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Unknown RPO codes

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Old 02-12-2012, 03:05 PM
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Unknown RPO codes

I have two RPO codes which come up as follows

1SZ - ???
1AY - ???

And one which the system does not recognize:

IPB

Any info on these? Thanks in advance.

The rest of the codes for my car are here:

Old 02-12-2012, 05:48 PM
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Car: 1985 IROC-Z
Engine: LB9
Transmission: MD8
Re: Unknown RPO codes

1AY means the dealer configured your car, (versus a customer checking off options on an order sheet)

Thats all I know.
Old 02-12-2012, 08:57 PM
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Re: Unknown RPO codes

Is it unusual for a dealer configured RS to have a 5 speed rather than an automatic?
Old 03-04-2012, 10:23 AM
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Car: 89 Black IROC-Z convertible
Engine: 305 TBI
Transmission: Auto
Re: Unknown RPO codes

Originally Posted by Dead Reckon
I have two RPO codes which come up as follows

1SZ - ???
1AY - ???

And one which the system does not recognize:

IPB

Any info on these? Thanks in advance.

The rest of the codes for my car are here:



The decoder that I used says....

1AY Order Modification Stock
1SZ Discount Option Package

Haven't a clue as to what either of these mean but it appears that there are discrepancies between decoder sites.
Old 03-04-2012, 10:30 AM
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Re: Unknown RPO codes

Yeah, it's strange, some of that crap is cryptic.

For instance, my '89 Oldsmobile Custom Cruiser has this code:

U39 : CLUSTER, INST, OIL, COOL TEMP, VOLTS, TRIP ODOM

Yet it has a radio dial speedometer. Strange, isn't it?
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