1993 GMC Suburban Owner's Manual - Page 354
1993 GMC Suburban Manual
Page 354 highlights
FOOTNOTES: An Emission Control Service *' See "Explanation of ScheduledMaintenanceServices" in this section. S Applicable only to trucks sold in theUnited States. A Also,a Noise Control Service(applicable to vehicleswithengine VIN Code J). t This maintenance schedule applies to sit diesel engines available. TO331 - 7-1 6
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