Thread: RPO Codes
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Old 01-26-2007, 02:26 PM
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BNaylor BNaylor is offline
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Re: RPO Codes

Just about everything you find on the web concerning GM RPO codes leaves alot to be desired. I can see a bunch of late model GM RPO codes missing especially engine and autotransaxle right off the top of my head.

L36 - Normally aspirated SII 3800 V6 engine
MN3 - 4T65E 4 speed autotransaxle
M15 - 4T65E 4 speed autotransaxle
MN7 - 4T65E-HD 4 speed autotransaxle
LG8 - SFI 3100 V6 engine (used in '99-'05 Century)

On '97 and up Buick Regal/Century the SPID label is located on the back of the trunk lid.



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'99 Buick Regal LS - L36 Series II 3800 V6
'03 Honda CR250R MX - 2 Stroke 250cc
'97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold)
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