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crank no start

  1. 911 Problems Forum
    Hey everyone new to the forum, Recently purchased 2nd duramax (04 LB7 with 146k, Cali truck) after owning a lbz previously. Having issues starting. Truck sat for about 4 years in my brothers truck yard but ran great beforehand. Fired right up first day we pulled it out but now seems to have a...
  2. 01-04.5 LB7 Duramax Powertrain
    I've got an 04' silverado with a vin 1 lb7 and once every couple months it will crank but not fire no matter how long you crank. I replaced the primer pump, fuel lines and fuel filter. It changed nothing. I can prime it up tight with no air and as soon as I crank it I lose the prime. I can prime...
  3. 04.5-05 LLY Duramax Powertrain
    Hi guys, I started my truck , a 2005 2500HD Duramax LLY to warm it up after a few days. It started right up with no hesitation. I went to get in after a few minutes and it died. I cranked but it wouldn't start. and it's been 5 days now. Here's the list of things I checked and I know: 1...
  4. 06-07 LBZ & LLY Duramax Powertrain
    Current issue is my 03 Sierra sounds like its cranking strong but will never fire up. I had both batteries tested at the local parts stores and they tested good. I figured since the batteries tested good and wouldn't hold a charge it may be the alternator. It looked easy enough to get off so I...
  5. 01-04.5 LB7 Duramax Powertrain
    Let me start with saying I don't know much about diesel engines or trucks to begin with so thanks for the help ( I definitely cannot afford one of the many high dollar shops in my area since both the wifey and I are laid off due to the Coronavirus bullshit going around)! My 03 gmc 2500 duramax...
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