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electrical

  1. Died Suddenly while turning key

    OEM Issues
    I got in the car (2004 Trailblazer 4.2 2WD) and when I turned the key, all the lights came on, cluster, radio, and headlights, for about a half second then everything died. When I tried again I only got a dim Service Engine Soon light which shut off after trying to start. When I turn the key off...
  2. 07 Trailblazer LS horn won’t turn off, constant on

    02-09 General Tech Q&A
    When returning to the truck in a store parking lot, I went to unlock the TB with the key fob and the horn went “constant on.” Not a cycling like if the emergency button was pressed. Grabbed my fob, and then the Wife’s who was with me, trying to hit every button I could think of, with everyone in...
  3. Gas gauge not working please help

    02-09 General Tech Q&A
    Hello all I have a 2006 trailblazer Ls and Ive been trying to fix my gas gauge so far I have replaced the whole sending unit, I purchased a rebuilt cluster and I even replaced the fuel pump electrical connector and still nothing it just stays on E with the gas light illuminated please help
  4. Instrument Cluster Issues

    OEM Issues
    My instrument cluster in my 05 EXT is all wonky. My oil pressure and temperature gauges are shot and stuck in the same position. My speedo has a mind of its own, starting at all different points, 35, 70, 130. What can I do to fix this besides sending it in, I have been soldering since I was 7...
  5. 03 Envoy Started for A Second and Died

    OEM Issues
    Hey all! My 03 Envoy just died on me today :( . I was at work and went out to my car to get some air conditioning for a few minutes (I work in a food truck and the A/C was broken so it was getting up to 100 Degrees inside) I started it and it ran for about a second and then died. I wasn't really...
  6. 2008 Trailblazer LT3 electrical issues

    General
    I've read several posts detailing SOME of the issues I'm having, but haven't seen any with ALL of the issues... I replaced my battery a few weeks back. Almost immediately afterwards the following problems started... let me also preface this with it runs and drives fine. A tech 2 scan tool...
  7. Air Conditioning Issues

    General
    2006 Saab 9-7x 4.2i We started noticing the issue on a road trip where we were driving 10 hrs/day. It's likely the issue was occurring before that but we didn't notice because it only got driven 10-15 minutes at a time. When we first started driving the A/C was strong and cold. The further we...
  8. A crazy amount of issues

    General
    Hi all, I don't know a lot about cars, and have no clue if I am posting in the right place, but my 03 GMC Envoy is experiencing quite a few issues, and I was wondering if anyone had any input. All the codes I am getting are P0420, P0442, P1345, P0332, P1482. The only drivability issues I...
  9. JL Audio 12W4-4 Amplifier

    Audio and Electronics
    i got a pair of 12w4-4 sub-woofers about a week ago and they are actually pretty cool. they are from 1996 and made in the united states so they are as old as i am. they still work great and i just replaced the foam ring on both of them. i would like to wire them into my 2005 trailblazer ls and...
  10. Strange Electrical Issues

    OEM Issues
    I have a 2004 Chevy Trailblazer LT 4.2L 4WD and have had it about a year now. And I've noticed some strange things going on with it. As I'm driving occasionally the stereo will switch on its own to dvd or if its on dvd then to cd or cd to radio. Whichever one would be next if I were to press the...
  11. Is this the end of an era?

    General
    Dear Wizards of Trailvoy.com, My 2002 GMC Envoy has been lovingly maintained for just over 173,000 miles. Though wearing a few dents and scrapes, my beloved Envoy has always ran very well, and has been kept up to date with new parts and maintenance. To my shock and chagrin, the vehicle...
  12. intermittent starting issues

    OEM Issues
    Issue I believe started about 4 days ago with stock radio clock being reset one day with no other observable power issue. I put the new time in and keep an eye out for any other issues, but can find non. Other that the radio clock seems to never hold time. Now today, I go to start the engine...
  13. Rear Defroster causing window electronics to short

    OEM Issues
    I have a 2003 4.2l I6 LS Trailblazer with over 186K Miles. Whenever I engage the rear window defroster it shorts out my power windows and locks intermittently almost like a timer every few seconds it shorts out everything. I have gotten by just not using the rear defroster but I am about to do...
  14. Turn Signal Switch or Flasher Relay Module Problems

    General
    I have a 2006 GMC Envoy and lately, there's been a weird issue with my left turn indicator function. If I push down the switch, the signal will occasionally flash briefly (for 0.5 second) and then abruptly turn off. Right turn signal works fine and has never had any problems. This happens...
  15. Strange electrical issue with random wipers and lights working when they shouldn't

    General
    Hopefully someone will be able to shed some light on this... :hail: Everything started 2 weeks back, front wipers would start to randomly engage while driving, this would usually happen along with the washers. Sometimes they would spray for long time, sometimes just a squirt or none at all. I...
  16. Fan Goes Out, Lights ABS Waring Light?

    OEM Issues
    On my 06 Envoy base model, I had a strange occurrence. Driving up the highway, I had my ABS, Stabilitrak, Brake, etc., warning lights all come on, AND the blower fan for the A/C went out, all at the same time. Turning OFF the fan made most of the lights go out, and turning it back on made them...
  17. [SOLVED] Aux Power for Trailer

    Towing
    Hello, Hopefully someone can help me. I have my 12volt consent power hooked up to provide 12volts to my trailer, everything was working great until now. My 12 volt line is dead at the "Post" located on the engine fuse box. I have checked several of the fuses and they all seem to fine, am i...
  18. '05 Envoy XUV blows IGN B when key turned to ACC

    General
    Strange electrical problem I'm having trouble tracking-down. A week ago I'm in the drive-thru ATM and the Envoy quits running. Won't crank, windows won't go up, and can't get the truck out of park (radio and door locks work, though). Have it towed to a shop and they take the column apart but...
  19. 2005 Isuzu Ascender - Won't Start - Makes a Clicking Sound

    OEM Issues
    2005 Isuzu Ascender 4.2L V-6 I recently started having issues with my truck starting. I have previously had some issues that appear to be electrical so I'm not sure if this is just another symptom of a bigger electrical problem or not. I was leaving work and the truck wouldn't start. When I...
  20. Headlight Problem

    Exterior
    My 2004 Envoy has OPT7 HID headlights in them. I wired the BCM so that during the daytime, the DRLs will not cause them to flicker. Regardless, I shut them off anyway to preserve the life of the bulbs. They have worked great, no harness or relay, and seldom flicker upon startup. HOwever...
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