voltage is a known cause of FICM damage. Im Has anyone done this? If I understand correctly the parts needed include: LLY tuned ECU LLY heads LLY fuel rails LLY return lines LLY injectors and a gasket kit. The truck just doesn’t sound right when turning over. You need a 04. 6L LB7 FICM Models The 2001-04 Duramax 6. Everything went great with the install. The thread you're thinking about was using an LLY top end on an LB7 short block with LB7 electronics. Can it be done? and what would it cost and would I be able to have everything else work? since the protocol is different I'm guessing it wouldn't but figured I would check. I have a 2004 lb7 that I put injectors in a while ago and I have a miss that happens when the engine is idling while transmission is in gear and truck is creeping about walking speed. I am very familiar with the injector harness issues and running issues as this is my 3rd lly truck. 8 MPa(145-261 PSI) LB7 and LLY, or 0 PSI LBZ and LMM. I am currently running all LB7 electronics, the tech that I have commissioned to retune with his EFI live loaded a tune they sent to him for this application but it didn't fix the The communication Style is different. it seems some trucks that have a lift pump with over 12psi can cause a lopey idle. If LB7 Injectors will install in the LLY heads (As well as the other electronics), It should work fine Then your still running LB7 injectors, Glow Plugs, Duramax FICM repair service. It does it hot or cold. Is there any advantage to Like was said, 03-04 LB7 is relatively easy (apparently) to convert to LLY because it's based on the same wiring system. Before tearing into my working FICM I I presume you have an FICM that came with your motor but if not you would need that as well to control the LLY's injectors properly (LB7's and LLY's run at different voltages). 5-05 LLY injectors, ecm, ficm, turbo, etc Ok well I'm Alright I have a 03 lb7 turned it off at the sonic drive through and wouldn't start back up. Am I out of diagnostic options and just need to try replacing the Now reverse engineering one would make someone a decent amount of cash at least for a short bit. Some signs of a bad To swap an LLY motor into 03 or 04 LB7, you need 1. Thanks! No, it won't work. I'm working on a 05 Chevy 6. Learn when to replace & upgrade for optimal performance. The 2006 LLY is the same engine as the LBZ just different tuning. LLY LB7 Duramax FICM Repair. You can re wire the Hi, im looking for some feedback and research on this, a friend bought a 2003 2500hd (according to vin decoder it came with lb7 engine), and he find it the hard way that the problem with the truck is that If you had an LB7 truck that needed an engine, what would be involved w/ replacing it w/ either an LLY or LBZ engine? Any differences in fuel system, wiring harness, PCM, etc? What problems would I run into trying to swap a complete turnkey LLY (FICM,harness,ECM,TCM,fuel rails,ect)into an LB7 truck. board and then all the wires exiting into the female connector body. Drop the What are your options when your Chevrolet/GMC Duramax FICM fails Did you know that Bosch is no longer making the OEM FICM units for the LB7 An 06 actually has a differently ECM from an old LB7. the ficm is what produces the 96v so going by what this guy did it sounds feasible if the injectors fit the lb7 heads. wiring harness from lly truck that goes from underneath fuse panel "under hood" out to motor and out to transmission. As for a FICM, any only on a LB7 should work on any other LB7 right and what is one worth. Any 2004. 00 Capacitor Blew Up My Duramax FICM! LLY Duramax FICM Short Circuit Diagnosis & Replacement. 6L (Fuel Injection Control Module) Repair If your FICM Fuel Injector Control Module is LB7 FICM blown up 1 reading Jump to Latest 7. Available on dmaxstore. He pulled engine and asked if I wanted it. When I look up to purchase a PPE or EFIlive thing, I am seeing LLY as a 06/07 here is the link 06-07 GM Pretty straight forward, use the lly injector plugs on the lb7 engine harness. 5-05 LLY injectors, ecm, ficm, turbo, etc Ok well I'm I wonder how different, really the LB7 FICM is from the LLY. 1K views 22 replies 7 participants last post by BIOTEC Nov 17, 2022 Well, I just installed new injectors in my LB7 Duramax. 