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Chevrolet TrailBlazer Start Stall and Idle Problems



  • I've seen some of the other posts to your question and agree, that the starter can be checked w/out replacing it.

    If you can get it started, I would take it to an AutoZone or other car parts store and have them test the battery and alternator.

    Check the battery connections and make sure they are tight, check the main connections on the fuse block (just above the battery). My problem was a bad ignition switch. From all of the other posts I have seen, this appears to be the most common electrical problem. The ignition switch can be replaced for about $150. I had one place tell me they thought my problem was the alternator and needed to replace it $500 +/-, another told me the the computer $900 +/-. I thought that $150 was worth a shot, better than paying $500-900 to find out it still isn't fixed.

    From other posts I have read, it sounds as if any bad electrical connection through the ignition system may cause these same symptoms. If it is the ignition switch, it will continually get worse until it just won't start at all.
  • I have a 2002 trailblazer ext, I have had the 4wheel drive go out twice, transmission "blew up inside" @61k miles,right in front of the car dealership, lucky me. My back window gate pops open while driving, my windshield wipers go off on sunny days, I have replaced the alternator,brakes,tires (twice)battery twice, the doors are rusting on the bottom edges as well as the back gate. It has 81,000 miles I drive to work 5 miles each way, I am a woman and no one else really drives it but me and I do not "off road" NOW my $40k truck will not start ONLY when the outside temp is below 70 degrees?? If its hot it will start, usually. It will start first thing in the am no problem. After I drive it maybe 10 mins, take my son in to daycare,come out, nothing,it won't start. It reminds me off the sound an older car makes when you had to push the gas pedal to start it. I have had this car at the dealership FOUR times the supervisor even took it home and could not get it to duplicate this. I gave up because it was summer, well now its cold again and I cannot ever turn off my car. If I get gas or run in somewhere under 5 mins I leave it running.If I have to push on the gas to get it to start it will idle high for about 10 mins I can drive w/o touching the gas and maintain about 40 miles per hr??? And my clutch fan is going out, I guess,again only happens in the COLD. I live in Indiana Monday it was 91 now its 42, so its a problem. Does this make any sense? Even the dealership said they had zero idea maybe take it to a "backyard mechanic".....HELP
  • I am having the same problem with me 2003 trailblazer. it has 70k miles and has had starting issues for the last year. took it to the dealer august 06 and they couldn't relicate the issue so they did a lot of maintenance work and charged me a fortune and it did it again on the way home. if i stomp on the gas, it will finally start and idles high just as yours. now i am also having trouble getting the key out of the ignition when i turn it off. it is getting extremely frustrating!! :sick:
  • I am having a problem, when I stop and plave the shifter inpark, the engine turns off but I can't get the key to turn back past the ignition/acc position. I tried jammong the lever inpark with no luck, this happens intermittently. Anyone experience this before? 04 TB LS.
  • I had a similar issue with my 04 LS EXT. I would be driving and the engine would shut off. It happened on the interstate, residential streets, etc. I researched other Chevy forums and came across one that said it was a bad ignition switch. I bought the entire switch composed of three separate parts. To date it has not stalled on me; it's been 14 months.
  • tblazedtblazed Posts: 945
    Could be one of several things. A bad switch in the shifter [non-permissible content removed]'y, a bad electrical connection somewhere in the circuit, or a problem with the ignition key interlock mechanism or solenoid in the steering column. The earlier models have on the bottom of the steering column below ther ignition lock a little plug maybe 3/8" dia or so that you can pry out, then you can press a button inside the column to release the key. The newer ones just have a molding mark there where the plug used to be, the hole got deleted for some so-called safety reason. Your '04 may or may not have that access hole. (But a little drill would take care of that!) Good Luck!
  • dete5dete5 Posts: 2
    I bought an '06 TB in September of this year. Have had a problem with it ever since I got it in that it is hard to start and keep running until it warms up thoroughly. It almost seems like it is flooded, which is weird because it's injected. I have taken it to the stealership twice: the first time they said that I had alcohol in my gas. I agreed 100% since all gas has alcohol. They then said that it would cost $400 to clean the tank and that it was not covered by warranty. I called BS.

    I took it back after talking with the manager and he thought it might be the fuel pump. That got exchanged for a new one, they cleaned the tank and also replaced the crankshaft sensor (all under warranty), which they said was leaking oil. After all that, it's worse now than it was, which makes me think that we weren't event close the first time. Also, sometimes the tach stops working whenever it is especially hard to start the vehicle. It starts working again whenever I shut it down for a while and restart. All of these problems occur on the first start of the day, typically when the car is shut off for 8 hours or so.

    I have seen some posts about O2 sensors. Could that be it? Does anyone have any ideas?

  • tblazedtblazed Posts: 945
    If it is indeed a gasoline problem, maybe you got the dregs off the bottom of the storage tank that was mostly water and alcohol, or they just restocked the tank and the crud got stirred up, or the alcohol didn't get blended evenly and you got more than 10% blend, anyway some of the major retailers will guarantee no problems from their gasoline and will pay the related repairs. Of course you have to prove it.
  • dete5dete5 Posts: 2
    That's not it. They changed the fuel pump so that they could clean the tank out under warranty. Still have the same problem. Thanks though.
  • Hi:

    If your Trailblazer is 2002 or over, you will not see a V6. You will see instead a L6 (6 in line). The spark plugs are path through the valve cover. They are not placed as a V6 have it (near manifold).

