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Chevrolet TrailBlazer Electrical Problems

104 messages,  Last post on Nov 12, 2009 at 1:36 PM

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What is this discussion about? Chevrolet TrailBlazer, Chevrolet TrailBlazer EXT, Electrical, SUV

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#81 of 104 2006 Chevrolet Trailblazer EXT LS problems by seah1018 Jun 02, 2009 (9:35 am)
I have a 2006 Chevy Trailblazer EXT LS with 65000 miles on it. The car has recently started acting up electrically, I think. When ever I turn on the air conditioner a set of warning lights comes on and the dash starts beeping. The lights that come on are the emergency brake light, the ABS, the Traction control and the 4 wheel drive train, the air conditioner will not blow except in the back. If I turn the a/c all the way to level 5 the warning lights will not come on but I can not put it any lower than 5. Yesterday I tried just having the rear air on rear control and the same thing happened, the lights came on and the beeping began. This has been happening off and on for a few weeks, never with the rear air control until yesterday. Does anyone have any suggestions? I tried unplugging the battery for 20 min to reset the fuse but the problem persists. Thanks
#82 of 104 Battery goes to 7.0 volts by ajscott19 Jun 22, 2009 (10:04 am)
I have a 2005 Trailblazer and about 9 months after I bought it I was driving at night and my volt meter dropped causing my dash lights, head lights and tail lights to flash like a strobe light. After it started it seemed that every other day it was doing it and would not stop until I pulled over and re started it. I took it to the dealer I bought it from and they replaced the altenator, a week after it was replaced the same problem occured so I brought it back and they couldn't find anything wrong with it. As soon as I left the dealer it starts doing it again. I decide to take it to another chevy service and they replace the altenator again (I told them that this was already done) A week after I pick it up it starts again so I take it back and they replace the ground fault wire. Again after I pick it up it happens and they tell me they can't duplicate the problem (yeah right) By this time I am so frustrated I write chevy and explain everything in which they set me up an appt. at a chevy dealer which is for tomorrow. We'll see how that goes, but I hate my trailblazer and will never buy one in the future. Has anyone else had this problem that they figured out what was causing it? Replies to this message: mrfryan (Jun 23, 2009 5:51 am) ajscott19 (Jun 30, 2009 6:09 am) bainms (Nov 03, 2009 8:05 am) tmirgliotta (Nov 04, 2009 3:45 pm)
#83 of 104 Re: Battery goes to 7.0 volts [ajscott19] by mrfryan Jun 23, 2009 (5:51 am)
Replying to: ajscott19 (Jun 22, 2009 10:04 am) It sounds like you have the same or similar problem as mine. Mine is the secondary air injection pump for the exhaust. My check engine light came on and it read the code for the secondary air system. I replaced the check valve and all was well for about a month. Then my check engine light came back on and my truck started randomly doing what you explained. The Volts would fluctuate back and forth and in the mean time the lights was dim like a strobe light. It would only do it for about a minute and then it'd stop. Turns out the after I replaced the check valve, the actual electronic pump went bad and was causing a drain on the system. They only want some $400 to replace it!!!!!!!!! The dealership said that it shouldn't affect performance of the car, it's just to disperse the pollutants in the exhaust. So instead of replacing the pump, I just pulled the relay for it and all is well (except my check engine light is always on).   I love my trailblazer... even with it's little quirk.   I hope that helps and you figure out what's wrong with yours! Replies to this message: ajscott19 (Jun 30, 2009 6:09 am)
#84 of 104 My Trailblazer is Possessed!! by ticadoo Jun 30, 2009 (6:00 am)
My 2003 TB EXT just turned 76000 miles. To look at it from the outside and inside, you would think it was a perfect truck! This has to be the strangest-acting vehicle I have ever had...and I am getting to I am afraid to trust it...but I am stuck...I lost my 2nd job and can't afford to replace it.   Last week I was coming home from 2 hrs away (family member in hospital)..on the interstate...and the windshield wipers came on by themselves...switch was off and it was NOT raining. This has now happened three times.   This past weekend, I stopped to get gas (another 2 hr trip), turned the engine off..key was out of ignition, I was pumping gas...kept hearing something..the rear A/C was on and blowing! So, in addition to putting over $100.00 worth of gas in my truck last week (16mpg)...I have all these strange things...   Two weeks ago I had to replace the water pump..$400.00. Now, when I start the truck and get ready to take off...it sounds like a jet plane trying to take off. I have people stop and look at me....I guess it sounds like I am getting ready to "speed" off...but I'm not... What could this be? Replies to this message: trailblazer1 (Jun 30, 2009 6:20 am) ticadoo (Jun 30, 2009 6:35 am) nutrinoman (Jun 30, 2009 8:09 am) ticadoo (Jun 30, 2009 8:26 am)
#85 of 104 Re: Battery goes to 7.0 volts [mrfryan] by ajscott19 Jun 30, 2009 (6:09 am)
Replying to: mrfryan (Jun 23, 2009 5:51 am) I took it back and the dealer said the truck was supposed to do that...yeah right! They could find nothing wrong with it, who know's I get the feeling that I will never get the issue fixed.
#86 of 104 Re: My Trailblazer is Possessed!! [ticadoo] by trailblazer1 Jun 30, 2009 (6:20 am)
Replying to: ticadoo (Jun 30, 2009 6:00 am) It's the dreaded fan clutch!   Check out all the past threads and you'll find that many of us have had to replace the engine fan clutch. And your right, it sounds like a jet engine.   Good Luck Texas   . Replies to this message: ticadoo (Jun 30, 2009 6:35 am)
#87 of 104 Re: My Trailblazer is Possessed!! [trailblazer1] by ticadoo Jun 30, 2009 (6:35 am)
Replying to: trailblazer1 (Jun 30, 2009 6:20 am) I've already replaced that too!
#88 of 104 Re: My Trailblazer is Possessed!! [ticadoo] by nutrinoman Jun 30, 2009 (8:09 am)
Replying to: ticadoo (Jun 30, 2009 6:00 am) The others are correct for the "jet plane" sound. I had it and it sounds like a harrier taking off. Your fan clutch has died. I replaced my own. If I remember correctly the clutch was somewhere between $150 and $200. You have to disconnect the transmission coolant lines and then remove the radiator to give you enough room to replace the clutch. With a friend helping it took us about 1.5 hours to replace it. Replies to this message: ticadoo (Jun 30, 2009 8:26 am)
#89 of 104 Re: My Trailblazer is Possessed!! [nutrinoman] by ticadoo Jun 30, 2009 (8:26 am)
Replying to: nutrinoman (Jun 30, 2009 8:09 am) How long are these supposed to last? I had mine replaced just over a year ago.
#90 of 104 03 Trailblazer can't get key out! by jspr363 Aug 09, 2009 (3:42 am)
Hi gang 1st time posting. The key will not turn to off position(where you can remove it) it stays in the aux position keeping dash lights on and running down battery overnight, everything else is ok. It all started when the shifting colum was accidentally moved to park while the car was rolling slowly ahead. The transmission seems to be fine goes into all gears and park no problem. What interlock should I look for that is holding that key from coming all the way home? thanks Jon

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