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1-20 of 24 Results
  1. General
    2007 4.2L Chevy Trailblazer Recently after a bit of a cold snap I noticed I was no longer charging the battery. After the usual diagnostics I replaced the alternator with a used one. Now I know I will get the “the alternator isn’t any good, replace it with a new one “. However I have the luxury...
  2. General
    I was having a dead battery after every drive i replaced the battery now im getting low voltage or too much voltage to the battery. Should i just buy a new alternator and belt they are both oem and this is a 09 Trailblazer with 175,000 on it n
  3. General
    Today my battery light stayed illuminated while I was driving. About 30 minutes total. It started just fine, and in my opinion the charging gauge was acting normal. I had a flat battery during the winter but it's been fine for the past of 2 months. The alternator was replaced just before I...
  4. 02-09 General Tech Q&A
    My 2005 trailblazer ran perect . I was on a dr appointment trip hour from home. my gauge started flashing saying battery not charging. I barley made it home. by then not a single light nothing worked. soon as I put it in park it died. Key wouldn't even come out. 30 min later it started like...
  5. 02-09 General Tech Q&A
    hello all. i have a 4.2 04 with 143600 on the clock. ive been having an issue where using large power draw such as windows or using heat on full blast or anything that highly draws power very suddenly will cause reduced engine power with code p2138 "Throttle/Pedal Position Sensor/Switch D/E...
  6. General
    Hello All, I have an 05 Trailblazer I have owned since 2006 and I had to replace the positive cable earlier this week. I took it on a long drive over good and poor dirt roads and decent paved roads with no problems and went home. About an hour later on a drive to the gas station, the...
  7. Audio and Electronics
    Hi, on 2002 Oldsmobile Bravada, whenever the battery is disconnected or the vehicle jump started, the needles on all the gauges and the speedometer would spin all over the place and not return to their original position. I have to disconect the battery again and try couple of times before they...
  8. General
    Hi everyone, 04 LT, 170k, 40k on the present battery, when I start the truck it often doesn't charge, battery light is on, sometimes when I start driving it will start charging, other times if I shut the engine off and restart, it will charge normally. Had this problem once or twice a while back...
  9. The "How-To" and DIY Section
    I can't really seem to get a fix on why a 2005 Alternator can't be fit on a 2006 Trailblazer 4.2L LS. Is it the amps? The bracket? The connector? 2006 Trailblazer is out on an Island as the 2007-09 also do not retro. I want to fit one of those HO Alts but most only go to 2005.
  10. Audio and Electronics
    A few years ago, I installed a new audio system in my 2003 TB without Bose. I replaced the head unit, front component speakers, and added a subwoofer. The head unit powers the rear stock speakers with about 20Wx2 RMS, I have a 50Wx2 RMS amp powering the front components, and a 350Wx1 RMS amp...
  11. OEM Issues
    I replaced the alternator because it was charging way to high and now my battery keeps dying. I had the battery and alternator test at Advance Auto Part and was told the battery was good just needs to be charged and the new alternator is charging at 15.5v and my battery is still going dead. What...
  12. General
    My TBSS seems like the battery is weak when starting. How do you know when it is the battery and when it is the alternator that needs replacement? THX.
  13. OEM Issues
    Hey everybody! I have lurked around quite a bit on this site. There is definitely a wealth of info here. Unfortunately I didn't want to make my first post about an issue of mine, but here it goes. I have been suffering from the battery not charging message and the battery light being on. Here...
  14. OEM Issues
    Hi, I have a 6 cyl 2004 Envoy XL w/ 145k on it. Around 50k, I began to see the voltmeter fluctuating between 12 - 14. I saw the lamps dip, and heard the heat / AC fan slow when it happened. No biggie really. Recently, I have noticed the lamps fluctuate back and forth very quickly (1/8-1/2...
  15. General
    I bought my car since 2 weeks, working excellent except one issue The battery indicator red lamp in the instrument panel always ON When I start the engine, this lamp goes off for 20 sec and return on again The voltage scale of the battery in the instrument panel reads 14.5 I did check on the...
  16. OEM Issues
    :confused: Hello, and some advice, please! I had low dash voltmeter readings 2 weeks ago (9v) on the OEM alternator and a 2 year old Pep Boys battery. I ran right to my mechanic and he tested the system. He replaced the battery and serp belt but said the alternator was OK. The next day, I got...
  17. OEM Issues
    ok i have a 2004 trailblazer LT 4x4 4.2L I6, and when its sitting in park it bogs down and acts like its going to die(sometimes does), and while in drive there is a very noticeable vibration throughout the TB. Any ideas on what is causing this?? because i am clueless. Also the battery gauge...
  18. General
    Hi all. Just purchased a certified 08 Trailblazer LT1. Love it so far, but have been noticing a few issues, and wonder if I could get some advice before making an appointment with the dealer (which is over an hour away). 1) Passenger window is slow to rise, sometimes stops completely. I'm...
  19. General
    I went to start my 06 this morning and it wouldn't turn over. All of the cluster warning lights turn on like normal....when i tried to turn it over the first time it started, all the lights stayed on, then it died. I tried a second time and got next to nothing out of it, and it made a rumbling...
  20. Engine Tunes/Mods
    After getting the 02 engine swapped with an 06, Ive been noticing on and off weriod screech noises on the engine. The Serp belt was already replaced just to let you know. My friend thinks its has something to do with the alternator since the serp belt is a little off aligned with the idle...
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