    To reach spark plugs you need to remove the black housing over the motor (I am not sure is the name of the part is a resonator - it slow down the engine sounds). Then you will see 6 holes with something electronic over it - those are the ignition coils. You need to remove each ignition coil (each one have a plug) and then behind that is the spark plug. You will need to use a special wrench for spark plugs to remove them and place it again in the same order.

    I hope this helps.
  • :confuse: Our TB was recently in a wreck. There was only damage to the rear where the tail gait is. Mostly cosmetic. Recently , the car would not start . We thought it was try battery and we replaced it. Later on we found out that we needed to put the car in full park. When we did that it started. When my wife and i got off work we went to start the car and it would not start. We did the same steps before and nothing happens. We did notice that the brake pedal was locked. Could this have something to do with the car not starting
  • Thanks. I found that the transmission cable was broken. The lever was in Park but the transmission stayed where it was before broken (R - Reverse). I changed the cable and done!
  • I bought an 06 Trailblazer and had my one year anniversary Dec 6th of 2008. It has been a NIGHTMARE since I bought it and the dealership won't buy it back. I was hoping there were similar issues that someone could suggest that I have them look at at the dealership, they are ready to total it so they don't have to look at it anymore, I didn't think that was a good solution. Here are a few of the issues:
    -Sounds and feels like driving on rumble strips at 45-70mph LOUDLY.
    -Tranny intermitant shifting problems
    -Mild intermitant vibration at 35-70 mph in gas pedal
    -Diminished Eng Capacity Light comes on and off
    - Intermitant 12mph max speed
    -Speed/Power cuts out randomly (no more acceleration regardless of gas pedal pressure)
    -Trac light intermitantly on
    -Check engine light intermitatly on
    -Clock auto resets itself occasionally
    -CD randomly pops out on startup or shut down or while driving
    -Vehicle shakes and chugs worse than a disel pickup on start up occasionally
    -Cruise control sometimes quits on its own
    -Replaced transmission pump/ignition switch
    -Torque converter locking up (tech told me potential problem)
    -Starter sometimes has issues, turn key and click, hard turnover, nothing then wait 10-15 seconds and without touching the ignition switch the truck starts.
    -Continually warping rotors
    -Clunk on occasion when shifting from "P" to "R" or "R" to "D"
    -After startup while idling sometimes there is a loud clunk from the passenger side sounds like someone is kicking the side of the truck
    -Windows intermitantly work powering up
    -Transmission "whistles" when rpm's going up to shift occasionally
    -Radio/CD sometimes just shuts off
    That's about all I can think of off the top of my head I have had it in the shop at least 50 times in the past year and they keep telling me their computer doesn't say anything.....last week it lit up like the 4th of July but they still couldn't figure out why all the problems. If anyone can help with ideas that would be great, I don't know what else to do. It is all still under warrenty thank goodness!!!
  • Hi everyone, I have a 1999 Chevy Trialblazer, the engine cranks but wont start. It gets fuel and spark. I'm not that good with engine, what are the possible problems, or how could I go about trouble shooting it?
  • With key off or ignition on needle is at full. With engine running needle moves clockwise to straight down position. Help. What is possible problem to check before i have to spend big dollars.
  • I have problems starting my 02 will start on the 3rd or 4th time...i thought it would be the starter but then they told me it might be the sparkplugs...i need help.i'm a girl and dont know that much about cars or trucks..If any one has an answer please let me know....
  • tidestertidester Posts: 10,110
    Starting problems can be caused by any number of things such as worn or defective spark plugs, ignition coils, drained battery, bad fuel pump, etc. Without knowing more about your specific problem, I'd go with the recommendation of the mechanic who diagnosed your TB.

    tidester, host
    SUVs and Smart Shopper
  • Hi all, I'll try and keep it simple.

    My 02 Chevy TrailBlazer is having some starting problems. It won't start, not even the radio or anything. I can't get the key out of the ignition either. My dad (used to own an automotive repair business) told me to tighten the positive cable on the battery, and that would fix it. Every time I tweak the cable the radio, clock, and other battery powered functions come on. At that point, I can get the key out if I want to. But if I turn the key to start after that, though it will sometimes start, more often than not, there's just a click and everything dies, and I'm back to square one. I had a problem like this before, about nine months ago. That turned out to be the actual battery, so we replaced the battery and the alternator to be safe. Certainly not the battery this time around. Anyone else had this problem before? Any ideas on what it is and/or how to fix it?

    Thanks a lot.
  • tidestertidester Posts: 10,110
    You have probably already done this but have you taken a good look at the battery cable to see whether it has a corrosion problem? That seems to be the common element here so you may want to try working that to remove any corrosion/oxidation on the contact surface.

    tidester, host
    SUVs and Smart Shopper
  • bc1739bc1739 Posts: 3
    I have an 02 TB. When I turn the key there is no sound at all. Has gas and is in park. All lights etc work and I took the battery to have it tested - it is fine with full crank amps. I have checked all terminal cables and all are tight with no corrosion. I tried to short the starter solinoid and it engages (but does not start). What am I missing? What about the starter relay?
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