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OR VietVet

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You can Google "GM RPO Codes" and there will be several sites that will have large lists of codes that will show what the codes are for. Like GU4 is a 3.08 gear ratio. Z56 is Police Package.
 

Marky Dissod

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Joseph Garcia

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You may find this helpful.
 

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  • 2007 YD Printbook for RPO Codes.pdf
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OP
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rmuszynski

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decoderpo.com worked great. any idea what this refers to -specifically the W/VSES?
JD9
  • Brakes, VAC power
  • BRAKE VAC POWER, 17' DISC/DISC, W/VSES, 7700 LBS
 

moviewithnotitle

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