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1-19 of 37 Results
  1. OEM Issues
    As I said, battery replacement - 3 day then no start just louder clicking sound. Battery is fine but tried another battery to eliminate it and the same thing no start clicking. The clicking sounds like it's coming from the driver side of the engine near the area of the top of the intake...
  2. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    Few days ago I got the P0510 code “closed throttle position switch” on my 03 TB 4.2 with 102K km (63K miles) I already had plans to clean the throttle body before summer so I’m going to do that now and hope it will solve the problem and I wont have to buy a new throttle body. In the last few...
  3. OEM Issues
    My ‘02 envoy has a misfire I have change the spark plugs and set gap to .41 ~42 and coil packs the cylinder is getting spark I even took the spark plug out put another in take the ignition coil out set a ground wire to the spark plug and put the plug on the ignition coil out side of the cylinder...
  4. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    Greetings. Have a 2006 Trailblazer LS with the 6 cylinder. Got a preprogrammed replacement pcm to replace a faulty unit. Swapped the old unit out and new one in. Trying the key "learn" process and having issues. When I turn the key to try and crank the engine, it should turn over, right...
    pcm
  5. OEM Issues
    So I recently woke up one morning to a knock on my door from a family member asking for a jump because their battery just died. So I get up, throw on some shoes and head out to my 04 TrailBlazer LT and start her up (nice) I walk over to put the cables on the dead battery and right as I turn...
  6. 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...
  7. 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...
  8. Audio and Electronics
    So I picked up a 2006 trailblazer 4.2 and the dealer said that they didn't think anything was wrong but that they had taken the aftermarket remote start off as it was causing problems. So I drove it home rest of the day and next day runs good except the gas cap light came on. But was fine...
  9. OEM Issues
    Hi everyone, I'm new here. Please bare with me. I bought a 2006 Trailblazer 4.2 LS 2WD in January of this year. I LOVE my car. That being said, I've ran into some problems in the last couple months. First month of having it, it ran like a champ and then one morning, I turned it on and it was...
  10. General
    Hello! Not sure if anyone is still active on this forum but reading some of your old posts *almost* saved my vacation. Short Story:I am currently looking for the PCM ground that I believe to be on the passenger side of the engine. If anyone could point me in the right direction, I would...
  11. General
    I am trying to determine if a problem a friend is having is the PCM/ECM. His 2003 Trailblazer dumped its tranny and so he grabbed one off of a GMC Envoy(as he tells it). He had driven the Envoy to be sure the tranny was good, no problems. After his 'tech' swapped the transmissions, and...
  12. The "How-To" and DIY Section
    P0756 Shift Solenoid B Wont go away - Need Help I just bought a 2004 I6 2WD with 150k miles. The truck had sat for an extended period due to engine missing on 4-5-6. Towed it home and did the tune up: drained gas tank, cleaned throttle body, new plugs, fuel filter, coil pack for #4 cylinder...
  13. 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...
  14. General
    I need to know if I get a pcm from an exact make and model trailblazer can I just swap them out and ride?
    pcm
  15. Air Induction
    Hey guys, I have been scouring this site for a couple weeks now trying to find a solution. First off, I have 99k miles on my 05 TB. Let me give you a walk through with my issue: Vehicle was running great, but I was approaching 100k miles so I decided to swap the spark plugs with the AC-Delco...
  16. OEM Issues
    I have a 2005 Trailblazer LT 4x4 with the 4.2 I6. 158k miles Wife recently noticed (2-3 days ago) that the rpms have been fluctuating higher during shifting. I drove last night and confirmed. 35mph- 2500 starting rpms, shifts and goes up to 3000—3500 for a quick second and then settles back to...
  17. General
    I think I had this posted in the wrong section, I will repost it here: My 2006 Trailblazer 4.2 L won't crank/start. The car is driven regularly. Some unusual symptoms: 1. Cannot crank the starter with key....Battery directly to the solenoid will crank (but not start) the engine. 2. Cannot...
  18. Engine Tunes/Mods
    Hi everyone, Before you get offended from what I am going to say, I'm not trying to put out a bad review to PCM4LESS, and there are many threads on here praising them, in which people have LOVED their tuned PCM's. I just recently installed my tuned PCM from them and wasn't too impressed...
  19. Engine Tunes/Mods
    Hi everyone, I am new to the site and have just ordered a tuned PCM from PCM4LESS. I was an idiot and didn't read the instructions that I now need a CASE relearn. I have not yet found anyone in Minnesota that knows how to do it or has the Tech II. My local Chevy dealership said they'd do it...
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