Chevy Trailblazer- No Brake Lights! It's an easy fix.. 

Thank you for this video! Mine was the passenger side circuit board. Thanks to you, the brake lights on my 2003 Chevy Trailblazer EXT now work again and I can pass inspection this week, which will allow us to go pick up my Mom across the state for Christmas so that she isn't alone. Not only was your video easy to follow, but you also took what can be a stressful situation for many people and made everything much better with your humor and overall likeable personality. This is one of the most valuable videos I have ever seen on RU-vid. Merry Christmas! EDIT- For anyone who can't find the piece of cloth to pull out your drivers side middle seat to find your fuse box, you may have a version without it and instead you will use the black plastic recline mechanism like you would on the passenger side seat.

Thank you a thousand times over. I got stopped after work like a day or two ago, cop was a real sweetheart, just told me I didn’t have ANY lights except the center brake light. Found out today that for me it’s both circuit boards & 5 of the 6 lights were affected. (cause my passenger REVERSE LIGHT WORKS)

Thank you again, I checked my lights this morning and both brake bulbs were lightly melted on the base. I had already checked the bulbs ( I thought) and saw no problem. After watching your video, I went back and found the problem immediately. I went to the parts house and picked up two new circuit boards for $16.00 each, now I have two working brake lights again. You saved me probably $150. or more, by being able to do it myself. I appreciate you taking time to help others !!

What a great dad. The world needs more like you

Dude!!!!!!! I don't know you and you don't know me..... BUT THIS HERE VIDEO SAVED ME SOME TIME AND A WHOLE LOT OF CASH. I couldn't figure out the problem. I was going to take my truck to an electrician. That was going to be sooooooooooo expensive. But you saved me. Thank God for you sir!!!!!! Have a blessed day.

This procedure does the job! My 2002 Trailblazer had these symptoms, and it turned out that a body shop had replaced the taillight sockets and circuit board assembly with a non-OEM part that failed. But there's more! A few months earlier, the cruise control had stopped working, as had the "GM Oil Life Sensor" that is reset by depressing the brake pedal three times after an oil change. Replacing these boards fixed all three of the problems - brake lights returned, cruise control returned, and oil life sensor reset confirmed. Three problems fixed for $30!!!

Just picked up a '09 Envoy SLT for work car. I really appreciate your "quick Fixes". Also enjoy your narration. God Bless.

Thanks for being conversational and affable and saying things like, "pushy thing" and "get the screw you dropped on the ground." This matches my experience and skill level very well. I call pliers "squeezers" so we would probably get along. this was actually very helpful

Fixed car problem this morning. 2004 Trailblazer both fuses were good but on circuit board both top lights (which you explained were brake lights) were fry’d causing bad bulbs and I guess damaging both boards. Got replacement boards, 1 from Autozone and 1 from Oreilly like you said who sold them. Everything works great now. Thanks Again for all of your help and well explained video.

Same problem on my 2002 Trailblazer. Watched and followed your instructions. It was my bulbs. Thanks 👍👍👍

Love it man. Sounds like a true mechanic! " Hardest part is remembering were you put the screws."😂😂

Thanks just bought a trailblazer and the brake lights wasnt working and thanks to you i fixed it in 2 minutes.

Broooooo! You rock. My sis and I were dying. You're so hilarious. Got that tail light changed too.

This is the exact issue I have currently!! So happy I found this tutorial from ya , I'm at work now but can't wait to get home today and try this !!

you help me tremendously. my brake lights worked but not my running light. it was in the same fuse box. thanks for the help with that fuse box under the seat

I have same problem with 2009 Chevy Equinox, alas, this isn't the solution for me as mine doesn't have the circuit boards on each side. Woe is me, what to do? I like this guy's sense of humor and delivery. By having prepped for video it was concise and to the point unlike some others in which we have to wait actual complete (boring) time. Good job, Cheap Geek; thank you.

Thanks for taking the time to make this video. Even though all of my fuses were fine, and my bulbs were not blown, both tail light assemblies had a tint of brown scorching around the brake light sockets. I replaced both bulbs and my tail lights work, but I went ahead and ordered two new tail light assemblies (part number 16532713 Tail Lamp Circuit Board) and spare bulbs.

Amazing video! Very professional 🎉 although I tried all of these things and no luck. All of my bulbs are working, my only issue is that when I hit the brakes I get no brakelights. Going to have to check the brake pedal button next.