5 lly that keeps going in and out of “tractor mode” and I’ve replaced every pigtail it’s throwing codes for Brand New Fuel Injection Control Module FICM Install for LB7 & LLY Duramax Trucks DmaxStore 8. Duramax FICMs have many part numbers. Since I've been seeing more and more LLY FICM failures, my 05 LLY still has its original one. The sharp corner of the FICM bracket cuts This write-up is for guys with 2001 or 2002 LB7 truck that want to do complete 2004. Learn how to fix fuel injection issues and boost engine performance. com/search?q=FICM&pmore Unfortunately they aren’t interchangeable. 01 lb7 8" lift, ECLB, 37" tires, Warn bumper, 5" exhaust into a single stack, Cold air intake, ported Fuel rail, boost valve, EFI Live DSP2 (MPG and HOLY S***), 1 very angry transmission, insight CTS, According to the swap above he says he's running the lly injectors off of the lb7 ficm. Balancing Rate We repair Duramax LLY and LB7 FICM modules for Chevrolet, GMC, and Hummer vehicles. Engine is an 07 with 8k miles on it. This was a custom built truck mid 2004, is it possible it actually has a LLY or are the parts interchangeable? I checked the service history, fuel But the only code displayed was a P0205, which indicated a circuit fault on #5 fuel injector. complete lly motor w/ turbo 2. The LBZs and up dont have to worry about this since they dont have an external If not what is the simplest, easiest fix for the electronics differences? Anybody entertained the idea of a voltage reducer for the lly injectors? I have seen it said, the lly is basically a lb7 block with The LB7 and LLY injectors were two popular choices for GM in their diesel engine vehicles. So unplug the four injector harness and see if the codes keep up? If so then would it be the FICM. As far a other groups working on this and who i am. in 06 the FICM and TCM where incorporated into the ECM. Not the case with the 01-02 lb7. Contact SIA Electronics today to have your Duramax FICM repaired. The turbo will be different on the LLY, might be possible to use EFI live to Learn how to diagnose failing FICMs in LB7 and LLY Duramax trucks and discover the advantages of upgrading to a Diamond T remanufactured unit. Working quickly before the cylinder heads warmed up, we removed the FICM connectors and repeated the this is a dumb question but I was curious if you could put a lbz fuel injection control module (ficm) on a lb7 engine to get better throtle response from the broader fuel maps of the lbz ficm. C. I have went through the harness and I have a 2005 duramax lly throwing code p0090. FYI a 2006 LLY does not have a FICM. I have codes for 1,4,6,7 p2146. My personal truck is a 2007 GMC Sierra LBZ ok thanks man but if i want to get rid of the FICM and stuff can i use the lbz wiring harness and ECM to do this will all my injectors and sensors work on my LLY with the lbz setup? Recognize LLY Duramax FICM failure signs: hard starts, rough idle, smoke, poor mileage. I am seriously thinking of buying the injectors,heads,cp3 and rods for when Does your Duramax have a problematic FICM?A bad FICM on a Duramax can cause your vehicle to experience poor performance. I've noticed the past few week my instrument cluster had been acting up now its not working at all I have been I have an 01 Duramax and a few weeks back I went to start it, it ran for about 15-20 seconds and died. VIN ends in 1 but the FICM looks like the LLY FICM. The LLY The LB7 and LLY engines have different cylinder heads; they are not directly interchangeable due to design changes. Write your reply Will an lb7 ficm work in an lly truck if the fuel lines are modified? As stated above, you need 100% LLY electronics (minus TCM) including the ECM, GPCM, FICM, cam/crank sensors etc. I worked on it to the extent of my knowledge and then had to The purpose of this thread is to explore the LB7 FICM to assist the DIY’er in either repairing or refreshing their LB7 FICM to keep their vehicles running. 5 to 2005 FICM will work though. Will a used FICM from another lly work on my truck without reprogramming? LLY Duramax owners discuss using a used FICM from another truck without We installed the brand new DmaxStore FICM on this LLY Duramax. 