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Question: Brake lights are on all the time

MatthewMI

Member
Joined
Nov 16, 2016
Messages
19
Location
Lansing, MI
Corvette
1988 35th Anniversary
So my 1988 is off to the shop for the clutch replacement. All back together, they had to swap the clutch master cylinder as well. But now they are having an issue with the brake lights not turning off. Hey tried to unplug the switch at the pedal but said they still are on.

Trying to wrap tap my head around what the issue could be so I can try to start trouble shooting. Anyone ever seen anything like this before? It seems like it had this issue at home once when I was replacing the high mount bulbs and then it was fine. I just can't imagine what could happen that would make them stay on, other than a switch.

Thanks in advance for any help
 

DaveP85C4

Active member
Joined
Oct 11, 2007
Messages
43
Location
Kalifornia
Some GM's have two switches on the brake pedal. The wire colors for the brake lights are orange and white. So they need to unplug the connector with these wire colors. The switch is self adjusting. Push the brake pedal down a couple of inches. Wiggle the switch, and push it towards the pedal. Pull the pedal up against the stop, and the pedal will push the switch into the correct position.
 

DonB

Well-known member
Joined
Mar 25, 2015
Messages
339
Location
Chicago
Corvette
2019 ZO6 in Elkhart Lake Blue
DaveP is right. Some have a second switch that is designed to disengage the Cruise Control. As Dave said the Orange & White wires connect to the brake light switch. Be sure the shop didn't bend or dislocate the brake light switch or it's mount. Plus be sure they just didn't break the switch. It's only plastic and old plastic is brittle.
 

MatthewMI

Member
Joined
Nov 16, 2016
Messages
19
Location
Lansing, MI
Corvette
1988 35th Anniversary
Thanks! It looks like they just moved the switch when installing a new clutch master cylinder.
 

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