LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Black box in computer

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Old 05-17-2014, 10:14 AM
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Default Black box in computer

What is the removable plug in black box inside a OBD1?
Old 05-17-2014, 01:53 PM
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You mean the knock module?
Old 05-18-2014, 01:50 PM
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I guess. Take off the only cover you can and there is a plug in black square box. Was just wondering. Thx
Old 05-19-2014, 08:46 AM
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Originally Posted by rhmagic1
I guess. Take off the only cover you can and there is a plug in black square box. Was just wondering. Thx
Sounds like the Knock module to me. The Vortec trucks with the black box have them too.



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