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  1. 01-04.5 LB7 Duramax Powertrain
    I have a 2003 duramax with the Allison 1000 and I’m wondering if anyone has any insight to a new issue that came about. Driving down the road the truck is in 5th gear, TCL. Drives and shifts great. However, going down a small decline in a hill it seemed as if 5th gear slipped (truck revved up)...
  2. 911 Problems Forum
    So I have a 2018 6.6 Duramax 2500… 4wd Crew cab 156,000 LTZ the other day I stopped to get diesel and when I came back to the truck, I got hit with some crazy stuff. So the whole truck was shaking and idling extremely rough and my screen said “service emissions system and also had a check...
  3. Gauges, Electronics and Wiring.
    Okay, so i went to move my truck around the driveway tonight, and i noticed the background on my edge had changed. (insight cts2) so i clicked on it messed with it a little and got to the diagnostic sections and checked to see if it had any codes. well it does. here’s the codes: P0532 (something...
  4. 06-07 LBZ & LLY Duramax Powertrain
    Okay, so i went to move my truck around the driveway tonight, and i noticed the background on my edge had changed. (insight cts2) so i clicked on it messed with it a little and got to the diagnostic sections and checked to see if it had any codes. well it does. here’s the codes: P0532 (something...
  5. General Discussions
    I have a 2006 lbz duramax that is throwing p0540, p0405, p0671, p0672, p0674, p0675, p0676, p0678 codes. Anyone have any idea on what causes this and how to fix it?
  6. 2017-19 GM T-K2 Platform Powertrain
    So I have 3 glow plug related permanent codes and no warning indication on the dash. Does anyone have any idea why? Truck is acting totally normal, is there any chance the previous owner changed some of the glow plugs and never did a glow plug relearn and therefor I have un-clearable permanent...
  7. 911 Problems Forum
    Posting for my father trying to get an idea if anyone else has experienced this. We have a 2002 chevy duramax and lately it has been going into limp mode when tow/haul is on and then when we plug into the computer it throws random codes, and there not always the same codes. We think it might be...
  8. 911 Problems Forum
    Just did headgaskets and studs on an lly. Will crank for a couple seconds and quit. Has a buzzing sound when you turn the key on and when it stops cranking. Reduced engine power on the dash and a couple codes (P0193, P0335, P0662, P2122). Also shows 0% fuel on the dash and on my edge as-well...
  9. Gauges, Electronics and Wiring.
    Hey everyone new and fresh to this forum and to diesels in general. Apologies if this is in the wrong category. I have a 2013 Chevy Express 3500 Ext. 6.6L LGH Duramax of course with all that lovely DEF system joys. Had a crap load of codes that came shortly after i bought it recently and was...
  10. DIY and Tech discussion
    I checked my truck this morning with the scanner and saw it had a U1067 code which is for lost communications with body multiple control system. But so far everything I can tell is fine. Any ideas on what it could be
  11. Diesels
    So I cranked my truck up and hooked up my scanner like I do every week to check everything and there were 3 new codes being P0101,P0299, and P1404. My truck does have a egr delete it has thrown the P0101 code before but never P0299 and P1404. Turbo has a new sensor on it. Noticed the other day...
  12. 911 Problems Forum
    Hey there, I have a 2013 Chevy duramax and I was driving on the highway and all of a sudden it sounded like there was something loose in the engine bay and before I could get pulled off to the side it started to shake, sound like it was misfiring, and rev up and down on its own while not letting...
  13. 911 Problems Forum
    I’m hoping to find a good Duramax mechanic whose near Northern VA, Montgomery County, MD or Washington DC. Any insight or recommendations would be hugely appreciated. Thanks
  14. 06-07 LBZ & LLY Performance Parts Discussion
    I keep getting codes p0622, p0402, p0403 can anyone help with this?
  15. 04.5-05 LLY Duramax Powertrain
    My 2500hd doesn't get daily usage and the mice got up to the under hood fuse panel and seemed to corrode up the fuse sockets, tried blowing out the nuts with air, removing fuses one at a time and spraying with wd-40 , I have a ton of codes showing and Im sure I have a corrosion/bad connection...
  16. Transmission Shop
    Need some assistance here from the Allison experts here. I'll start with what the truck is doing/codes thrown and provide some back-story on things I’ve changed before this started to happen. Truck - '02 Silverado 3500, 4x4. Everything is stock. I do have aftermarket MBRP exhaust, Banks...
  17. 01-04.5 LB7 Duramax Powertrain
    I got a cel acouple of days ago with this code P2227. Does anybody know if I can live with this problem or if it is something I should fix right away? Any help would be greatly appreciated.
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