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Chevrolet TrailBlazer Electrical Problems

45 messages,  Last post on Aug 27, 2008 at 9:53 AM

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

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#6 of 45 Chevrolet Trailblazer Battery Replacement by cernst2 Nov 14, 2007 (12:34 pm)
I have a 2003 Trailblazer EXT that required a battery replacement today (Surprise, suprise, Gomer!) ... Now, the radio doesn't work, the interior lights won't come on and there are a couple other non-functioning electrical devices.   Is there a reset button or something that I missed? Replies to this message: tblazed (Nov 15, 2007 8:17 am)
#7 of 45 Re: Chevrolet Trailblazer Battery Replacement [cernst2] by tblazed Nov 15, 2007 (8:17 am)
Replying to: cernst2 (Nov 14, 2007 12:34 pm) Sounds like either the BCM got glitched during the battery change since it controls the things you mentioned, or maybe the 125 Amp "Mega Fuse" on the underhood fuse block got blown somehow since it supplies power to the interior and most of the accessories, maybe frrom someone hooking up jumper cables wrong? (Been known to happen before). I would check that big 125 A fuse, and if it's good (12 Volts on each end of the fuse) then try disconnectiing the battery for 35 minutes to reset everything, reconnect the battery and try again.
#8 of 45 Extended Warr... by blazerburn03 Nov 16, 2007 (12:54 pm)
Hi there does anyone have legal advise on how to get the previous owners to reinstate the extended warranty... I have a 2003 TB love it, but the engine light stays on, it went off but it keeps coming back on, and it has a vibration at 45 to about 60, I tried several things for the light but it keeps coming back on.. the previous owners told me that the light never came on while they drove it, and that they were not aware of the vibration while its so damm obvious.. I was doing the extended warr. transfer over to my name since it had almost 1 more year left on it, and I was going to take advantage of the extended warr to have the dealer find the problem... but the previous owner told me i could change the extended warr to my name w/out any problems... but to my dismay they canceled in Oct . I got the truck from them on the 18th of oct.and at that time they told me it was active and I could have transfered over. so does anyone know if I have any recourse againts the previous owners.. or am I out of luck... I called them, so now is just a waiting game to see if they will even call back, since I am financing the truck thrugh the credit union maybe they can do something about it?? since the light keeps coming on, or is it basically I am out of luck, I bought it as it was so I may be stuck with a lemon.....   any ideas or comments....... Replies to this message: matuner (Dec 14, 2007 7:28 pm)
#10 of 45 Computer nightmare by matuner Dec 14, 2007 (7:28 pm)
Replying to: blazerburn03 (Nov 16, 2007 12:54 pm) 2002 TrailBlazer. I had left my 4 ways on for about 20 minutes. Upon shutting them off my truck went dead. I had to boost it. it ran. The next day I had to boost it as well. It ran for 30 minutes then I went to drive away and I had 2 lights on, a engine light with an arrow pointing down and the transmission light. My truck idled at 1100rpm but when I gave it gas it would not accelerate. It goes into gear but does not move. No fuses have blown and all gauges read accordingly. What is wrong? Can I fix it by unpluging my battery for 35 minutes?
#11 of 45 04 tailgate module problems by meg8 Dec 21, 2007 (10:16 am)
My keyless entry and rear wiper stopped working. I stopped at the dealer and after hooking up to their computer they said my tailgate module was bad. Is this common to the trailblazers? I only have 38,000 miles, and this is only one of the MANY problems I have had with this vehicle. Any advice on the difficulty of repairing/replacing this item myself? Also, I haven't been able to find this part online. Anyone have a part # ? Thanks
#12 of 45 Power Problems by sabrefan Dec 27, 2007 (8:09 am)
I had a problem with the battery on x-mas night. I replaced the battery the next day and now notice something I haven't noticed before. When the truck is on and in park, with eth lights on and the heater running, it will loose RPMs and then rev itself up to avoid stalling. I understand why it's doing this, but never noticed it before. Is this common, or should the engine maintain itself better? Is my alternator defective?   Thanks Replies to this message: bigmarv (Jan 25, 2008 7:46 pm)
#13 of 45 Radio Lights by matt14 Dec 27, 2007 (6:55 pm)
The lights on about a quarter of my radio controls went out a while ago and now another quarter have joined them. Is this a fuse, bulb, wiring or what that causes this? Is there a simple way to get at the problem and correct this myself? The radio, cd, etc still functions fine, it's just a problem changing things at night. Any suggestions? Replies to this message: jnt (Jan 17, 2008 6:09 pm) erikheiker (Jan 19, 2008 1:31 am)
#14 of 45 2002 Trailblazer Seat Belt Light and Chime by cptbill911 Jan 11, 2008 (2:29 pm)
The seat belt light no longer illuminates when starting the vehicle and the chime no longer functions with the seat belt off. The chime still works with the key in the lock but not for the seat belt. Fuses seem okay and the maintenance manual is quite vague on what to do. Any suggestions? Replies to this message: erikheiker (Jan 19, 2008 1:33 am)
#15 of 45 2006 Trailblazer by gisele1 Jan 11, 2008 (8:00 pm)
I have a 2006 chevy trailblazer and I just picked it up from the garage, as they had to change the fuel sending unit in it because my gas gauge was not working, so on my way home from there all my gauges dropped down to zero and do not work anymore, I pulled over to stop and restart the vehicle thinking the computer didn't think properly upon starting and all was fine till I reached 50km/h and then my gauges dropped back down to zero, so again I pulled over to restart the vehicle and all is good till I reach 50km/h and everything stops working, I have no speedometer, gas, rpm, oil, temperature gauges at all. I went online and did a self diagnosis and it told me it could be the fuse is blown, but I wouldn't think the gauges would be okay for a bit then stop working if the fuse was blown, or it said it could be the Instrument Panel Voltage regulator is bad. Now they did also replace 2 fuel line retainers because as they took the tank off the lines broke. Hope you can help. Gisele

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