I thought it was fuel gelling so I changed the fuel filter and it did the same thing so put it the shop and cranked heat on it while plugged in after a few hrs it fired right up so I added diesel 911 and filled the tank, ran it for about a hour and the next day the same thing. so I blasted heat again and fired right up. Hoping someone can give me any info....thanks!!

 

im in fl and at 35 deg the other morning my 06 LBZ seemed like it wasnt going to start the next day was 40 deg and same thing happened next day back to warm no problem
Sorry I dont have any info but hopefully someone will. I believe that if gets really cold It will not start.

 

hey tons, if your still looking for a answer maybe try Diesel Place: Chevrolet and GMC Diesel Truck Forums
Ive had good luck on there getting help