i have a 2003 gmc truck 6.6 diesil and it wont start when it is cold .

Asked by grayer Jan 29, 2014 at 08:29 PM about the 2003 Chevrolet Silverado 2500HD 2 Dr LS Standard Cab LB HD

Question type: Maintenance & Repair

i have changed the glow plugs,condutor rial,glow plug actuator,fuelfilter.what could be the problem.

1 Answer
51,305

John answered 10 years ago

The big boys that drive the 18 wheelers have what's called a fuel heater that circulates the gas through a radiator type heater to keep the fuel warm. Paraffin wax in in the diesel fuel and it will clog up the injectors. If you are in cold weather, find a way to keep the fuel in the tank warm. This may help. Have the injectors cleaned and the fuel line blown out to clear it. There is an additive you can add to the diesel fuel to help this. Also, if there is a leak in the injection system and air is getting in, it will cause a starting problem as fuel is not getting into the cylinders. You may be going to a truck repair place to trouble shoot this problem.

Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Chevrolet Silverado 2500HD Questions

CarGurus Experts

  • #1
    GuruXPQGJ
    Reputation
    1,430
  • #2
    Reelin68
    Reputation
    1,210
  • #3
    Steven Loeffler
    Reputation
    1,160
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500HD
21 Great Deals out of 1,519 listings starting at $5,500
Used Chevrolet Silverado 1500
195 Great Deals out of 5,877 listings starting at $2,975
Used Ford F-250 Super Duty
18 Great Deals out of 1,178 listings starting at $8,995
Used GMC Sierra 1500
128 Great Deals out of 6,516 listings starting at $3,975
Used Ford F-150
309 Great Deals out of 13,933 listings starting at $1,712
Used Dodge RAM 2500
17 listings starting at $7,900
Used Ford F-350 Super Duty
38 Great Deals out of 2,698 listings starting at $6,996
Used Toyota Tundra
31 Great Deals out of 1,361 listings starting at $6,255
Used Chevrolet Tahoe
14 Great Deals out of 896 listings starting at $12,900
Used Chevrolet Silverado 3500
1 listing

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.