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  1. DAVe3283

    Coolant loss into oil and no external leak! Help

    If the oil cooler is leaking, I would expect to see mixing both directions. When the engine is running, oil pressure is 15-60 PSI and coolant is 15 PSI, so you would get oil in the coolant. But when the truck is shut off, oil goes to 0 PSI but coolant stays at 15 PSI for a while, and will put...
  2. DAVe3283

    High EGTs w/ KB Diesel 64mm

    Which PID are you using to read boost? The LB7 will cap the reported boost on the SAE PID if I recall correctly. There is a PID that can read higher, but the stock boost sensor only reads up to like 30 PSIg so with an aftermarket turbo you really want to swap that to a 3-bar or higher then...
  3. DAVe3283

    Bought a Sierra as Donortruck - now he stay

    Just little things, like your comment on the sheetmetal for the repair part being so thick compared to normal. Though that might be a truck vs. car thing more than US vs. Germany thing. The rest of the differences make sense, as the parts are hard to get over there so it makes sense to...
  4. DAVe3283

    Bought a Sierra as Donortruck - now he stay

    I really enjoy reading about the restoration and seeing the little differences over there vs over here. Looks like you are making good progress and doing a very thorough job. Thanks for keeping us updated! Sent from my CPH2655 using Tapatalk
  5. DAVe3283

    Bought a Sierra as Donortruck - now he stay

    Here's the pin out for the inside rearview mirror. See if those pins/colors match. I don't see a connector like you have for the roof marker lights, but I might be looking in the wrong section of the manual. Sent from my CPH2655 using Tapatalk
  6. DAVe3283

    Bought a Sierra as Donortruck - now he stay

    That wire on the headliner is probably for the rearview mirror. The higher trim levels have the temperature and a compass in the rearview mirror. If all the wires are present, you might be able to upgrade yours by getting the rearview mirror and adding the temperature sensor at the front of the...
  7. DAVe3283

    Forum Server Move

    Not sure if it is related to the server move or not, but the ET Calculator doesn't work for me anymore. Just loads a blank white box: I've found this one to be more accurate than the random ones elsewhere, so hoping it's not permanently broken.
  8. DAVe3283

    LB7 LML Allison 1000 conversion & swap

    PCMPerformance is where I bought my 6 speed file. Sent from my CPH2655 using Tapatalk
  9. DAVe3283

    Injectors help.

    I've got a set of brand new SAC 45% injectors I'd let go for a fair price. Bought them from Brad but ended up going bigger, never even took them out of the bags. Sent from my CPH2655 using Tapatalk
  10. DAVe3283

    Bought, wrecked, rebuilding a 2009 LMM

    That's the most AI response I've seen from a company all day. Sigh. Sent from my CPH2655 using Tapatalk
  11. DAVe3283

    Bought, wrecked, rebuilding a 2009 LMM

    Now that's a cold engine bay! Kind of surprised how much snow accumulated under the hood. Sent from my CPH2655 using Tapatalk
  12. DAVe3283

    Transmission issue or wiring??

    The 5-speed Allison transmissions has a hydraulic failsafe where 3rd and reverse work fully mechanically when there is no electrical power, which is why your truck would drive once you unplugged the connector. If I were to guess, it would be the transmission connector filling up with fluid that...
  13. DAVe3283

    LB7 Possible sensor issues

    Key On Engine Off the MAF should be 0, or close to it. I think the value the OP saw is fine. Idling should be about 40 g/sec. Depending on the scan tool, some display MAP but call it boost. At sea level, MAP would be around 14.7 PSI. Sent from my CPH2655 using Tapatalk
  14. DAVe3283

    Bought, wrecked, rebuilding a 2009 LMM

    When I did my Duraburb in 2017 we couldn't find an easy spot for a fuel cooler, so I don't run one at all. Fuel temps are basically identical to my truck, even when the fuel light is on (fuel light takes 32 gallons to fill the 35 gallon tank). I don't tow heavy with the Suburban, but I do tow a...
  15. DAVe3283

    New PB

    Unfortunately I have been too busy to finish reverse engineering the GM OS that everyone converts to 6-speed so that I can freely give it away. However, I do have at least basically usable CAX files to edit 6-speed tunes, working with both DuramaxTuner and PCMPerformance files. PCMPerformance...
  16. DAVe3283

    New PB

    I toggled the visibility, hopefully the video is working again now. Sent from my CPH2655 using Tapatalk
  17. DAVe3283

    New PB

    Got back to the track for my birthday a while back, and with a better launch, got it down to a 12.162 @ 111.58 MPH. Still 8,200 lbs give or take, so I am really fighting physics at this point. It might be fun to take some of the weight out just to get that 11.999 pass one of these days when I...
  18. DAVe3283

    Alternator staying on. Running a single Alt using second Alt trigger wire?

    Yeah, it's weird. I suppose it could be a 2nd ECU with an issue that I bought. Hmm, I'll measure my blue truck and my brother's truck and see what they show for voltage on that wire to compare. Neither of them has a battery drain, so that should be telling. Sent from my CPH2655 using Tapatalk
  19. DAVe3283

    Alternator staying on. Running a single Alt using second Alt trigger wire?

    Perhaps relevant, but I've been trying to diagnose this on my LB7 as well, and I did end up swapping ECUs, but both ECUs behaved exactly the same. Thinking back, this also started when I swapped alternators after the OEM one died. Maybe the newer regulator modules they're building alternators...
  20. DAVe3283

    Seriously?

    The oiled/washable style filters make a ton of sense on gas rigs because they're throttled and only move the air they use. I actually get 50k miles or more between cleanings on my car. But diesels flow a ton of air, and I am lucky to get 10k miles before I have to wash the filter. If I could...
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