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2005 chevy trailblazer_lt
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I would suspect that it's the OEM's part number (not GM/Delco's number).

For example, Bosch might make something for GM - they would cast there number into it during manufacture. What GM calls it after that, they wouldn't know nor care of! :)
 

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2006 chevy trailblazer_lt
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Discussion Starter #3
I would suspect that it's the OEM's part number (not GM/Delco's number).

For example, Bosch might make something for GM - they would cast there number into it during manufacture. What GM calls it after that, they wouldn't know nor care of! :)
Makes sense... I see the same type of part with different codes embedded on them. I wonder why sellers of pre-owned parts publish this code as if someone can conclude the part number out of it...
 
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