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#27
01-08-2018, 03:54 PM
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It came from the factory like that.
The CU code is the code assigned to both that particular master cylinder and brake booster assembly together.Sometimes the bail wire of the master cylinder lid carries a CU sticker wrapped around it as well. If a car has a buildsheet,it's 2 digit Master/Booster code will show up on that also. This is typical of all GM car lines,with different 2 letter codes of course. 
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RAII4speed (01-08-2018) | ||
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