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engine light and 3rd brake light issue 07 classic

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Old December 11th, 2011, 6:02 PM
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Default engine light and 3rd brake light issue 07 classic

I have a 2007 Classic 2500HD 4x4. The third brake light doesnt work, nor the cargo lights. The regular brake lights work fine. I have changed the bulbs and have found all the fuses in the fusebox are good. Before I start taking interior apart any other ideas?

Second issue is the check engile light. Went to Autozone and the reader said it was not connected to the truck. Tried a diffrent reader (non autozone) and the truck still would not communicate with the second reader either. The plug looked there was some dirt/lint in it, so I cleaned it out and tried again but again no deal. Any Ideas?

Thanks for any help yall can give me.
Old December 11th, 2011, 8:24 PM
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Are you getting any voltage at the CHMSL fuse in the I/P fuse block? As for the OBD connection problem, check the CIG LTR fuse?
Old December 12th, 2011, 1:27 PM
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I will check them this evening. Thanks for giving me a place to start.
Old December 12th, 2011, 5:26 PM
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Both the chmsl and lighter fuse were blown. Brake light works now and I will get a reader on it ASAP. Thanks again
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