Hey thanks for the video! Helped a lot! This works on the 2002 Trailblazer as well if anyone is wondering!

Awesome. I checked the fuse both box all good and replace the bulbs because it was old but never thought about the board itself. Will give it a try tomorrow.

A polite and considerate guy in another lane rolled his window down and told me my left brake light was not working. First I will verify such, and second, thank you for this video, and third, go get a new bulb set. This way i can have a few spares.

This saved me a BUNCH of mentally induced ball ache, much thanks! I guess I will be buying a new bulb housing this week..

helped so much. checked all fuses in both boxes, and low and behold it was a burnt out bulb in each side. thx so much

nice video. i spent most of the day switching bulbs around before watching this. come to find out it was a blown fuse. I now have both brake lights, but only one tail light. Thanks for getting me this far.i can at least drive it in the daytime now.

One of the best how to videos

Thank you. I subbed just because of this video. My circuit boards blew was lost after the fuses were fine. I appreciate you taking the time to make and post this video.

Thanks! Very direct and TO THE POINT...the way these "instructional" videos ought to be. Saved me a LOT of money in fixing my brake lights. (Enjoyed the humor, as well!)

Thank you sir!!! You could not have explained, and demonstrated, it better. I now have my brake lights back. 2006 Envoy Denali

Thank you for this video. Identifying which light is the break light was very helpful. My chevy eats tail lights. I replace them probably three times a year. Maybe its the circuit board.

Thank you very much! With your excellent guidance I was able to diagnose and repair my brake light. I’m pretty impressed with myself but could not have done it without your video!

Your lovely lady is very lucky! I just had an oil change for my 2004, and discovered it is having this exact problem. Very very helpful... Thank you.👍

Thanks for posting this video! Recently had the exact same problem on my '05 Trailblazer with 156,000 miles. The top bulb on both rear lights was melted to the electrical panel and left/right rear fuses were blown. Purchased two new GM panels and installed die electric grease in all connections. Hoping the grease will help prevent the plastic bulb base from melting in the future. It's been two weeks, and all is working well.

EXCELLENT VIDEO. I had the fuse/circuit board combo issue as well. Since circuit board was old (probably original) i replaced it first without knowing it was the issue. It did have the melty thing going on so I figured something was jacked up anyway. ..Then replaced the fuee and we're back in business. Many thanks. Saved $$$ by not taking it in to service station.

Thanks for the no brake light fix. I traced it all the way back to the circuit ( and I could tell someone else had all ready done the same ) but I found you and the fix on utube. Thank You!

Thank you so much! Tried all thecsteps..now i am happy braking and safe again!

Great video,because you took it from AtoZ...you provided ALL INFORMATION needed to know and kept it simple to boot...

I just bought a 2002. It has the same light assembly. Only one side is out but this might work. As soon as it warms up I will try it. Either way, your video was awesome. informative and entertaining. Thanks for the info and laughs.

Great help!! Thought it was a blown circuit board, but found out it was the fuse. Thanks so much for the great video!!

Proud lady that posted is Tkomomma, oops, posted on sons computer--The one talented Kid Clever!!!

So thankful for your video! It saved me a trip to a shop and most likely getting ripped off. I was able to fix it myself!!

Thank you!!! My lights were out on the sides as well and so was the cruise control, but they’re both fixed now thanks to you! 😀😀

Incredibly helpful....I wish more RU-vid videos were like this one....

Thank you! You saved us a lot of time, frustration, and money with our 2005 Trailblazer EXT. 2 new circuit boards fixed everything right up. :)

Thanks for the great video, my brake lights when out and i was having trouble getting them to come back on. Turns out it's that 15 amp fuse for me. But i will be looking for replacement circuits very soon.

I have a 2002 with this exact problem. Thanks for the video, now I have something else to look at, after checking fuses and bulbs.

You are awesome! My 07 blazer brake lights haven’t worked since I bought it from an auction. I asked a few male mechanics I know if they could tell me what I needed to do to fix this but all said it was probably a fuse in one of the three spots. Tonight I found your video n watched, did what you said and it wasn’t fuses. It was the brake light circuit board in mine also. Thanks again. This video was simple to follow n I did by myself. I appreciate that a lot.

Thanks for this very entertaining, yet informative video!! You not only helped me save time and money at an auto shop, you also gave me a good laugh! Thanks again!!

Turns out this is the exact setup for my Isuzu Ascender. Thanks!

