Reading Vin Option Codes????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Get R Done · 11-03-2004, 11:44 PM

[B]Anybody know how to read the SERVICE PARTS IDENTIFICATION tag in the glovebox????? Trying to figureout what the gear ratio for the axles are in an 89 Chevy blazer????? Any info on how I can find out ???? Thank's

James670X · 11-04-2004, 02:26 AM

GT5 = 4.10
GT4 = 3.73
GU6 = 3.42
GU5 = 3.23
GU4 = 3.08

If you can not decode it from the list above you can go to www.s-series.org and type it in there RPO decoder. Hope that helps.
James

DMP-Bud-8 · 11-07-2004, 01:02 PM

This should help you out a bit
It has most of all the codes used by GM
Hope this helps ya out

http://www.w-body.com/rpo.html

11-03-2004, 11:44 PM	#1
Get R Done Registered User Join Date: Oct 2004 Location: Muscle Shoals, Alabama Posts: 9	Reading Vin Option Codes????? [B]Anybody know how to read the SERVICE PARTS IDENTIFICATION tag in the glovebox????? Trying to figureout what the gear ratio for the axles are in an 89 Chevy blazer????? Any info on how I can find out ???? Thank's __________________ SEMPER FIDELIS

11-04-2004, 02:26 AM	#2
James670X Registered User Join Date: Oct 2004 Location: Calgary, Alberta, Canada Posts: 34	GT5 = 4.10 GT4 = 3.73 GU6 = 3.42 GU5 = 3.23 GU4 = 3.08 If you can not decode it from the list above you can go to www.s-series.org and type it in there RPO decoder. Hope that helps. James

11-07-2004, 01:02 PM	#3
DMP-Bud-8 Registered User Join Date: Nov 2004 Posts: 2	This should help you out a bit It has most of all the codes used by GM Hope this helps ya out http://www.w-body.com/rpo.html



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