Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
sorry for the delay.............Please post Model of Silverado & if Automatic or 4x4Greetings...... “Hi, I’m Don (aka MOLurch) and I look forward to helping you!”.IF you have Voltage + on "both sides" of the Fuse, then test the ORANGE wire at the Brake Switch under the dash with Key ONIF there is Voltage +Test the WHITE wire at the Brake Switch with Pedal pushed downLet me know what you find
.IF you need more information, please ask "prior" to Rating..Please do the right thing and leave a rating, using the rating system, so I may be credited for this Q&A..NOTE: Do NOT Rate on how much TIME you waited, because I am not on 24 / 7 and I answer as soon as I see the question.The question will still remain open for follow up questions if needed..If for any reason, you can't rate my answer OKAY, GOOD, or EXCELLENT today.Please reply and let me know why, so I can help more/better..Rating is very Important to our Service.
please let me know
Please post Model of Silverado & if Automatic or 4x4
The plug you show in picture is:Brake/Clutch Harness To Beacon Harness (With RPO Code 5G4/TRW).
The wires I need checked is plugged into the Brake Pedal Switch which is mounted to the Brake Pedal ArmIt is a "6" PIN Connector
thanks for the added info
which ORANGE wire are you referring to?the one in your picture or at the Brake Switch?Which Fuse did you check?Is there Voltage + on "both sides" of Fuse?
you posted that there is "power at fuse".........?Is there Voltage on "both sides of Fuse" & is it Fuse "STOP LP" in the under Hood Fuse Box?IF so, & there is Voltage + on "both sides of Fuse, then you have a break from the Fuse Box to the Brake Pedal Switch
Using a long piece of wire:
Connect one end of a piece of wire to Fuse "STOP LP"Connect the other end of the piece of wire to the ORANGE wire at the Brake Switch Plugdoes brake lights work?
thanks......I know about graduating this week....2 more girls to go.........Let me know what you find
Did you need more info?Please respond or Rate my answer
was this at the "6" PIN Connector on the Brake Pedal?Does the 3rd Brake Light work?
sorry I will opt out, as I do not believe we are communicatingplease do not respond to this, as it will lock questionIF someone else has more info, they will post here
Hi there. Different expert here.
System voltage at the STOP LP fuse, but not at the Orange wire on the stop lamp switch connector, indicates an open circuit. To test, temporarily run a fused jumper in place of the Orange wire from the fuse to the stop lamp connector. If stop lamps work, trace and repair open circuit between stop lamp switch connector and underhood fuse box - as an option, and since this is a dedicated circuit for the stop lamps, you could also run a new wire from the fuse box to the stop lamp switch to replace the existing circuit running through the Orange wire.
Please let me know if you have any other questions.
I'm usually online weekdays from 2 to 8PM EST. Look forward to hearing from you then.
I don't have a problem with the delay, but I do with you doing things I didn't recommend doing. Please follow the instructions as I previously posted:
"To test, temporarily run a fused jumper in place of the Orange wire from the fuse to the stop lamp connector. If stop lamps work, trace and repair open circuit between stop lamp switch connector and underhood fuse box - as an option, and since this is a dedicated circuit for the stop lamps, you could also run a new wire from the fuse box to the stop lamp switch to replace the existing circuit running through the Orange wire."
I'd understand if you want to do things your own way instead of following my advice, but, if that's how you want to procedd, then I wouldn't be able to help you. Please let me know if you have any questions.
OK. The no-stop lamp issue is mostly caused by bad connections. The next place that you should check is at the junction block for the rear lamps located on the left frame rail near the rear of the vehicle.
Look at the attached diagram and you will see the connector legend next to the highlighted junction block. With brakes applied, you'll be checking power coming in and out of the junction block (Lt Blue wire in and out)
Please let me know what you find.
According to the diagram there should be three Lt Blue wires; one bringing power to Blue connector C1 terminal 8; another Lt Blue wire carrying power from Gray connector C2 terminal 7 to the Left Stop Lamp; and yet another Lt Blue wire carrying power from Black connector C4 terminal 7 to the Right Stop Lamp.
If the junction block is bad, there'll be power only coming in to the Blue connector.
OK. Please remember that I'm online weekdays from 2 to 8PM EST.
OK. The wire may have a different color, but I doubt it (look at the attached diagram). Check for power at the wire going to the Blue connector terminal 8. If there is power there, the junction block is bad and needs to be replaced.
I have to take my wife to the airport. I'll be back this afternoon to check on your progress.
I don't understand; how can there be no power to any terminal on the Blue connector, yet the tail lamps work when you plug it in?
Also, that connector in the picture looks to be dirty or contaminated. Did you backprobe the wires to see if there was power at any of them?
Lastly, I uploaded a diagram for you showing the Orange wire feeding power to the STOP LP fuse; then a Light Blue wire going from the fuse box to terminal 8 of that Blue connector you took a picture of. Did you check that Light Blue wire for power?
Not a problem. Please don't reply until another expert responds or the site will cycle this request back to me.