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  1. DAVe3283

    Steering Box for Quadrasteer Suburban

    I have a 2003 Suburban 2500 Quadrasteer (w/a LB7) and the steering box input shaft seal started leaking. The box still feels tight, just leaky. I believe the part number is 19330624, and it appears that box is unique to the Suburban 2500 platform (including Yukon XL 2500, H2, and Avalance)...
  2. DAVe3283

    Another '03 LB7

    Picked up a 2003 GMC Sierra 2500HD CCLB LB7 4x4 with a utility bed on it. I have always liked this style of utility bed where it matches the body lines instead of just being a big square box. It needs injectors BADLY, so I towed it back to the farm: The body is a bit rough, and it needs some...
  3. DAVe3283

    WTB LB7 ECU

    My truck's ECU died Sunday. Anyone have a 2003-ish LB7 ECU they would part with? Stock/unmodified is ideal, but it can be tuned so long as the tune isn't locked; I need to be able to flash over it.
  4. DAVe3283

    S&B 10-1023 LB7 calibration

    As with all my scripts, they are in metric, so set EFILive to metric first! I just installed a S&B 10-1023 "62 gallon" fuel tank. By my measurements, it is 56.2 gallons total, with about 54.7 gallons usable through the included fuel basket. Might be able to sneak a bit more out through the...
  5. DAVe3283

    Software upgrade growing pains & wins

    Overall, looks to be a good start on the migration, and I do think this will be a nice long-term improvement. I'm sure Jimmy & The Fish are aware of most of these, but I thought I'd put up a list of what I've noticed so far. Unicode / UTF-8 decode issues on old posts. Specifically, apostrophes...
  6. DAVe3283

    Attachment Quota

    I'm trying to attach a couple PDFs of schematics to help a member diagnose an issue (thread, post), but I seem to be 8.3MB over my quota somehow. I guess the quota was reduced at some point? The attachments are pretty small (<300 KB total), and would be useful information to keep around. I hate...
  7. DAVe3283

    LB7 injector HP line socket info

    How is everyone doing LB7 injector lines without a crows foot? Does everyone just guess on the torque, or use the old pull-on-a-wrench-with-a-spring-scale trick? I always use a crows foot to tighten them up, works really nice. Having the right tool can make all the difference, though. Looks...
  8. DAVe3283

    Raced the Pontiac Grand Prix

    Firebird had their midnight drags last night, and I wanted to shake it up a bit, so instead of my truck, I brought my 1998 Pontiac Grand Prix GTP daily driver. The car has a L32 in place of the stock L67 (because I seized the stock one) with the Gen V supercharger. It's got 60# injectors, a ZZP...
  9. DAVe3283

    Killed a CR-V at the strip

    I didn't get a chance to get to the drag strip yet this year, so made it a point to go to the last blast at Firebird today. Brought my 1998 Pontiac Grand Prix GTP daily beater to test if my new intake/downpipe helped (it did, gained 9 HP :roflmao:). My friend brought his bone stock 2017 Honda...
  10. DAVe3283

    HTTPS Side Effects

    First of all, I didn't even notice, but at some point you guys switched to HTTPS. So props to the admins for pulling that off 99% trouble free. That is often not as easy as it sounds. :thumb: I did notice one minor bug now that the site is HTTPS. In the iTrader plugin, when you are leaving...
  11. DAVe3283

    Winivan the Race Minivan

    I mentioned my "race van" in another thread, and people expressed some interest, so I thought I would write up a quick build log. But first, here is the completed project: If you just want to scroll through the photos and laugh, go right ahead, I don't mind. If you're curious, feel free to read...
  12. DAVe3283

    Retained Accessory Power (RAP)

    I wanted to get a high-amp Retained Accessory Power (RAP) source in the least ghetto method possible. I searched around online, and couldn't find a good guide, but I eventually figured out this method. This replicates how GM supplies RAP to the sunroof. If you have a sunroof already, you will...
  13. DAVe3283

    CV Boot Squeak

    My Suburban recently developed a squeak in the front end that matches vehicle speed. Jacked it up, and it was coming from the passenger CV boot. I put some silicon spray on the boot, but that made it much worse. Cleaned that off and sprayed it with WD-40, and it was silent! For 2 days. The boot...
  14. DAVe3283

    LB7 Quadrasteer Suburban

    Well, I'm officially a member of the Duramax Suburban club! My brother and I put this together last Christmas, and I ended up buying it from him over Thanksgiving. It is a 2003 Chevrolet Suburban K2500 LT Quadrasteer, fairly loaded. Heated seats, power adjust pedals, etc. It was an Oregon...
  15. DAVe3283

    2001 4.8L dual-tank OS

    My friend and I swapped a 2001 4.8L into his old 1984 Ford pickup, which has dual tanks. I would like to get the GM ECU controlling them, but I can't seem to find a 2001 OS that supports dual tanks. His current OS is 12208322, so if someone has that with dual tanks, I can segment swap, but I...
  16. DAVe3283

    2003 Overdrive Lockout

    Not sure if this belongs here or under Repower/Transplant, so please move if I guessed wrong. My brother and I are finishing up a LB7 swap into his 2003 Suburban. The tow/haul button works, light comes on, transmission goes into tow/haul shift pattern. Holding it down for O/D Off does not work...
  17. DAVe3283

    Auto-resize pictures

    On the old server, this forum would automatically scale down pictures that were larger than the maximum allowed size. This was very handy from phones, which usually make it really hard to resize pictures. Can we get that feature back? Because what is happening now is 10% of the time, people...
  18. DAVe3283

    Imploded air filter

    I went camping (off-road, dusty) last weekend, and noticed that on the way back, the truck was smoking at WOT and EGTs were toasty on hills (1400°F). At the time, I attributed it to the altitude (7000') and a heavy right foot. But... no: That filter is 3 months old, has 2,300 miles on it...
  19. DAVe3283

    LB7: VATS problem / edge case

    So I have found a very specific edge case that causes my truck not to start. I am trying to determine if my RoadRunner ECU is the cause, and rather than swap the RR for the stock ECU, I figured I would rev up the 'ol keyboard and see if anyone wants to try an experiment for me! Requirements...
  20. DAVe3283

    LB7: SAC-style Injector Life

    This thread will be a long-term review of the SAC-style +75% injectors I put in my truck, and how they hold up. Backstory As described in my other thread, I had a set of +100% injectors take a giant crap 9,351 miles after Exergy had given them a clean bill of health. cKWdxVv66tI So, I...