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  1. The 02-09 "How-To" and DIY Section
    Hello! I have an 04 TB LS with super trashy paintwork and enough door rust to make me want to replace the doors instead of repaint them. A guy near me is parting out an 06 TB LT with nearly all the options(heated seats etc.), while my TB has essentially nothing in terms of equipment. I don’t...
  2. General
    So I bought this 06 Trailblazer last November. Haven’t driven it 1000 miles yet. I’ve had a lot of electrical issues since I got it. 1. The rear door and wiper hardly ever works. I try to lock it and it stays unlocked. Every now and then the lock will actually work and lock the rear door. But...
  3. OEM Issues
    I have a 2006 GMC Envoy XL that I’ve been working on. I’ve been trying to improve or fix issues with it and next up on my list is the door/key/light chime. The chime to tell me to remove the key or turn the lights off only works on occasion(usually when in warm weather and on the highway for...
  4. Audio and Electronics
    I have a 2002 Trailblazer with a Bose stock radio which I am replacing with an android head unit. I understand I need a certain type of wiring harness however,I don't need On-Star or the steering wheel controls but I would like to retain the chimes. I already have 2 15's installed and my own...
  5. General
    Hey everyone I have been on this forum ever since I purchased my 03 LS 4WD and pretty much every little issue that has come up I've been able to find an answer for. So, I thank everyone on here for that. Now, I have a real head scratcher, my truck won't start at all. No work done recently...
  6. The 02-09 "How-To" and DIY Section
    Hi all..this is my first post..hope someone can help. I have a 2007 Trailblazer that was rear ended. I replaced the drivers side tail light assembly w/a new after market one. Installed easily, but the brake light is not working. The assembly came w/bulbs and I did shake it a bit and didn't...
  7. The 02-09 "How-To" and DIY Section
    Was looking under my hood trying to figure out where to wire my new lights through. Looked at running it through the fire wall where all the other wires are entering into the car. However, the wires are taped tightly together with electrical tape and its impossible to squeeze the wire through...
  8. The 02-09 "How-To" and DIY Section
    Hello, I have recently replaced my head gasket in my 2004 trailblazer, 4.2I 4x4. Everything went back as it should, I put the valve cover back on, got everything connected. Here is my delima. When you put the wiring harness back on top of the valve cover, and you have 2 main wires that run up...
  9. General
    Greetings Trailvoy world, I have a 2003 Envoy SLT, a couple months back my odometer cluster and radio lights (not the clock) would stay ON when the vehicle was turned off? it would drain the battery after being on all night and I would have to boost. I noticed that while moving the passenger...
  10. Interior
    I recently attempted to change my factory double-din nav unit to a single din Alpine bluetooth CD player. I purchased the GM interface for the Bose system, and the interface for steering wheel controls. Before hooking up the speakers to the new harness I went ahead and hooked up power ground and...
  11. General
    Hi Guys... I have searched and searched and found little bits of help in numerous places but nothing seems to be working right for my situation, maybe someone can help me further. First, drivers door controls work randomly... DIC, doesn't show odometer reading, then on random everything goes...
  12. OEM Issues
    Hi- I am Ralph and I am sort of new here. I haven't posted before because I have been searching the forums and learning. I sold my 99 Tahoe and got an 06 TB with only 26K miles on it! I was the founder and owner of the Tahoe/Yukon mailing list/forum over on Yahoo Groups for many years and just...
  13. Audio and Electronics
    I'm looking to install all of my car audio myself in my 2006 LT Trailblazer with the bose/onstar system in it. I am going to be running 0 gauge power wire, Pioneer DEH-P8300Ub head unit, 2 MTX Thunder 8000 12" subs. wondering if i Should replace the speakers also and get a new speaker amp or if...
  14. OEM Issues
    Hi everyone, I didn't see a specific thread dedicated to electrical, so I hope I'm posting in the right place. A few nights ago, I was driving home. Had been on the road about 5 minutes. Suddenly, the radio dies, guages on the dash die (Oil Pressure, Fuel, Temp, Voltmeter), Tach and Speedo keep...
  15. Interior
    Does anyone know which wire in the harness for the stereo controls the dash lights that dim the stereo along with your instrument panel lights? I am going to mount a little tiny LED light inside of the dash kit for a new deck I am putting in, and I want to jump the wire that is controlled by...
  16. General
    Hey everyone, I have a semi-major issue. This evening, I hooked up two reverse facing fog lights, powered by the 12v power source in the rear of my TB from the cigarette lighter receptacle. This worked great because I had it powered through a fuse, which connected to an on/off switch provided...
  17. Audio and Electronics
    I've had my Trailbazer for a few months and in my opinion it's definitely the best vehicle I've driven. I really enjoy my music but don't really have much money to spend on an after-market system. I figured that I could start with a fairly decent sub but I really didn't want to spend more than...
  18. Audio and Electronics
    i have 2007 trailblazer with the bose system. I just hooked up 2 12" kicker shallow subs to a lanzar vibe 276 amp. they were working completely well for about a week. then they started randomly turning on and off. I went somewhere with my subs on and when i came back in the car to leave, the...
  19. Audio and Electronics
    I want to wire up some LEDs behind the speaker grills in each door, but not sure which wires to tap. I checked the wiring diagram under the resources section but that didn't quite lay things out as I'd hoped. I've run a few searches, and came across some schematics of the wiring, but still...
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