1999 GMC Sierra 1500 Pickup Owner's Manual - Page 388
1999 GMC Sierra 1500 Pickup Manual
Page 388 highlights
Scheduled Maintenance Services GASOLINEENGINESWITHLIGHTDUTYEMISSIONS- FOOTNOTES: *An EmissionControlService **See "Explanation of ScheduledMaintenanceServices''inthissection. tTo determinetheemissionsclassification of yourenginerefer to "Selectingthe ProperMaintenance Chart" in thissection. TO332 7-8
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