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93 Chevy truck brake light problem


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SQRHD
New User

Jan 17, 2011, 12:36 PM

Post #1 of 6 (8800 views)
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93 Chevy truck brake light problem Sign In

Hello All, I have a 93 Chevy K3500 w/6.5 diesel, manual trans.....I have a brake like problem....all tail and turn signal lights WORK, but I have NO brake lights! I replaced the brake pedal switch assuming this was the root of all evil...(You know what assuming means...), anyway, replacing it did not fix the problem, actually it created another....Cruise control will not disengage when brake pedal applied. I guessing this problem is under dash near brake pedal switch. My problem is I don't have a wiring diagram....and don't want to pay $20-30 bucks if I can get one online.....So my question is....Does anyone have any suggestions on my problem or know a website I can get a wiring diagram?
Thanx, Greg V.


Hammer Time
Ultimate Carjunky / Moderator
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Jan 17, 2011, 1:15 PM

Post #2 of 6 (8794 views)
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Re: 93 Chevy truck brake light problem [In reply to] Sign In

Use a test light to verify power in and out of the brake light switch. If you have power coming out when the brake is applied, then look at the turn signal switch.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Jan 17, 2011, 9:07 PM

Post #3 of 6 (8788 views)
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Re: 93 Chevy truck brake light problem [In reply to] Sign In

The brake light switch, in most cases, is adjustable (for the cruise control issue). Also, if not out to lunch, the brake lamp circuit is fused.
Loren
SW Washington


SQRHD
New User

Jan 18, 2011, 9:17 AM

Post #4 of 6 (8782 views)
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Re: 93 Chevy truck brake light problem [In reply to] Sign In

Thank You, Hammer & Champlain, I've checked both fuse and power in/out of switch. This is what leads me to believe a wiring problem under dash area, Hence trying to locate a wiring diagram for that vehicle specific....I thought the dealer would have been alittle more helpful, but I should have known better, It is of course nearly 20 yrs old....
Thanks again, Greg V.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 18, 2011, 10:42 AM

Post #5 of 6 (8778 views)
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Re: 93 Chevy truck brake light problem [In reply to] Sign In

Here ya go







~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ganjarome
Novice

Feb 8, 2011, 5:20 AM

Post #6 of 6 (8743 views)
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Re: 93 Chevy truck brake light problem [In reply to] Sign In

Don't be a fool. Spend the 20 or 30 Bucks on a manual that will help for the rest of your vehicle ownership. It also adds to the resale value of your vehicle. I should listen to myself! Lol!




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