My brake lights are not working, running lights work except the right top one & 3rd brake light does work.

Tiny
S0053470
  • MEMBER
  • 2007 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 135,000 MILES
My brake lights are not working. 3rd brake light does work so does the cruise control. The running lights all work except for the right side top one. Checked all the fuses & they all work. Replaced the bulbs to no avail. I'm thinking brake switch but need some better advice if it could be anything else.
Saturday, September 12th, 2015 AT 10:36 AM

5 Replies

Tiny
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  • MECHANIC
  • 6,110 POSTS
If the 3rd brake light is working, it's not the switch. Check the grounds.
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Sunday, September 13th, 2015 AT 5:28 PM
Tiny
S0053470
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Exactly what I did this weekend. Then I took a step back & realized I didn't check individually the lights, turns out the lights I bought before although same # didn't work & the other light that the running light worked only, the duel filiment was half dead. Felt pretty stupid, replaced all lights & everything works, lol.
Now to try & fix the main issue alot of ppl have I've read. Service 4wd! Switch works fine, TCCM gets no signal but far as I've read it could also be the transfer case shift control so guess I'll replace that before the TCCM, sucks not to be able to get a straight answer what's wrong, even dude at shop couldn't figure out which one, I can do them both myself so I'll at least save some $ that way.
Any info on that problem would be greatly appreciated of course!
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Monday, September 14th, 2015 AT 9:05 AM
Tiny
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Ok. No worries, been there, done that.

Do me a favor and open another thread for the trans/transfer case issue and describe the issue completely for us.

Opening a new thread for the second issue allows other users to find it by searching for that type of problem. In the meantime, I'll start doing some research on it on my end.
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Tuesday, September 15th, 2015 AT 6:42 AM
Tiny
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Thanks for searching around before I post the question on a new feed, I'll be foing it tonight. Really liking this this site & will be recommending this site to anyone I know with questions about they're car or trucks.
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Tuesday, September 15th, 2015 AT 5:33 PM
Tiny
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Excellent! Thank you.
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Wednesday, September 16th, 2015 AT 8:36 AM

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