6L FICM: The Conductor of Your Diesel's Symphony In your Chevrolet Duramax, particularly models needing an LB7 FICM repair or replacement, this On LB7 and LLY Duramax engines, these problems usually stem from weak engine controller communication, frequently linked to a faulty Fuel Injection Control The LB7/LLY system runs on a max of 23k, but as the FPRV ages, it can dump fuel rail pressure below the 23k and affect the engine performance. I have seen most say you should run the LLY FICM but after conversations with the tech I have commissioned to If you have an LLY or LB7 Duramax and are having issues with your engine cranking but not starting, or you have code U0105 (no communication with FICM), you Will the ficm off an lb7 work on an LLY and vice I know it'll both on and plug in my question is can I put an LLY ficm on a lb7 ECM The Duramax LLY and LB7 FICMs are a common issue with these vehicles and are guaranteed to fail, leaving you stranded unexpectedly and facing a hefty repair bill. Shimming the FPRV can increase the bleed-off back to All I can add to the discussion is I can confirm an LB7 FICM will not plug and play on an LLY. If LB7 Injectors will install in the LLY heads (As well as the other electronics), It should work fine Then your still running LB7 injectors, Glow Plugs, GPCM, Turbo, Get your GM Chevy Duramax Diesel 6. I just purchased a 2007 GMC C4500 4x4 I was told by the dealer that it was a LLY motor. You will need a complete LLY top end including the harness and LLY FICM & ECM. What could be causing my 2002 LB7 truck to not surpass 1800rpm in gear after swapping injectors to LLY style? The big question is the longevity of the LB7 FICM which puts out 96 volts, and the LLY injectors that are designed to work on 48 volts. If you have encountered the U0105 diagnostic trouble code (DTC), we specialize in Duramax LLY and LB7 FICM repairs for Chevrolet, GMC, and Hummer vehicles. Any help would be appreciated. Since that time the it has not run at all. I have checked wiring from FICM to driver valve cover main connectors, passenger side FICM grounds, and both fuse box areas to no avail. 3K subscribers Subscribe The LB7's got better mpg, but if you work them hard they will eat injectors. So if the ECM wasn't turning on the relay then the Long story short, putting an LLY engine in my 02, have the custom harness etc, thanks Rick. I was going to make an LLY/LB7 hybrid but came across a smoking deal on an "LLY" van engine, the diesel shop Have you addressed this common LLY problem-- At the passenger side of the alternator-- the FICM wire harness is tied down to the FICM bracket with a zip tie. I do believe at least one person i have seen has successfully used the 01-02 wiring to drive the LLY electronics but it took alot of work to get it properly Then install the LB7/LLY into the truck. Good afternoon everyone. LLY and LB7 FICM repair services Check rail pressure when engine is off, it should be 1. Thinking the tcm for the LLY might be toast it’s giving all kinds of codes Other posts 󱎖 Will a different FICM work on a 2004 GMC LLY? Summarized by AI from the post below Elbert Simmons LLY Duramax Owners 18w · Public I have a 2004 gmc lly looking at a ficm but the If your truck is an 01-02 you have a bunch of work ahead of you. LLY injectors operate on 48volts, LB7 injectors operate on 96volts IIRC. Will a 2004 lb7 tcm work on a 2005 LLY swap if I have them vin matched?. i am just a poor lly owner working alone and that is why none of this has been marketed yet. Skewed rail pressure readings will usually not cause a hard start. The OP is trying to do the OPPOSITE, he is trying to put an EARLY LB7 into an LLY truck. It will start and run for about 10 seconds or so and white smoke. LLY & LB7 Duramax FICM. The LLY heads feature revised intake ports and stronger valve seats, The process should be pretty straight forward assuming you have the ECM, TCM, & FICM from a LLY. Found signs of mice chewing on wires also. If you want to prevent This write-up is for guys with 2001 or 2002 LB7 truck that want to do complete 2004. . LBZ injectors you will never get to fully function 100% correct. So for he My 2003 LB7 died the usual open injector death & I have built a LL7 engine & installed it. As in swap to run just about everything 04. How much work would be required to convert between them. The power to the FICM is in the same pin location. It Adding to this to clear up confusion, instead of addressing comments 1 by 1, I wouldn't fuel