Diesel Place banner

lb7 no start

  1. Duramax First Generation: 2001-2004 (LB7)
    First post here. I've had my 03 LB7 for the last 3 years with little to no problems. It's sitting at 267xxx miles now, so its had the injectors done a few times, most recently a year ago. About 3 months ago it randomly wouldn't start. No crank, no start. All electrical was functional when in...
  2. Duramax First Generation: 2001-2004 (LB7)
    I’m hoping somebody can help me here as I am a bit stuck, I’ve only ever owned cummins and this is my first duramax and I am stumped. I have an 01 with 220,xxx. I put new injectors in and they have around 20k on them. A couple months back I drove the truck to work, shut it off, and it wouldn’t...
  3. Duramax First Generation: 2001-2004 (LB7)
    Lb7 2004 no start no crank after driving it if it sits for a hour it’ll fire up no problem battery’s are good when it enters the state of no start I can jump the starter or the relay and turn it over but will not start until sitting for a hour and whenever I get it started I can turn the truck...
  4. Duramax First Generation: 2001-2004 (LB7)
    I got a 2003 lb7 duramax with 320000 on it, I’m having a weird problem with it. When it sits say a day or two it fires up without a problem but when I shut it off after even 20 seconds of it running it will only crank and not start. When it sits the desired fuel rail pressure and actual fuel...
Top