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  1. Exterior
    Hey yall So a couple months ago i put in some led switchback parking lights/turn signals and used some pre-made resistor wires that required no splicing so it was kind of a plug n play deal. Thing is, when i unlock/lock my truck, the parking lights dont flash anymore, only the side markers...
  2. 911 Problems Forum
    I installed a move bumper, set up one set of lights to high beams, works perfectly. The next set I to work with fog lights. All of a sudden the lights stayed on would not go off. Next thing I know nothing at all works, no dome lights, no display, nothing. After searching i Ended up blowing the...
  3. Towing & Hauling
    Need help been to gmupfitters but i cant find wat the wire colors are. This is all i have
  4. Gauges, Electronics and Wiring.
    Need help on the main harness that runs from the front to this junction ive been to gmupfitters a ton of good stuff but cant find quite what i need any help appreciated
  5. 06-07 LBZ & LLY Duramax Powertrain
    I have a a 2006 3500 long bed i bought without a bed the rear junction box has one plug in with one wire the rest are cut ive been to gmupfitters i need to know what runs to this junction first from the front
  6. Exterior
    Well, I got a 2015 LML. I went underneath and its got 12 rock lights (ApolloIntech), no switch or I even tried to search for a bluetooth ..didnt find any. I also see tons of wires andopen wires. How do I find out what goes where etc...its driving me nuts!!
  7. Gauges, Electronics and Wiring.
    Hey! Need some help as usual my duramax is having some strange electrical issues. I'll be driving under normal conditions not touching or changing anything when my radio shuts off, then my tuner, and then I will loose all my gauges except my speedometer and RPM. The security light, battery...
  8. Gauges, Electronics and Wiring.
    Howdy guys and gals, This is just some insight on a problem I was trouble shooting for a couple months, and I'm just making this post because I couldn't find anything in the same realm as my problem on a prior post. So started having super weird electrical issues one day when i put on my...
  9. 04.5-05 LLY Duramax Powertrain
    2004.5 LLY Sierra 2500HD with 165k miles Lately the truck has been bogging down after sitting at a stop light and when I go to take off it'll just blow white smoke. I have to put it in neutral whomp on it, it builds some pressure and puffs out white smoke and eventually the truck will blow some...
  10. 04.5-05 LLY Duramax Powertrain
    My 2005 Duramax is in the GM shop after having died on the road the other day. After much testing and research the tech had decided the crankshaft position sensor was bad. Replaced that and it didn't solve the problem. Now he believes it must be mechanical. So does anyone know what gives the...