Question about 2003 Chevrolet TrailBlazer

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2003 Trailblazer - taillight keeps burning out

Have a 03 Trailblazer.No manual. passenger side taillight had moisture in it. dried it out, replaced bulbs. still doesn't work. would like to find the fuse. anyway to get fuse box locations/schematics without buying a new manual?

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Under rear seat and under the hood just behind the battery box.

Posted on May 16, 2009

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Yes there are 2 places under dash or sides of dash and in the engine compartment

Posted on Jan 25, 2009

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2004 Trailblazer lower taillights not working upper work fine.


With the condition of the screws you should check to make sure there is a good connection to the lower bulbs for both power and ground.

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it could be a coincidence and you have two bad bulbs. those bulbs function independently of each other so I would check the bulbs and the sockets make sure they aren't rusted or corroded and sometimes they can get leaks and will fill up with water..look for signs of moisture. If your bulbs are good and you continue to experience the problem.. please let me know and I can give you some other things to check.

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Why are the inside panel light and park and stop,backup lights are out


Have you been driving in heavy rain lately? When I lived in Florida, my '03 PT would regularly have water get inside the rear taillights and shatter the hot bulbs. If this is happening to you, residual water could also be causing an electrical short. While this may not be the cause of your particular short, it only takes a few minutes to remove both rear taillights to examine the bulbs inside. Each of the rear taillight housings are held on by a single screw and a couple of clips. Use a standard screwdriver to remove the screw and make certain not to use excessive force on the clips. If the bulbs are indeed shattered, carefully remove the glass and dry everything completely before installing replacements. I eventually upgraded to LED bulbs because they do not get hot enough to shatter when water splashes on them. LEDs are more expensive, but cheaper than a ticket.

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03 Chevy Trailblazer left rear taillight will not work. Brake light, back up light & turn signal all work. Right rear all work. Replaced bulbs, switched sides, still nothing.


There was a recall on this, see your local Chevrolet dealer.... Recall Date: NOV 01, 2004 Model Affected: 2003 Chevrolet Trailblazer Summary: ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE. Consequences: AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH. Remedy: DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR GMC AT 1-866-996-9463. Potential Units Affected: 871473 Notes: GENERAL MOTORS CORP. Read more: http://www.motortrend.com/cars/2003/chevrolet/trailblazer/recalls/#ixzz2jWJ1eDyR

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There is a small electric motor inside the actuator assembly that has probably "burned out". Same problem with my 03 pilot. The remote would not lock the other doors or arm the security system unless you physically locked the driver's side door. Eventually my passenger side burned out as well. Fixed it myself pretty easily. Cheap fix too. works like new now. http://www.ebay.com/itm/120935451126?var=420082237231&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

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Try searching www.car-parts.com for used parts, or the dealer ($$$). You can also check ebay.

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1 Answer

Headlight swich for 03 chevy trailblazer?


yes sounds like the switch went bad or haves a short in the wiring

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I own a 97 LS as well and I was going through passenger taillight bulbs too. I found that the water that drained in the channel around the trunk was deteriorating the connectors on the taillight. I replaced the circuit board (black plastic piece you plug the lights into) and also used a can of Electical Connector Cleaner on both the plug to the circuit board and the socket the lights plug into. Lights have lasted now 5 months without burning out.

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