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ignition

  1. Gremlins in my trailblazer

    OEM Issues
    HELP so I started out with my check engine light coming on got code p0121. Then started having trouble starting truck every other time the battery gage would go up and down a little and the icon for security was partially lite. Then truck wouldn’t start just click click click. So disconnected...
  2. Unusual ignition Issue!!!!

    02-09 General Tech Q&A
    I have scoured this site for anyone with similar issues but sounds like I may be a pioneer to this one. I have an 06 trailblazer ls 4.2 4wd and have just finished putting a used motor in it but have yet to get it successfully started. I originally tried using the pcm that was on that motor and...
  3. 2005 TB EXT 5.3 wont start, no click, ignition switch good battery good

    OEM Issues
    My trailblazer randomly would not start one morning. Key on, dash lights up, radio works, etc. Go to crank engine and the whole car goes dead. Battery is holding well over 12 volts, so thats no problem. I replaced the ignition switch yesterday, still the same symptoms. Thinking it may be a...
  4. 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...
  5. Engine turn over with no key

    General
    I have owned my 2007 TBSS since it was brand new. Due to the famous engine oil pickup issue it sat for 3 years with 77,000 miles on it. I replaced the engine with a factory re build in October 2016. Its now April 2017 with about 88,000 miles on it and the strangest thing happened. I was...
  6. Intermittent Failure to Crank

    General
    First time poster, hoping to become a regular around here. I've got a 2006 Trailblazer ext 4x4 with the 5.3 V8 that has suddenly decided not to attempt to spin the starter when the key is moved to the start location. Battery charge and grounds are fine. With the hood open and the main fuse block...
  7. Starting failure

    Suspension
    :hopeless I have problems with my Trailblazer EXT 2005 4.2L I-6 Engine. When turning the key to the "ON" Position, it would go just fine but when I click it to start, it just won't start. Then when I tried shaking the battery terminals, it started. Then it went over and over again. I just do it...
  8. [SOLVED] NOT SOLVED!!! Under Dash Lights/Dash Camera

    The 02-09 "How-To" and DIY Section
    I am wanting to install some LED lights under my dash and seats. I would like them to come on when I turn my headlights/dash lights on. I am also replacing the factory stereo. Could I connect the hot on the LED lights to the illumination wire on the radio harness to make them power on when I...
  9. Continuing Misfire Problems- What's Next?

    OEM Issues
    Hey Everyone, I'm new here and have an issue I'd like to get some better insight on. I have a 2004 Envoy, I6 with a continuing misfire P0300 issue. 150,000+ miles. Several weeks ago, the engine started to misfire (blinking check engine light, running terribly). I put in AC Delco plugs about...
  10. [SOLVED] NOT SOLVED!! Reset transfer case control mod, now engine wont start...

    The 02-09 "How-To" and DIY Section
    As the title would imply, I did a reset on my TCCM because I cant get my 04 envoy to come out of 2 wheel drive after having replaced the transmission. I did this by unhooking the battery, and unplugging the TCCM (hooking back up in reverse order) as a mechanic friend told me to do. However when...
  11. Okay, I give up! SS Trailblazer won't turn over.

    General
    I have been searching the forums on a few sites for a few days trying to find a clue as to what's happening with my TBSS. I promise I'm not the guy that just posts because he's too lazy to look. (I bet after this someone will find the thread I was looking for and call me out, haha) Alright...
  12. 2008 Envoy - Gear Shift Stuck

    General
    I have a 2008 envoy, I turned off the car and the key was caught in the ignition, went to turn it back on and the car was completely dead, no power to anything, so I: 1. checked the battery and it was dead and so I replaced it, the car was energized as normal, I could start the car but the...
  13. [SOLVED] code scanner read a code for my ignition

    The 02-09 "How-To" and DIY Section
    My troubles all started after I brought my 02 trailblazer to AutoZone for them to diagnose why my check engine light was on. The result was that my fan wasn't running as optimally as usual, and he said, "Your fan is still working and your SUV isn't overheating so I wouldn't worry about it too...
  14. 2008 Trailblazer LT ignition problems?

    General
    I need to know how to diagnose ignition switch problems. Don't have much money so I can't pay to use expensive equipment or expensive mechanics. I do have basic tools including test light and volt meter.PLEASE HELP
  15. [SOLVED] Ignition switch?

    The 02-09 "How-To" and DIY Section
    Hello everyone. This is my first time posting anything here and I hope that someone can help me. My 2008 TB died on me while driving down the road like it was out of gas. It cranked back up a few times after that but died after about 10 seconds. Now it will not turn over at all. When I have the...
  16. [SOLVED] Key Stuck- shifter won't stay in Park

    OEM Issues
    Just thought I'd share this. Hope it helps some folks before they run out and buy an ignition switch or shifter assy. Symptoms: Key stuck in ignition, won't turn past ACC position. Shifter moves freely without pressing the brake pedal. I took the shifter boot off and saw that the locking...
  17. A few electrical problems NEED HELP

    General
    I have a 05 Envoy. I have been having problems with the heater, and now it has seem to move to more of the electrical in the truck. In the last week and a half I have had to use a battery charger twice to start the truck. Once I do that and give my dad a ride to work the battery will stay...
  18. [SOLVED] Car wont start after put in starter (not solved)

    The 02-09 "How-To" and DIY Section
    hello trailvoy community, i am a new member and i am in the middle of fixing a 2004 Chevy Trailblazer I6 4.2 anyways, originally the starter was bad so i took the starter out bought a remanufactured starter from napa and installed it lasted one day then went out had the truck towed home and in...
  19. Problem with Starting Engine

    General
    I have a 2002 Trailblazer, and it locks out all power and the key gets stuck when trying to start the engine. I can turn the key to accessory and on and everything works (radio plays, lights/gauges come on), but when I try start to the engine there is one click and then everything turns off (no...
  20. Envoy Starting Problems

    General
    Hi everyone, I have a 2003 Envoy that is experiencing some serious starting issues. Sometimes it starts, and sometimes it won't. When it doesn't start, it won't even crank or attempt to turn over. All of the lights and electrical systems seem to be working, so it doesn't seem like a battery...
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