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  1. Gauges, Electronics and Wiring.
    Putting together a "Frame off build" for a customer. The Truck was torn apart by different shops but in boxes to never be assembled again. I Inherited this project as a bare frame with axles and many boxes with parts. Since then I have assembled a lot of the truck and have the cab and all the...
  2. 07.5-10 LMM Duramax Powertrain
    2009 Chevrolet Silverado 3500 LTZ DRW 6.6L Duramax I'm having issues... My ECM burnt up (I think there was something rattling around in the back of it that touched something it wasn't supposed to.) I ordered a new one from Flashmasters pre-programmed to my VIN but of-course the theft deterrent...
  3. Gauges, Electronics and Wiring.
    I have no power on pins at Fuel Pressure Sensor!? And a really erratic voltage at Fuel Pressure Regulator that pulses between 3 & 6 volts. If I unplug the FPR it starts and idles perfect, plugged in Crank/No Start????? Got a P0193 code….. I’m wondering, if the ECM lost signal from fuel pressure...
  4. General Discussions
    2007 GMC Sierra 2500 HD Classic, bone stock LBZ motor with 225,000 miles. Truck ran great until it had a front end collision 8 months ago. When the truck came back it started to have issues. We are now experiencing limp mode, reduced power mode and it is throwing a code P0106 for 5V Reference 3...
  5. Gauges, Electronics and Wiring.
    Help! 2006 2500HD Allison LBZ. won't start, P0340 camshaft position sensor wiring 5 VOLT Reference to low reference is: 5 volts Camshaft signal to ground is: 0 volts, also pulled pin #56 at ECM also 0 volts here as well... Bad ECM? Is there anything that would cause 0 volts here? Thanks!
  6. 11-16 LML Performance Parts Discussion
    Hey guys, I need diag help. It's a 14 LML with 180k mi, full weight reduction, cp3 swap, over injectors, HSP high flow kit and tuned. I cleaned and oiled the air filter the other day and my problems began. It was trying to die at idle, the MGPs dropped by 1/3, there was a noticable power loss...
  7. Gauges, Electronics and Wiring.
    2019 LTZ 2500 101xxx miles, not stock. I feel as if I’ve done everything I know to do other then completely strip every inch of wire loom and inspect every wire in this truck. backstory. I’ve been running this truck for the last 11,000 miles with custom tuning with zero problems until 3 months...
  8. General Discussions
    Warm weather usually climbing a hill engine temperature gets to around 210 and engine stalls. Usually predictable to happen within 10 or 15 minutes of the fan clutch kicking in. No stop codes. After which the engine will stall almost regularly regardless of temperature. Disconnecting and...
  9. Gauges, Electronics and Wiring.
    06 LLY 280k mikes has a 5 selector switch tuner. Bought the truck 1.5-2 years ago and now the oil life reset is always zero. You can reset it (get the prompt oil life reset) all you want. Soon as you start the truck again the message is back. I don’t know anything about the tunes as who they are...
  10. 911 Problems Forum
    06 GMC Sierra 2500hd 4WD LBZ stock, lift pump, 147k miles. Long post but please bare with me. So there is a strange thing that happens with my truck ever since I got back from a boat trip. The truck had been sitting for about 3 months in my garage and since I’ve started to drive it again, at...
  11. For Sale L5P ECM

    Parts For Sale
    Factory New ECM, E41 from GM Ecm has no programming on this one. it will need to be programmed for your L5P or sent off to be unlocked. Call or text 850-819-8315
    $1,000 USD
  12. 06-07 LBZ & LLY Performance Parts Discussion
    Hey guys. I could really use some help here, I blew the ECM in my 06 LBZ. After 6 weeks I finally received a new ECM from Flagship 1. I understood it would be an easy plug and play and I just needed to relearn the key. Well, as luck would have it, it wasn’t that simple. I put the key in, turn...
  13. 06-07 LBZ & LLY Duramax Powertrain
    Hey guys. I could really use some help here, I blew the ECM in my 06 LBZ. After 6 weeks I finally received a new ECM from Flagship 1. I understood it would be an easy plug and play and I just needed to relearn the key. Well, as luck would have it, it wasn’t that simple. I put the key in, turn...
  14. 911 Problems Forum
    I have a 2015.5 LML. I recently installed a Dans Deisel 66mm drop in turbo and was trying to do the crank with no start method to send oil up to the turbo before starting the truck. (From what I understood you take out the crnk/run relay and stick both ends of a wire to crank the truck without...
  15. 17-19 GM TK2 Platform Performance Parts Discussion
    I just cant believe that with all of the experiences and knowledge on this site, that I cannot get a straight answer to this problem. I am certain someone here has figured out how to correct this issue. Any help would be greatly appreciated. I have a 2018 Denali Duramax and without thinking...
  16. General Discussions
    Let me first start out by saying thanks for all of you that take the time out and help total strangers. I bought this Truck last year and didn't have any real problems, aside from ones that could've been avoided until Probably 4 months ago. I've had three Mechanics look at it with the third and...
  17. Gauges, Electronics and Wiring.
    Bare with me it’s a bit lengthy. Have a 2010 LMM that’s been giving me TCM and ECM communication codes. Traction control and ABS lights come on and at higher speeds it will hesitate to shift. Took it to a shop the first time and they found a blown fuse (unrelated) and a bad wheel speed sensor...
  18. 01-04.5 LB7 Duramax Powertrain
    I’m looking at buying a 2002 Chevy 2500 6.6 duramax. That i drove ran excellent then when I went get it wouldn’t start. The guy told me he had have ecm reflashed three times. When he get it reflashed runs perfect for 3 to 6 month then does it again. Any idea what could be cause this. I really...
    ecm
  19. 06-07 LBZ & LLY Duramax Powertrain
    A little back history: Been in the negative temps for a couple days now and I add power service every fill-up once it gets to 30° at night. Haven’t had any issues this winter yet. This morning on my way into work my truck (07 classic LBZ) threw a CEL and started to bog down a little like it was...
  20. EFI Live
    Hello all! I have EFI Live custom tuning and a Autocal. Can anyone tell me if the Autocal logs both the ECM & TCM simultaneously? Thanks!
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