Brakelights
06-10-2016, 06:22 PM
#1
Thread Starter
Join Date: 06-10-2016
Location: Marion,Indiana
Posts: 2
Brakelights
I am having a problem with my brake lights. They come on as I am driving and sometimes they go off and sometimes they don't. when this happens, my cruise control doesn't work because the system thinks the brakes are on. When I step on my brakes while this is happening, my brake lights go out and no one knows that I have my brakes on and just about get rear ended a few times. I have had the brake light switch replaced about 5 times. No one came seem to figure out the problem. Also . my dash tells me "check Gas Cap" when nothing is wrong with it Had a part replaced underneath in back. Some type of switch maybe? Cannot remember what its called. Any ideas what could be causing these problems or if they may be related?
Last edited by redhhr2009; 06-10-2016 at 06:24 PM. Reason: misspelled word
06-10-2016, 06:35 PM
#2
Administrator
Join Date: 10-13-2011
Location: Welland,Ont Canada
Posts: 36,431
Welcome to the site, brake pedal switch position out of whack , ground wires, found this for you in the search window
https://www.chevyhhr.net/forums/prob...-lights-40728/
The gas cap issue could be corrosion on the filler neck
https://www.chevyhhr.net/forums/prob...gas-cap-36056/
https://www.chevyhhr.net/forums/prob...-lights-40728/
The gas cap issue could be corrosion on the filler neck
https://www.chevyhhr.net/forums/prob...gas-cap-36056/
06-10-2016, 06:50 PM
#3
Platinum Member
Join Date: 12-06-2009
Location: Alabama
Posts: 11,086
Welcome to the site.
I don't understand your statement "had the brake light switch replaced about 5 times".
Did this fix the problem temporarily ? Or, do you just keep replacing them hoping 1 will eventually fix it.
Fwiw. It's called a brake pedal position sensor. It doesn't turn on the brake lights itself. It tells the computer that you've pressed the pedal, which in turn, the computer then activates the brake light circuit.
To me it sounds like you have a wiring issue. I would check the plug end at the brake pedal position sensor. With it having been replaced numerous times, all that unplugging and plugging back up could have damaged the wiring connection.
I don't understand your statement "had the brake light switch replaced about 5 times".
Did this fix the problem temporarily ? Or, do you just keep replacing them hoping 1 will eventually fix it.
Fwiw. It's called a brake pedal position sensor. It doesn't turn on the brake lights itself. It tells the computer that you've pressed the pedal, which in turn, the computer then activates the brake light circuit.
To me it sounds like you have a wiring issue. I would check the plug end at the brake pedal position sensor. With it having been replaced numerous times, all that unplugging and plugging back up could have damaged the wiring connection.
06-10-2016, 07:28 PM
#4
Technical Moderator
Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,660
To begin, you need to understand that the "brake switch" is NOT a switch, it is a pedal position sensor that sends a signal to the BCM.
With input from the ECM and the TCM the BCM then commands the brake lights.
The CHMSL has a relay in addition.
If you know how to read a wiring schematic, I can PM you.
With input from the ECM and the TCM the BCM then commands the brake lights.
The CHMSL has a relay in addition.
If you know how to read a wiring schematic, I can PM you.
