help plz..Brake lights do not work now
Question:
2001 Trail Blazer My brake lights have quit working and was wondering if anyone can help me get them to work again. I have checked the fuse and the blubs. Thanks for any replies
Response:
I don’t know if this is the case with yours, but it may be: The brake lights in my truck are also my rear turn signals. So if I put my left turn signal on, that’s my left brake light. The same goes for the right. So if you put your left or right turn signal on (don’t forget to put the key to accessory), do the lights flash? Try the 4-way/hazzard lights for the same reason. I had a problem with my turn signals (front&back), parking lights, 4-way/hazzard, and stop lights all were blowing their fuses — but not the bulbs. It ended up being the trailer light harness was corroded and shorted out. Just some odd ideas — it’s a newer truck so I would be suprised if it was corrosion — unless you were playing with something 
-Joe
– Hide quoted text — Show quoted text -> 2001 Trail Blazer > My brake lights have quit working and was wondering if anyone can help > me get them to work again. > I have checked the fuse and the blubs. > Thanks for any replies
Response:
>2001 Trail Blazer >My brake lights have quit working and was wondering if anyone can help >me get them to work again. >I have checked the fuse and the blubs. >Thanks for any replies
Got under 36000 miles on it? If so, take it to the dealer and let them change the boards that the bulbs mount in. We’ve seen quite a bit of problem with these. — Old Crow ‘82 FLTC 92" Shovel ‘Pearl’ TOMKAT, SENS, BS#133, DOF#51, MAMBM ASE Certified Master Auto Tech + L1 Chevy Certified Master Tech
Response:
Sorry all , here some more info Also the turn signals work and the Haz flashers work. When stepping on the brakes the light on top the truck above the back windshield works as it should.
Response:
The boards you are talking about are they in the taillight assembly, called the service center and had to set an appointment because they have never heard of this before and may need time to figure it out. No, over 36000 miles. – Hide quoted text — Show quoted text ->2001 Trail Blazer >My brake lights have quit working and was wondering if anyone can help >me get them to work again. >I have checked the fuse and the blubs. >Thanks for any replies >Got under 36000 miles on it? If so, take it to the dealer and let >them change the boards that the bulbs mount in. We’ve seen quite a >bit of problem with these.
Response:
sounds like a problem ive heard of with the turn signal/multifunction switch. Not a cheap proposition unfortunately
Response:
>The boards you are talking about are they in the taillight assembly, >called the service center and had to set an appointment because they >have never heard of this before and may need time to figure it out.
Yes. After you remove the tail light from the truck, you have to unscrew the board from the back fo the tail light. It has the bulbs pushed into it. I don’t know why, but apparently the contacts are loosing tension and creating bad connections. The new ones look the same, but are supposed to be a new design. Here’s a copy of the bullitin: Document ID# 1341275 Info – Tail Lamp Circuit Board Now Available for Service Use #03-08-42-006 – (06/05/2003) Tail Lamp Circuit Board Now Available For Service Use 2002-2003 Chevrolet TrailBlazer, TrailBlazer EXT 2002-2003 GMC Envoy, Envoy XL 2002-2003 Oldsmobile Bravada The tail lamp circuit board is now available for service use. Previously, the entire tail lamp assembly had to be replaced if the tail lamp circuit board needed replacement. If normal diagnosis of a vehicle leads to a failed tail lamp bulb, inspect the bulb socket to ensure proper fit of the bulb into the socket. If the bulb is found to be loose, or if the circuit board has failed, it is now possible to obtain just the tail lamp circuit board from GMSPO. Previously, the only way to replace the tail lamp bulb circuit board was to order the entire rear tail lamp assembly. The preferred tail lamp bulb to use is now supplied by Sylvania, P/N 12450108. Please note that the tail lamp bulb may have been provided by various suppliers in the past. Technicians are to replace the tail lamp circuit board using the following procedure: Remove the tail lamp assembly from the vehicle. Refer to the Tail Lamp Replacement procedure in SI (Document ID #730408). Remove the tail lamp circuit board from the tail lamp assembly. Inspect for loose tail lamp bulbs in the tail lamp circuit board. Replace the tail lamp bulb and the tail lamp circuit board if necessary. Refer to the Tail Lamp Bulb Replacement procedure in SI (Document ID #743430). Install the tail lamp circuit board. Refer to the Tail Lamp Bulb Replacement procedure in SI (Document ID #743430). Install the tail lamp assembly. Refer to the Tail Lamp Replacement procedure in SI (Document ID #730408). Verify the operation of the tail lamps. Parts Information Part Number Description Qty 16525938 Board, Tail Lamp Circuit-Chevrolet 1 16525964 Board, Tail Lamp Circuit-GMC 1 16525952 Board, Tail Lamp Circuit-Oldsmobile 1 12450108 Bulb-3157 1 — Old Crow ‘82 FLTC 92" Shovel ‘Pearl’ TOMKAT, SENS, BS#133, DOF#51, MAMBM ASE Certified Master Auto Tech + L1 Chevy Certified Master Tech
Response:
