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2008 CTS 3.6 DI
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3 Posts
Discussion Starter #1
Hey Everybody - Newbe here. Just bought an 08 CTS 3.6 DI with 75K miles. The hight mount brake light stopped working. I replaced it with a new one and it still does not work. Has anybody had this problem?

John
 

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'08 CTS Black Raven/Ebony 3.6DI FE2 6-speed manual
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149 Posts
Have you checked the wiring / have power to the light? I'd recommend looking at the wiring harness at the point where the trunk lid and trunk meet, there have been multiple issues posted due to wire breaks, shorts etc...
 

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2008 CTS 3.6 DI
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3 Posts
Discussion Starter #3
Thanks. I will take a look this weekend. Someone told me it may be the BCM?
 

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'14 CTS-V LongRoof; '16 ATS-V Sedan,' 04 Trailblazer 4x4; '10 CTS LongRoof gone but never forgotten
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14,166 Posts
Possibly - is there a switch of sorts near the brake pedal that controls this?
 

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2008 CTS 3.6 DI
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3 Posts
Discussion Starter #5
TheShadow Knows! Thanks for the hint. Found a broken wire in the harness. Added a piece that could take the motion, shrink wrapped and taped. Works great.

John
 

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'14 CTS-V LongRoof; '16 ATS-V Sedan,' 04 Trailblazer 4x4; '10 CTS LongRoof gone but never forgotten
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14,166 Posts
Yeah, Baby! You're buying the first round!
 
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