Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. Can i use the factory wires for a 04 trail blazer to run aftermarket equipment?

    02-09 General Tech Q&A
    - So im trying to replace my Headunit, two front dash tweeters, two front door speakers, and two rear speakers. - So i learned i would need a wiring interface to keep the features that come with the vehicle like OnStar, Factory amp, and like steering wheel controls. PAC RP5-GM11 Wiring...
  2. 2006 Envoy XL Aftermarket LED Headlight Bulbs Fit

    02-09 General Tech Q&A
    I have a 2006 GMC Envoy XL I want to install some aftermarket LED headlights on. I want to use the bulbs from the Company Lasfit that I have seen are pretty nice, but I am worried about fitment of the bulb in the headlight due to the large heat sink on the back. Being that the headlights have a...
  3. [SOLVED] Aftermarket Radio Not Working At All

    Audio and Electronics
    I have an 02 Trailblazer and about 3-4 weeks ago I installed a brand new Pioneer FH-X700BT head unit with a GMOS-1 wiring harness. Everything was in working order and sounding great. I was recently having some fluctuation in my RPMs from a cold start so I thought it would be helpful to clean...
  4. 2006 trailblazer LT aftermarket headlights

    What's going on guys? I'm having an extremely difficult time finding black headlights for my LT, tons of options for non LT though. Anyone else have this problem or a good site to find these headlights? Thanks.
  5. [SOLVED] LED DRL Installation

    Audio and Electronics
    OK, so I grabbed these lights off ebay my only issue is I dont know where to run the wires exactly. They didnt come with much instruction. Just need to know which wire is the power wire I...
  6. no alarm?

    I was puzzled as to why my alarm doesn't go off. I've done numerous tests, including locking the door, leaving the window down and reaching my hand in to unlock the car. No alarm. Figured out that if you replace the factory radio or head unit, the alarm is basically disabled. I know that I...
  7. Amp Problems (2004)

    I installed an aftermarket headunit and amp in my 04 Trailblazer LS, now when i turn the vehicle on the RMS's go up and down, Can anyone help?
  8. Bose Replacement for huge install,Few Question? Plz Assist!

    Audio and Electronics
    So i just brought a 08' Envoy i'm a huge bass head and i'm planning on makin a custom made sub box for two L7 15" 5000 watt mono block amp, Four kenwood 6x9's 500 watts each, I also have four 6.5" kenwood about 240 watts for door panels hitting 1400 watts on a four channel amp. Now dis is...
  9. [SOLVED] 06 Tb Aftermarket GMOS 01 blowing up my radio fuses

    Audio and Electronics
    I am installing a pioneer 710bt into my 2006 trailblazer with onstar and no bose. I am using the GMOS-01 harness. The first time i tried, like a rookie :bonk: i didn't unplug the battery and fried my GMOS. After getting a new box i tried again and now when i plug the negative cable back into my...
  10. [SOLVED] TB gauge install

    Engine Tunes/Mods
    Hello Trailvoy community. I just finished my triple pillar gauge pod and i am about to install my new gauges. On both my fuel pressure sender unit and my transmission temp sensor there is a 1/8 (National pipe Thread). I need to know if on the 05 trailblazer there is a test port on the...
  11. Having trouble with a purchased exhaust

    Exhaust Mods
    hello all, mayb some of you have read my post in the past dealing with the same issues but i had bought a borla exhaust, (dual. cat-back), for my tblaze ls. but it did not come with the parts to install it on my truck, (my truck comes with a single exhaust stock therefore i do not have and...
  12. New Feature: Non-GM Part Number Database

    Site News
    Well, I got the other part of the database up and running, so now we have two databases- GM Parts (OEM) and Non-GM Parts (Aftermarket). Both databases can be viewed via the links under the "Resources" dropdown menu just under the site's header. You can also jump from one to the other from...
  13. Installing an aftermarket amp while retaining onstar/door chime

    Audio and Electronics
    Hey guys, So i have the Metra AXXESS GMOS-01 adapter and all the nessecery stuff installed. I am wanting to know how/if the door chime/OnStar will still be functional when i run all four door speakers on a seperate amp. Im not sure how all the wiring and what not works with the adapter. I really...