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Anonymous Posted on Feb 14, 2015

Why would check engine light come on and go off on 2003 duramax 6.6 diesel

Fuel additive

2 Answers

Bill Boyd

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  • Chevrolet Master 53,816 Answers
  • Posted on Feb 14, 2015
Bill Boyd
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It is a warning that something drastic has happened in either the engine or transmission.
check all fluid levels including the coolant at the radiator cap. check for overheating
Have the fault codes read before driving it anywhere.

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  • Contributor 56 Answers
  • Posted on Feb 14, 2015
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If the check engine light flashes it could be something vary important you might want to check that before driving it.

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5 Related Answers

badealer888

Stan Cather

  • 414 Answers
  • Posted on Jun 23, 2009

SOURCE: Chevrolet duramax diesel engine problem

To rebuild without pulling the engine you will have to remove most of the front body ( grille , radiator, intercooler, etc.)

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Anonymous

  • 17 Answers
  • Posted on May 11, 2010

SOURCE: 2003 Duramax Diesel loosing prime and will not

duramax diesel trucks do not have a lift pump. start with the simple things make sure your fuel filter is tight and check the shreader vlave on the fuel rail if that don't help check the filter housing for a leaks arround the heater element or a crack in the housing itself

Anonymous

  • 2 Answers
  • Posted on Dec 31, 2010

SOURCE: 2001 Duramax 6.6 Turbo wont start

does the starer click when u turn the key,u could have a bad ground from the batt to the body

Anonymous

  • 1 Answer
  • Posted on Mar 07, 2011

SOURCE: i have a 2003 chevy

i own three gmc trucks years 2004 2003 and all three trucks have dash problems get ready to spend 400.00-800.00 on the problem or take to a mechanic and have him wipe all codes clean will solve problem for a short while

Anonymous

  • 1102 Answers
  • Posted on Aug 05, 2011

SOURCE: 2001 duramax diesel engine light came on reads

Lots of good reading here:
http://www.gm-diesel.com/vbull/duramax-diesels/22659-diagnostic-code-p0093-need-help.html

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Long cranking before starting 2003 Duramax 6.6 diesel. Tested Glow Plugs, replaced two, others were good. Feplaced fuel filter and o rings. Still have problem.

this indicates several problems
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next is to have the injectors serviced and set properly
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2003 Duramax Diesel loosing prime and will not start until I lift the hood and pump the prime plunger on the fuel filter housing.

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