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  1. 2001 - 2007 (GMT800) Non Powertrain
    Hey, I'm new to the fourm and not sure if I'm posting this in the correct place, but it seemed like a good fit. I have two 2007 LBZ duramaxs both with over 300k miles and both in pretty darn good shape. However, one of my trucks has a really annoying issue with the HVAC system that I have been...
  2. Gauges, Electronics and Wiring.
    I have had some 1357 switchback back bulbs installed as my front turn signals on my 2006 lbz for about a year now, they are white led when the turn signals are off and switch to amber when they are on. However when I went to wire in a new set of headlights which have a daytime running light...
  3. General Discussions
    Just putting it out there. I am tired of doing inferior wiring jobs. Does anyone out there have advice on pin kits/Connector kits and the like? i have some of the special crimp tools and stuff, been using the low profile butt connectors and marine heat shrink and it has worked for most...
  4. General Discussions
    Looking for the transmission wiring diagram for a 2011 GMC 3500 VIN 1GD323CL5BF140300 transmission wiring harness # 20943247 only made and used in 2011 which is now discontinued A dog or something got under the truck and ripped off the transmission wires coming out the rear of the transmission...
  5. Gauges, Electronics and Wiring.
    Help! 2006 2500HD Allison LBZ. won't start, P0340 camshaft position sensor wiring 5 VOLT Reference to low reference is: 5 volts Camshaft signal to ground is: 0 volts, also pulled pin #56 at ECM also 0 volts here as well... Bad ECM? Is there anything that would cause 0 volts here? Thanks!
  6. Gauges, Electronics and Wiring.
    Hey guys, got a pickup, 2008 chevy 2500hd, and the right side lights dont work. The front marker light and rear tail light. Bought new taillights cause i was told it was just taillights, installed new tail light harness. Taillights are led, front markers are halogen. Checked fuses and they...
  7. Gauges, Electronics and Wiring.
    Hi all my father in-law has got a 2015 LML nothing done to it he had me check out a smell he had that day come to find out the battery distribution block on the passenger side with the 4 main posts. on post 2 with the wires that run around the firewall side and one to the alternator was HOT so...
  8. Gauges, Electronics and Wiring.
    Okay, so i went to move my truck around the driveway tonight, and i noticed the background on my edge had changed. (insight cts2) so i clicked on it messed with it a little and got to the diagnostic sections and checked to see if it had any codes. well it does. here’s the codes: P0532 (something...
  9. 911 Problems Forum
    So I have a 2007.5 chevy silverado with a 6.6 duramax and a allison 1000 trans and had the trans rebuilt because I have High horse plans for this truck and figured id get that out of the way first I installed the transmission and now the truck wont even try to shift into a gear and will say...
  10. 2017-19 GM T-K2 Platform Powertrain
    2019 LTZ 2500 101xxx miles, not stock. Revised post. I’ve been running this truck for the last 11,000 miles with custom tuning with zero problems until 3 months ago. I brought the truck down to the border of Texas for work and everything started going wrong. Originally the truck started...
  11. General Discussions
    I have an 05 5500. I keep blowing the turn, stop, parking/running lights when I turn on the headlight switch in the cab. I removed the inner fender on passenger side and noticed 5 wires had rubbed through so I fixed 1, and moved on so I wouldn't mix the wires. Still keeps blowing fuses. I have...
  12. Gauges, Electronics and Wiring.
    Hello I have a 2007 gmc 2500 classic. For the past few months my passenger side headlight has been very dim. Also I get a turn signal on message on the dash when the turn signal is not on. Yesterday the blinker started blinking fast so I figured there was a bad bulb. However it doesn’t do it all...
  13. Gauges, Electronics and Wiring.
    I have a 04 LLY that I have been adding lights to it. I ran into a snag on the tailgate light that is a three color hard wired to the driver's side lights. I either get brakes or running but not both. Normally this is not hard wired and plugs into the trailer wiring which looks awful to me...
  14. 01-04.5 LB7 Duramax Powertrain
    So a couple of months back I rolled my truck in a freak accident two weeks after purchase sadly, and although I was able to get it driving again has never quite looked as good as before considering I did it by myself in a barn. Recently I have been given an opportunity that I just don't want to...
  15. Gauges, Electronics and Wiring.
    Bought a 02 2500HD, it was a commercial plow truck. Previous owner had made a custom mount to get rid of third brake light and mounted a light bar for reverse. it didn't work when i got the truck. took it off to see how it was wired and test wiring. there's 2 sets of wires up there. the plug...
  16. Interior
    Anyone know why it’s doing this? The cluster is good on it.
  17. Gauges, Electronics and Wiring.
    Bare with me it’s a bit lengthy. Have a 2010 LMM that’s been giving me TCM and ECM communication codes. Traction control and ABS lights come on and at higher speeds it will hesitate to shift. Took it to a shop the first time and they found a blown fuse (unrelated) and a bad wheel speed sensor...
  18. Gauges, Electronics and Wiring.
    i traded the truck for my 03 6.0 its a 2002 GMC SIERRA 2500 crew cab short bed. the radio didn't work so i pulled it out and took a look at the wiring only to find half the wires weren't even hooked up. after rewiring the radio it worked fine for a day ish. i went to my local reservoir for some...
  19. 11-16 LML Duramax Powertrain
    Hey guys, I have a 2013 duramax and it recently died on me while driving and wouldn’t start back up. I replaced the batteries and alternator since both tested bad, and I figured my starter was bad since there was a click but no crank. Well I went to remote start my truck and the wire from the...
  20. Gauges, Electronics and Wiring.
    Having issues with fuel injectors on a LLY. Have replaced the wiring harnesses,had the FICM rebuilt and the balance rates are in tolerance. Still get fuel injector codes.
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