Chevy and GMC Duramax Diesel Forum banner


  1. New Member and New Duramax Owner

    Hello everyone, new to the forum here and I am new to owning a Duramax! I recently inherited a 2003 chevy Silverado 2500hd Duramax lb7, my grandfather bought it brand new in 2003-04 and he pasted away 2 years ago today actually. I inherited the truck a year after his passing and I am wanting to...
  2. cluster problems

    Gauges, Electronics and Wiring.
    Soooo... where to begin My cluster for the last year or so has been to where you had to tap it for it to come on in my 03. Lately it had been getting much worse so I decided to see whats up. I took it apart, marking the guage locations and so forth. I found heat marks on the board, and solder...
  3. 2003 silverado 2500HD Vaccum problem

    06-07 LBZ & LLY Duramax Powertrain
    I just got this 2003 4x4 extended cab chevy silverado with the 6.6 ltr diesel, and I noticed that I dont have any vaccum. On the driver side under hood by firewall there is what looks to be a electric vaccum pump but it is not plugged in and I cant find the plug. This was a Border patrol truck...
  4. Balance rates - motor temp different readings?

    01-04.5 LB7 Duramax Powertrain
    Wondering something... Got my even # injectors done 8 months ago, after road test my #7 came back @ -5.8 , assuming engine was at or close to operating temp saved my money and took it back to get odd # side done, asked them to test before fixing and here's what we got 1) -2.3 2) 3.3 3) -3.7...