Engine dies for no reason, idling or driving. Starts and knocks,other times starts and runs fine. 04 Silverado/Duramax 3500

Asked by scottlyons Jan 22, 2015 at 10:45 PM about the 2004 Chevrolet Silverado 3500 LT Crew Cab LB DRW RWD

Question type: Maintenance & Repair

This is a total head scratcher!  Sometimes it runs just fine for miles but out of the blue
it will just die.  When I try to restart it knocks really bad and I shut it right down.  After
10 minutes it MIGHT restart normally or it may not.  Next day it might start normally or
again...may not but eventually it does for no reason at all.  Certified Mechanic is
baffled.  Checked everything he could.  All seems fine.  Codes reset, parts checked
out and all seems fine.  He finally gave up.  
Truck may run normally for hundreds of miles until it does it again and other times will
only go a mile or two.  Nothing explainable triggers it.  Not heat, not potholes, nothing.  
It also blows me away that sometimes it starts back up normally and sometimes not.  
there is no rhyme or reason to it.  
Completely afraid to drive it now because the problem is so random that I never know
when its going to leave me on the side of the highway or worse yet, dying right in the
street in traffic.
PLEASE HELP with any advice or solution you may have!
Thanks in Advance!!

1 Answer

155

this is what happened to me, maybe this will help. I wash the motor about every 15-20k to keep it clean and dirt free. found that i had a bad seal at the computer and it had water in it. took the comp out and cleaned terminals, reinstalled and im back up and running. it took 300 plus miles for the problem to happen but never the less it did. i ran all the normal diags. and was beating my head against a wall just you r. hope this might help ya a little. good luck.

3 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    casper271
    Reputation
    160
  • #2
    GuruZBY57
    Reputation
    90
  • #2
    Rowefast
    Reputation
    90
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 2500HD
33 Great Deals out of 1,560 listings starting at $5,990
Used Chevrolet Silverado 1500
169 Great Deals out of 7,303 listings starting at $6,495
Used Dodge RAM 3500
29 listings starting at $13,997
Used Ford F-350 Super Duty
52 Great Deals out of 1,577 listings starting at $5,000
Used GMC Sierra 2500HD
26 Great Deals out of 2,170 listings starting at $5,500
Used Dodge RAM 2500
3 Great Deals out of 31 listings starting at $7,900
Used GMC Sierra 1500
155 Great Deals out of 8,158 listings starting at $5,500
Used Ford F-250 Super Duty
24 Great Deals out of 856 listings starting at $9,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.