Three problems related to o2 sensor have been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.
When I first purchased this vehicle I thought I had a great SUV. Little did I know that within the first month of owning it did I make a huge mistake. I am a single mother of 2 kids. I checked out the crash ratings and they were great!! I liked everything about my tb. Looking back, after the 4th problem within that first month. I should have ran away screaming from it, as I do now daily. The lights flicker when you drive at night. The headlights constantly go out. The check gauges light is constantly coming on. The oil pressure gauge drops for no apparent reason. The tach goes crazy. The "bell" for the lights (when you have the keys out and the lights are still on, or when you have the keys in and the drivers door open) works when it wants to. The battery guage works when it feels like it. The gas guage hasn't had a problem lately. I am wondering. . . Doesn't all of that constitue as a safety problem?? I have had the lights looked at and am told there isn't anything that can be done. . Really?? I am going to have to have the guages looked at now and from what I see it will cost about $600-$800. Where other chevy vehicles have had this covered under a recall. There are many other problems I've had, the O2 sensor, temp guage, other lighing issues that I have taken care of but this is getting to be a bit much. I see many others have had this problem. It can't be from normal wear on the vehicle. Please do something about this before someones family really gets hurt, if they haven't already.
On November 26 2007 took my chevy Trailblazer 04 4 wheel dr. In for steering wheel shimmy. Could not duplicate. Also c. D. Changer will not eject cd's and low beams on headlights not working. Repaired headlights and c. D. Changer. Did not fix steering problem. On June 07 took in for major service with 33,000 miles. On Dec. 8 2008 took in for stalling when coming to a stop. Could not duplicate the problem. This is my main complaint, the stalling on Jan. . 10 2009 took in for erratic speedometer which was happening for about 3 months off and on. Rebuilt the speedometer. On June 11 2009 took car in for stalling, ses lamp comes on when driving and hvac fan does not blow on the #5 position. There is alot of grinding and whining when vehicle shifts to second gear. And turning at low speeds there is a whining coming from the front end. Removed and replaced 02 sensor. For the stalling they could not verify concern. Recommended throttle body DE-carb and injection system cleaning. For the #5 fan not working removed and replaced speed control resistor. Transmission they could not feel any unusual shifting. For the steering prob. Replaced power steering pump and power steering gear. Car still stalling on 6-19 -09. Took in. Did another decarb service and replace fuel filter. Still stalls. 7-01-09 when car starts there is a loud clutch fan noise like a jet taking off. Feels like the trans is overworking, veryloud not right. Fix,was fancontrol set im properly trouble code p0483 . Bulletin 05-06-02-004 reprogram pcm. Claim code1013b. July 8 took car for stalling issue July 9 took car for stalling issue July 10 took car for stalling issues no paper work for these 3 days they were trying to recreate the stalling issue. July 20 2009 in shop for 16 days for stalling issue they finally confirmed . Replaced pcm. They called in tech assistance case #10971267 he said to perform top engine cleaning. Outcome is cannot guarantee repairs at this time due to how random this prob occurs.
Back hatch and window will only open occasionally if I'm lucky. Tail lights went out once and I was able to get the hatch open to fix it. They are out again and I can't get the hatch to open now. I have been replacing head lamps about every 8 to 10 months. Head lights are now going off for no apparent reason while I'm driving at night. I can flip on the brights and then wait a few minutes and flip back to low beams, sometimes this works sometimes it doesn't. The dome lights will not come on and stay on after I turn it off. Half of the dash lights for the radio are out, sometimes they will come on if I tap them. The feature that lets you turn the vehicle off and the radio will continue to play and the windows will still roll down as long as you don't open the door, is not working. Both O2 sensors are out and have been for a long time. I purchased this SUV brand new from a chevy dealer. I have paid it off and kept up all of the general maintenance on it. When I took it in to get these issues fixed I was told it would be over $2500. 00 to fix and that did not include labor. This SUV is a lemon, if I was in a position to trade it in or buy a new one I would, and I would not be getting another chevy. I have never been notified of any recalls. I only found out about the electrical recalls on the turn signals and tail lights because a friend had heard about them and suggested a website to check. I'm calling the dealer today to see if I can get these issues taken care of. Another reason I will not be buying chevy again.