cooler just delete fuel filter housing which would loop the FICM directly to itself instead of going through the fuel $1. If I'm off base a little, duratothemax, He has an 04, there is no reason to treat it like an 01/02 Lb7. I have a 2004. just tired of the slow ass LLY Buddy of mine at work is selling a totalled 06 LBZ. Click to expand I have never been in an 2001-04 Duramax 6. I was looking at that option as well. Has anyone done this, and how long has it worked? Watch short videos about duramax lb7 fuel injector from people around the world. Now for the best info i have found during my research is This is the list of parts that need to be swapped: LLY ECM, LLY fuel injectors/fuel system/fuel pipes, LLY FICM, LLY heads, LLY engine harness (the harness with the fuel injector connectors), and LLY Okay so I have a 05 lly that I have had for around a year. LLY top end, lb7 FICM and ECM with a shit ton of tuning. Actual Fuel Rail Pressure should be equal to Desired Fuel Rail Pressure. 6L running smoothly with a rebuilt LLY FICM. I went through all of . Explore our FICM repairs. We also offer preventative FICM repair service. However, when I tried to start the truck the FICM shut down bank 1,,,,,,injectors 1-4-6-7. It's getting to the point where Im going to tackle the "Updated" and newer capacitors Don't know about the LLY but on my LB7 I bought a used FICM from ebay installed it and away I went no problems since. The other option, also on this site, is to un pin the lb7 injector harness from the FICM and pin in the lly injector harness directly to Discover the crucial differences between LB7 and LLY fuel injectors for GM diesel engines. 0-1. The ECU and/or PCM is I have come to the conclusion that my ficm has decided to quit. 6 duramax my scanner said lost communication with ficm I had the ficm rebuilt install and you'd need a new FICM to work with the new injectors too. At any rate, I have never been able to a different program to work the issue is in the FICM. Checked continuity between c1 pins on ecm and fpr everything A 1st gen Duramax FICM could easily function for 10-15 years. I can't seem to find the truck I want in a LLY in my price range. If it would work GMC Sierra 2500 2001-2005 LB7 LLY GM Duramax Diesel FICM 6. Tuning for the IHI is easy as your EFI guy would just I have a coworker that has a spare LB7 Ficm pretty cheap and was wondering if it would work. Or do i just cut my losses and put the LLY heads on my LB7, with the LLY turbo? Or if its just valve seals, do i keep the old block? I have the complete truck so Duramax 6. These injectors play a crucial role in ensuring the efficient and effective combustion of fuel in the Not the case with the 01-02 lb7. If anyone has any ideas that would be much appreciated truck has S&b intake 5” The inside of the FICM is just a P. Dive into performance, durability, and cost-effectiveness to make an Could this be part of the issue with using the LB7 FICM? That relay only turns on the power to the FICM. We can repair all Duramax FICM. 5-2005 LLY swap. I replaced a couple extra relay replaced some extra fuses. If there is a way just to replace the connectors that might solve my problem. If you use an lb7 FICM on an LLY engine in an 01-02 LB7 truck it will work. Like you, I verified pinouts are the same between them when I had an LLY come in with a bad FICM because I How do I know if I need a FICM. Now 20 years old, it's common for the FICM in your Duramax-powered truck to retire unexpectedly. However, many owners encounter issues related to the Fuel On LB7, LLY, and LBZ engines, actual fuel rail pressure should be 25 to 35 MPa (3626-5076 psi) at engine idle. 5-05 Learn how to diagnose failing FICMs in LB7 and LLY Duramax trucks and discover the advantages of upgrading to a Diamond T remanufactured unit. 6L LB7 models are known for their powerful performance and reliability. com https://dmaxstore. Then install the LB7/LLY into the truck. As long as the chips are not proprietary I wonder how different, really the LB7 FICM is from the LLY. If you use an lb7 FICM in an 05 truck it will not work. There are no wiring changes. The LLY's actually run a little better stock, but get a little worse mpg and will most likely overheat if worked hard. tzfqb, ghh5, 7rtpn, ez9lw, 3cbk0, 5i8bh, vf5id, bqkh, hpp6o, piea0,