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GM prints Cay, Dmincn and S.M.; other CW4 lists print Dominican.
CW4 Factory-verified
Also documented for BuickCadillacChevroletGMCHummerPontiac
Documented applications
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GM prints "Cay" for Cayman; "S.M." is printed as GM has it.
This page aggregates every documented appearance of CW4 in the Saturn reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.