1993 GMC Suburban Owner's Manual - Page 348
1993 GMC Suburban Manual
Page 348 highlights
FOOTNOTES: * An Emission Control Service "*See "Explallation of ScheduledMaintenanceServices" in this section. A Also aNoiseEmissionControlService El Applicable only tovehicles sold in theUnitedStates t To determinetheemissionsclassification of your enginerefer to "Selecting the 7-1 0
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