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  1. Gauges, Electronics and Wiring.
    Putting together a "Frame off build" for a customer. The Truck was torn apart by different shops but in boxes to never be assembled again. I Inherited this project as a bare frame with axles and many boxes with parts. Since then I have assembled a lot of the truck and have the cab and all the...
  2. 911 Problems Forum
    Hey guys, truck has been sitting for a while (its basically my odd task vehicle) and I just replaced the fuel lines and sending unit in the tank. It seems like its just one thing after another with trying to keep this truck going. I moved it all of 100ft to the other side of my property and...
  3. 911 Problems Forum
    Hello All, apologies in advance for what might be a longish post. My truck started having odd electrical issues when I try to start, flashing interior lights, dash lights and icons, horn blowing, locks intermittent etc, with no crank. Here's the video: So I check the batteries voltage which...
  4. Gauges, Electronics and Wiring.
    Truck is a 2007 LBZ Classic. Drove the truck home from work one night without any issues. Tried to remote start the truck the following day and was too cold for the remote start to work properly so I canceled the remote and went out and started the truck. Soon as the truck started my parking...
  5. 2001 - 2007 (GMT800) Non Powertrain
    I started diagnosing my 2002 2500 Duramax because all four of my crew cabs windows wont roll up of down. I've replaces the doors with known good doors I thought that would fix it with the new wiring harness in them put on the new doors and still no power. My window switch has power to the door...
  6. General Discussions
    2010 2500 Duramax Hey all, I’m looking for some help here as the dealership I took it to was basically useless (as far as I could tell). I took a video but am unable to attach it to the post. So here’s the issue. Periodically when I turn my truck on, I have a series of electrical issues...
  7. 2007.5 + (GMT 900) Non Powertrain New Body Style
    Hey everyone, Just wondering if anyone could help me identify some of these cut wires. I'm rebuilding a truck(plenty of bodywork and paint) so I'm just looking to figure out these last little bits. Any suggestions or pointers would be a huge help.
  8. 06-07 LBZ & LLY Duramax Powertrain
    Vehicle: 2006 Chevy Silverado LBZ Bear with me, I am currently diagnosing a no start and electrical isn't my forte. Car started fine Saturday, I may have noticed a half second delay when cranking, but nothing that screamed concern. Fast forward to today after it rained I went to start it and the...
  9. General Discussions
    I just got a 17 silverado and noticed today the auxiliary battery negative terminal is disconnected. The cap is still on the battery. The truck drove 4 hours home fine, starts and seems fine today. Why would this be disconnected?
  10. Gauges, Electronics and Wiring.
    Hi all, I'm having some issues with my 2001 lb7 3500 dually. Three days ago I was driving in town, stopped in a parking lot and turned off truck, I immediately went to restart truck to park better and just a click. No crank at all. Starter relay is clicking to engage. but just a click from...
  11. Transmission Shop
    I have an 05 duramax with some electrical problems regarding the transmission. Every single pressure control solenoid and shift solenoid are throwing codes. I have a P0748, P0763, P0768, P0773, P0778, P2810, P0743. I’ve cleaned the tcm connectors and the transmission plug. The problem is...
  12. General Discussions
    Hi, so I have a 2003 lb7. Has 300k miles on it. I recently installed two lift pumps, one is the filter housing from black market performance and then a ppe lift pump by the tank. I also have aftermarket stereo installed and led headlights. I still have the stock 145 amp alternator installed, im...
  13. 06-07 LBZ & LLY Duramax Powertrain
    On my 2006 Silverado LBZ I’ve been having a random issue where I’ll go to start the truck and it will need a jump. I’ll go start and it’ll just click but once I pull the key out and close the door the radio stays on a blue screen (aftermarket) and the dash lights up. I noticed when I turn the...
  14. Suspension&Steering
    So I’ve done some digging on here and haven’t found a answer to a question I have. I have a 2019 2500 with a intermittent stabilitrak light and reduced engine power. There is no rhyme or reason to the condition and I have a difficult time getting any codes for it. Both my scanner and the...
  15. Towing & Hauling
    I’ve had the truck for four years. The first three, the trailer brakes worked perfectly. I’ve had “service trailer brake system” on the DIC for months now. After research, I’ve seen most have found success with replacing a fuse or replacing the relay. Ive replaced the fuses, I’ve replaced the...
  16. Gauges, Electronics and Wiring.
    I have a 2007 GMC Sierra SLT 2500 HD, having issues with the cab bus issue on both networks. It all started one day when I was driving down the road and I turned on the AC and all dash gauges pinned all down to there starting position (bottom left) got codes for no communication for BCM, HVAC...
  17. Aftermarket Mods.
    I got a pair of 2015 style tow mirrors off of eBay for my 2005 gmc. the brand is Yitamotor and I was wondering if I would be able to get the front turn signal to also be a running light. I do not want to buy the wiring harness from boost auto. Does anybody have a way to make them running lights...
  18. 911 Problems Forum
    Posting for my father trying to get an idea if anyone else has experienced this. We have a 2002 chevy duramax and lately it has been going into limp mode when tow/haul is on and then when we plug into the computer it throws random codes, and there not always the same codes. We think it might be...
  19. Kodiak & Topkick Forum
    I have a 2006 Kodiak that the 4x4 selector switch quit working. Everything was fine this fall, and I did some work on it over the winter, new radio and converted the headlights to LED, and then took them back out due to interference even with filters. I hadn't used the 4x4 for quite a while...
  20. Gauges, Electronics and Wiring.
    So I have an 08 Sierra 2500HD with Cognito 6" lift. Fass 150 lift pump, deleted factory fuel filter, larger CP3 inlet and outlet fittings Banks Doubleshot water methanol system Banks ram air intake/super scoop Modified fuel rail with ported inlet/race plug Dpf and egr deleted High flow Y-bridge...
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