Question about 2004 Chevrolet Silverado 2500HD

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Check engine light with Fuel Pressure Reg.code on 2004 Duramax

While I had no performance problems, I went to dealer about engine light and they replaced the Fuel Pressure Regulator for $1200. The light came back on the next day and the dealer worked on it for hours, saying that ''Support Services'' said it Might be the wiring harness for $300! I said NO Thanks, and now I drive it as normal, turning off the check engine light with my new code checker ($199). I am considering buying a FORD!

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  • John Ballou
    John Ballou Aug 02, 2009

    Don't know exact code! Will get it next time! Thanks!

  • John Ballou
    John Ballou Aug 03, 2009

    I am solving this problem by ignoring it and periodically checking the code when light comes on! I may again change the fuel filter soon to assure that is not partially clogged, but there are no performance issues at the moment. The dealers are reaping what they have sown in the market!

  • John Ballou
    John Ballou Aug 04, 2009

    Since I was assured by the dealership mechs that they did not know if the $300 wiring harness replacement would help, and they also said that it would Not create further damage to drive it with the "check engine" light on, I decided to just tolerate the periodic light, as so many friends with other types of cars do, and drive it! I may monitor and change the fuel filter more now, esp. since I found a cheaper source of Diesel Fuel filters at:
    www.dmaxstore.com/

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  • Master
  • 1,392 Answers

They have the same problems. What code are you getting? I may be able to point you in a better direction.

Posted on Aug 02, 2009

  • Eldric Venne
    Eldric Venne Aug 02, 2009

    Didn't realize it was a diesel. They started (meaning everyone) having problems with all the diesels once they started putting emissions **** on them. You may just need to repair the part of the wiring harness that is bad. All the newer diesels have issues though.

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