Great vid. Straight to it easy to understand walkthrough. On top of that pretty entertaining

My man you are a godsend thank you so much and my 2002 Trailblazer also thank you!!😀

Thanks man, had to diagnose a lady friend's trail blazer last night off the first video I saw👍

I swear this car will make you a mechanic with how many things go wrong with it..

Thanks for sharing this video. I'm going to change everything out. The Circuit Board, The Bulbs & The Fuses. This is an easy fix I can do myself. My Trailblazer is an 02. Again THANK You

Many Thanks. I'm working 7 day work weeks and those darn brake lights. I had replaced bulbs twice and checked fuse under hood. Leave it to a automaker to put another box under the back seat. That was it. You may have saved my life.

Should you Stay or Should you Go update? would love to hear more as I've been feeling a lot like yourself thanks

I have a 2004 with the same issues. I watched this video and found that #12 fuse in the back and the passenger side circuit board bad. Replaced both and it's great! Thanks!

Thanks for the vid!. Nothing like checking the center bulbs, no brake signal 12v. Until I saw your vid, the brake bulbs were on the top! WOW, I had the wife switching cars till I could find a schematic!!!, Oh, two bad bulbs!

I had to replace all 3 other things before I found your video. Thank you!

awesome! I have a 2005 trailblazer and your video saved the day and probably a few hundred bucks. same exact problem. thanks so much!

You are awesome for posting this!!! Thank you so much! Mine was the circuit board too. Since your video has had 46,000 views, this is obviously a common problem. You would think it would warrant a recall.

Thanx for the informative video. I am going to try finding out the problem on my Q7 now...

Thank you so much. You are a life and money saver. It was our tail light circuit board.

Same problem on my 2000 Tahoe. No brake lights but the roof brake light works. Turns and 4 ways work so the bulbs are good. Fuses ok. My problem was a loose 4 way switch on the steering column. Held to the left with 4 ways off the brakes lights worked. I stuffed a piece of cardboard folded to tighten that switch for now until I can take the collar off the column to check out the connections better on the 4 way. I hope this helps before you spend a fortune on a new brake peddle switch and change it out because that is NOT a fun job. I did that on a 99 Yukon and it was very frustrating due to its location,, requiring 2 elbows and 4 knuckles on each finger. Hold that 4 way switch to either side with the switch off and press the brake peddle to check for brake lights. Apparently that circuit is shared.

Hooray! Replaced both circuit boards and brake lights work again. Thank you all but especially CheapGeek! also BTW, my mechanic replaced my exhaust manifold last year after it cracked for $600. Come to find out there is an extension to the warranty for this. I brought my work receipt to the dealer and GM is going to reimburse my $600. If you run into that problem, see below: #11150: Special Coverage Adjustment-Exhaust Manifold Warranty Extension - (Jul 25, 2011) Subject: 11150 - Special Coverage Adjustment - Exhaust Manifold Warranty Extension Models: 2008-2009 Chevrolet TrailBlazer 2008-2009 GMC Envoy Equipped with 4.2L Engine (LL8) -------------------------------------------------------------------------------- Condition Some 2008-2009 model year Chevrolet TrailBlazer and GMC Envoy vehicles equipped with a 4.2L engine (LL8), may have a condition in which, over time, may develop a crack in the exhaust manifold. If this were to occur, it could result in increased exhaust noise. Special Coverage Adjustment This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to replace the exhaust manifold if it is determined to be cracked. The repairs will be made at no charge to the customer. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after July 26, 2011, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to July 26, 2011, must be submitted to the Service Contract provider. Vehicles Involved Involved are certain 2008-2009 model year Chevrolet TrailBlazer and GMC Envoy vehicles equipped with a 4.2L engine (LL8). Important: Dealers are to confirm vehicle eligibility prior to beginning repairs by using the Applicable Warranties section in the Global Warranty Management system.

Thank you I had bo idea about the second fuse box very helpful video

Such a awesome video did a really good job on step by step thanks.

Same issue on 2002 Trailblazer. I found if I twist the circuit board from top to bottom after removal from the tail light it works as I twist then quits when I release. Replaced circuit board and issue solved.

Awesome video, very helpful...I just hope this information can be applied to my beater of a 1999 Ford F-250 Super Duty. I have tried everything (to my standards and everything else except these things). I can actually feel my manhood shrinking right now for not being able to resolve it. Thanks for this, RU-vid's DIY videos are super, just super!