Old Crow There is no board on this 2001 Trail Blazer just sockets where the blubs fix into. The 2001 TB is like the old Blazer befroe the body change maybe that is the problem – Hide quoted text — Show quoted text ->The boards you are talking about are they in the taillight assembly, >called the service center and had to set an appointment because they >have never heard of this before and may need time to figure it out. >Yes. After you remove the tail light from the truck, you have to >unscrew the board from the back fo the tail light. It has the bulbs >pushed into it. >I don’t know why, but apparently the contacts are loosing tension and >creating bad connections. The new ones look the same, but are supposed >to be a new design. >Here’s a copy of the bullitin: > Document ID# 1341275 >Info – Tail Lamp Circuit Board Now Available for Service Use >#03-08-42-006 – (06/05/2003) >Tail Lamp Circuit Board Now Available For Service Use >2002-2003 Chevrolet TrailBlazer, TrailBlazer EXT >2002-2003 GMC Envoy, Envoy XL >2002-2003 Oldsmobile Bravada >The tail lamp circuit board is now available for service use. >Previously, the entire tail lamp assembly had to be replaced if the >tail lamp circuit board needed replacement. >If normal diagnosis of a vehicle leads to a failed tail lamp bulb, >inspect the bulb socket to ensure proper fit of the bulb into the >socket. If the bulb is found to be loose, or if the circuit board has >failed, it is now possible to obtain just the tail lamp circuit board >from GMSPO. >Previously, the only way to replace the tail lamp bulb circuit board >was to order the entire rear tail lamp assembly. The preferred tail >lamp bulb to use is now supplied by Sylvania, P/N 12450108. Please >note that the tail lamp bulb may have been provided by various >suppliers in the past. Technicians are to replace the tail lamp >circuit board using the following procedure: >Remove the tail lamp assembly from the vehicle. Refer to the Tail Lamp >Replacement procedure in SI (Document ID #730408). >Remove the tail lamp circuit board from the tail lamp assembly. >Inspect for loose tail lamp bulbs in the tail lamp circuit board. >Replace the tail lamp bulb and the tail lamp circuit board if >necessary. Refer to the Tail Lamp Bulb Replacement procedure in SI >(Document ID #743430). >Install the tail lamp circuit board. Refer to the Tail Lamp Bulb >Replacement procedure in SI (Document ID #743430). >Install the tail lamp assembly. Refer to the Tail Lamp Replacement >procedure in SI (Document ID #730408). >Verify the operation of the tail lamps. >Parts Information >Part Number > Description > Qty >16525938 > Board, Tail Lamp Circuit-Chevrolet > 1 >16525964 > Board, Tail Lamp Circuit-GMC > 1 >16525952 > Board, Tail Lamp Circuit-Oldsmobile > 1 >12450108 > Bulb-3157 > 1
Response:
Also check your Hitch and make sure that the problems doesn’t have something to do with it. Could be a short in plug or something like that.
– Hide quoted text — Show quoted text -> Old Crow > There is no board on this 2001 Trail Blazer just sockets where the > blubs fix into. > The 2001 TB is like the old Blazer befroe the body change maybe that > is the problem >>The boards you are talking about are they in the taillight assembly, >>called the service center and had to set an appointment because they >>have never heard of this before and may need time to figure it out. >Yes. After you remove the tail light from the truck, you have to >unscrew the board from the back fo the tail light. It has the bulbs >pushed into it. >I don’t know why, but apparently the contacts are loosing tension and >creating bad connections. The new ones look the same, but are supposed >to be a new design. >Here’s a copy of the bullitin: > Document ID# 1341275 —– >Info – Tail Lamp Circuit Board Now Available for Service Use >#03-08-42-006 – (06/05/2003) >Tail Lamp Circuit Board Now Available For Service Use >2002-2003 Chevrolet TrailBlazer, TrailBlazer EXT >2002-2003 GMC Envoy, Envoy XL >2002-2003 Oldsmobile Bravada >The tail lamp circuit board is now available for service use. >Previously, the entire tail lamp assembly had to be replaced if the >tail lamp circuit board needed replacement. >If normal diagnosis of a vehicle leads to a failed tail lamp bulb, >inspect the bulb socket to ensure proper fit of the bulb into the >socket. If the bulb is found to be loose, or if the circuit board has >failed, it is now possible to obtain just the tail lamp circuit board >from GMSPO. >Previously, the only way to replace the tail lamp bulb circuit board >was to order the entire rear tail lamp assembly. The preferred tail >lamp bulb to use is now supplied by Sylvania, P/N 12450108. Please >note that the tail lamp bulb may have been provided by various >suppliers in the past. Technicians are to replace the tail lamp >circuit board using the following procedure: >Remove the tail lamp assembly from the vehicle. Refer to the Tail Lamp >Replacement procedure in SI (Document ID #730408). >Remove the tail lamp circuit board from the tail lamp assembly. >Inspect for loose tail lamp bulbs in the tail lamp circuit board. >Replace the tail lamp bulb and the tail lamp circuit board if >necessary. Refer to the Tail Lamp Bulb Replacement procedure in SI >(Document ID #743430). >Install the tail lamp circuit board. Refer to the Tail Lamp Bulb >Replacement procedure in SI (Document ID #743430). >Install the tail lamp assembly. Refer to the Tail Lamp Replacement >procedure in SI (Document ID #730408). >Verify the operation of the tail lamps. >Parts Information >Part Number > Description > Qty >16525938 > Board, Tail Lamp Circuit-Chevrolet > 1 >16525964 > Board, Tail Lamp Circuit-GMC > 1 >16525952 > Board, Tail Lamp Circuit-Oldsmobile > 1 >12450108 > Bulb-3157 > 1
Response:
probably the big fuse for the stop lamps, I think it was hidden in glove box on the S10 blazers and underhood for C/K trucks
– Hide quoted text — Show quoted text -> 2001 Trail Blazer > My brake lights have quit working and was wondering if anyone can help > me get them to work again. > I have checked the fuse and the blubs. > Thanks for any replies
Response:
I have the same problem. If you find a fix please let me know. thanks
