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lmm

  1. General Discussion
    Hey so I sold the lbz and got a 08 lmm mods that I can tell are lift pump,def delete 4” exhaust, and a dmax store Idaho rob autocal trucks 6” rcd lift on 35s getting 15mpg or 380 miles to a tank cruising I’m not sure the time is flashed because I bought it this way has a dsp5 and the autocal...
  2. 07.5-10 LMM Performance Parts Discussion
    2008 LMM 3500 6.6. Recently did Full EGR delete with new pipes from manifold back and EFI Live AC V3 w/DSP5 Switch. Everything runs great, however, all of my gauge monitoring (boost, egt, trans temp, coolant temp... etc) is done through the OBD2 port and displayed onto the lcd screen of my...
  3. 911 Problems Forum
    I done a egr delete recently and noticed my truck throwing a p0090 dtc. After checking my wiring harness i seen that i broke the plug in on my fpr after replacing the fpr the code went away for a couple of hours but then i got codes p0088 and p0090. Could the new fpr be fault or could it be...
  4. Turbo's Stock and Aftermarket.
    Hey Guys, I'm looking to do a full stage II build from SoCal diesel on my 08 LMM. I'm planning to run 12mm s&s pump, 60% overs from s&s. I'm considering running the s400/Over stock compound kit from WCF but swapping out my stock charger for a 64mm. What is the best atmosphere turbo to run? I was...
  5. General Discussion
    I’m buying the HSP full max air flow kit, the person I bought it from had a sinister blocker plate delete and idk what tune is on it. It also had mbrp 4” exhaust. Needing help finding tunes and programmer to switch on the fly pls help!
  6. 911 Problems Forum
    I have a 2008 gmc 2500 just had a ppe stage 5 trans and convert put in a year ago. About 2 weeks ago I had a minor tick that would get louder with rpm and I was driving home from work and its now really bad. I have taken the transmission out to check the flex plate and still all in 1 piece...
  7. General Discussion
    I was given a 2007.5 GMC 2500hd 2WD. I had to replace the heads. As I’m putting it back together. I got stuck on this cable for the glow plug module. Where do I bolt in the other end? (This is my first time working on a Diesel)
  8. 2007.5 + (GMT 900) Non Powertrain New Body Style
    My suction hose is leaking and I'm trying to find a replacement. For clarification this is on a LMM crew cab SLE package. The hose that is leaking has the low side service port and pressure senor on the hose. None of the replacements I've looked at have either of those on the hose. Has anyone...
  9. 2007.5 + (GMT 900) Non Powertrain New Body Style
    Newbie here, I have a '09 2500 LMM. This past week I have lost all power steering to the right, but not to the left. Turning the steering wheel to the left can be done with a finger, but as soon as you turn to the right it's a wrestling match if you're under 5mph. Power Steering pump has been...
  10. Maintenance
    So I have a leak in my lower coolant, hose and while I’m still waiting for the replacement o ring to come in I need some help with the reinstall,alongside the original o ring was this plastic circle unfortunately when they fell out I didn’t get to see the order they go in so I don’t know if that...
  11. Introductions
    Living in Tennessee, I have an 08 LMM. Looking to do a downpipe back dpf delete. I would like to have two tunes on a dsp5 switch. Can I have someone do that for me or send an auto cal that I can use to flash the truck then send back? What do yall think is my best route?
  12. 07.5-10 LMM Performance Parts Discussion
    I recently bought a 09 duramax with a fass 165 pump on it. I changed the filters on it today and didnt prime them. I turned the truck on which lasted for about 20 seconds now it wont crank over and the Fass pump wont turn on. The fuse is good on it. Any suggestions?
  13. Gauges, Electronics and Wiring.
    I Have a 09 GMC LMM, I just bought a Edge CTS3 Monitor, I wanted to be able to display what gear I’m driving in but can’t figure it out. Can anyone help?
  14. 07.5-10 LMM Duramax Powertrain
    Hello all, i just bought an 09' sierra sle duramax, 2500hd, and just today i've noticed the engine sounding extra deep, and the exhaust's smell has become much stronger, and almost smells abnormal. Any ideas what it may be? Only things I've used besides diesel fuel was some ATF in one fill up...
  15. 07.5-10 LMM Duramax Powertrain
    This is my first time on this forum and I need some help. I was pulling a 20ft car trailer with a 36hp tractor up a 6% grade going 65mph and my Duramax said reduced engine power and change fuel filter with a p0087 low frp code. This code keeps popping up everytime I climb this grade. My frp was...
  16. 07.5-10 LMM Duramax Powertrain
    First timer here! Recently picked up an 07.5 Lmm with 295,000kms on her. Took the kids on a 5,000km trip towing a 4500lb trailer and ever since I’ve been getting a knock on startup and accelerating until it slips into 4th gear or so. I borrowed a laptop from our heavy duty dept at the college to...
  17. General Discussion
    Just recently got an 08 LMM that Is deleted and tuned and it’s my first diesel so I’m new to all this. Anytime I romp on the accelerator I get a change fuel filter message and occasionally a P0087 code (low fuel rail pressure) comes up. So far I’ve replaced the FPRV and replaced fuel...
  18. General Discussion
    So I got in my 2008 this morning to try the elevated idle that I had seen on YouTube. It was 38° and I couldn’t get it to turn on doing the pedal dance trick (that’s the only way I can do it because I don’t have the dash options) I tried it prior to this a few days ago just messing around and...
  19. 911 Problems Forum
    So today while driving my LMM after driving about 150 miles I pull into a parking lot and the truck just died and then I try to start it back up and started to crank with the key for a couple seconds and then after that the key did nothing The primer on the fuel bowl was soft and I pushed it a...
  20. Aftermarket Mods.
    So I am new to owning a diesel and doing anything to my truck and I want to EGR and DPF delete it. I have read some links and some things to by to do so but I am mostly worried I'll either get the wrong one or I will run into troubles along the way. I am looking for the simplest tuner and delete...
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