Fantastic!!!! You really saved the day! Looking for more chevy videos. You did an excellent job, with great pointers and explanation. Proud lady that was allowed to repair my own vehicle...Thank you, thank you again!

Yo this guy is great. Love the narration. Lol

Thanks for the educational video, seriously! OK! So I checked all the fuses, relays, even replaced the brake light switch, and NOTHING! My third brake light is not working so I have no frame or point of reference, where do I go from there? Thanks in advance!

Thank you for making this video...

Just got a 2006 Trailblazer EXT with a similar problem. When I pulled the plug out of the tail light circuit board, three of the pins had rusted so badly they snapped clean off! Wound up having to cut the original plug and solder in a replacement, what a pain...

My brake lights went out after I was testing out some nice LED bulbs. A burnt fuse seemed unlikely since LEDs use 10% or less of the power of a non LED. Still, nothing is easier to try than a fuse, but everything that made sense to me in the panels, was fine. So I posted a paniced forum post, then started googling, and found this video. Fuse #34 WAS burned out! I did the same exact thing, I threw a 20A in there, and so far it hasn't gone back out again so I guess I'm good.

Thank you for this! Made life much easier for me this morning.

Thank you, Thank you, Thank you. Problem solved. You the best.

Damn good video...it helped to fix my 08 Trail Blazer...Same problem with mine..

You’re great. Now I know how to do things to my 08 trailblazer and know where the fuses are. Save me money. Thank you!

well, so far on my 07, fuses OK ... now, to get the bottom 2 screws out of the circuit board/bulb holder - screw heads are badly corroded. I think a couple of drops of Hoppe's #9 gunpowder solvent should do the trick (Hoppe's - by FAR, the best rust penetrant that I have ever found - I keep a bottle in my tool box!)

Thanks CheepGeek, you helped me resolve the problem!!

Thank you! My right rear brake light does not work but the light bulb is fine as it lights up when I use my remote to lock the vehicle.

I really appreciate your video it helped me so much!!😊

Thanks it was the circuit board. Had it fixed less than ten minutes. Great video.

God. Bless. YOU! now my trailblazer ss can pass the inspection 😎

THANKS BRO YOU SAVED ME A LOT OF BS!!!

Man thank you a lot this video saved me in the middle of the road thanks man

I have the same problem, but I'm going to have to replace that whole little board in the back that has all the bulbs. Could you please tell me the correct name of that part so that I can go buy it? And THANK YOU for this detailed video, I just saved a bunch of money in not calling a mechanic!

This video is awesome! Life saver! Thanks!!!

2 things... 1.) My 08 chevy trailblazer did NOT use philips screws. They were those specialty "torx" I think they are called. Why... I can not imagine. That would be good info to have BEFORE starting on this. 2.) While I did not have any blown fuses, I found my brake light socket melted is EXACTLY the same way as yours. Maybe this should be a recall?

Yay! I can't wait to try this!

Thank you

I know this is an old video and I know you might not see this but if both are out and it’s not fuses or bulbs on either is it just a wiring problem? Or should I replace both circuit boards?

Thank you for this great tutorial! So simple even a girl can do it. Lol Circuit board replaced as well as a blown bulb. All in under an hour! Thanks!

You’re amazing!!!!! Thank you for the info!

im having this same issue with my 04 chevy venture but i cant find a blown fuse but the bulbs keep getting blown out should i change the circut botd

What's the purpose of the middle bulb I saw a Trailblazer tonight and it had the top and middle lights lit up

Is there something here I'm missing the right brake lights didn't work so first I got new bulbs and put them in and they still didn't work then I checked the fuses in both boxes and neither of them were blown but when I took out the fuse from the box in the back and put it back in now both of my break lights don't work only the ones on the top

thank you sir because of this video I fix my drivers side rear lights and also the license plate was not working and this video helps me a lot it was just a simple 10A fuse I also what I did is use a multimeter to check continuity staring from the top of the fuse but it it was visible easy to spot thank you again :D

I had the same problem,94 chevy Silverado.same bulbs,same cirut board, only my problem was a blowed bulb on the front turn signal

I have a 2006 trailblazer and i checked both fuses..both are good..my break lights is the middle bulb on the circuit board and when i put on my hazards the middle(break) bulbs are activated..can it still be my circuit boards..thanks and i know im a couple of years late in commenting and youre probably stop making videos on you tube as your driving your Mazzerati in the autobon in Germany.idk..hopefully you will respond cause i need to get out of the doghouse lol..thanks