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  1. Durmax 06 limp mode PLZ HELP

    Test Forum
    So I just got this 06 a few weeks ago and car fax says one owner I get it driving feels fine. And out of no where one day it doesn’t start at all no crank nothing. Say I need to do maintenance on the 4x4. Abs break light and check engine. Replaced a relay started up for a few seconds dies.. I...
  2. Can I put a factory brake control on?

    Towing & Hauling
    I am acquiring my dad's 07.5 GMC and would like to know if I the harness is there to install the factory brake control or if anyone has ever done this? Thanks in advance.
  3. Engine Brake Question

    07.5-10 LMM Duramax Powertrain
    I'm still a little new to this game although I've had my truck for over a year now. I saw on someone's sig that they have the Banks Exhaust Brake on their 2007.5 LMM. I've also read that using EFI Live the Turbo Brake can be enabled. How does all of this work? Is it a hardware thing or just...
  4. Hydro-boost parking brake problem

    911 Problems Forum
    Help, I'm really in a pickle. I have a 1990 Pace Arrow on a Chevy P-30 chassis. I can not get the parking brake to function. Replaced power steering pump, front calipers and flushed system with new fluid. I get pressure from the spool valve but no pressure to parking brake. Every mechanic I...