1993 GMC Sonoma Owner's Manual - Page 319

Scheduled Maintenance Services This parttells you themaintenanceservicesyoushouldhavedone and when you shouldschedulethem. Your GMdealerknowsyourvehiclebestand wantsyou to behappywith it. If you gotoyourdealerfor all yourservice needs, you'll know that GM-trained and supported servicepeople will perform thework using genuine GM parts. Theseschedulesareforvehiclesthat: carrypassengersand cargo withintherecommendedlimits. these limits onyourvehicle'sCertificationLabel.See"Loading Vehicle"in the Index. You will find Your are driven on regularroadsurfaces,andwithin legal drivinglimits,as described in Section 4, "Your Driving and the Road". aredriven off-road in therecommendedmanner.See"OffRoadDriving With Your Four-wheel DriveVehicle"intheIndex. use the properfuel.See "Fuel" in theIndex. Selecting The Proper Maintenance Schedule Your driving conditions and how you useyourvehiclewillhelpyoudetermine whichscheduletouse. The schedulesare found later in this section. MAINTENANCESCHEDULE I Is anyoneof these true for your vehicle? Mosttripsareless than 4 miles (6 kilometers). Mosttrips are less than 10 miles (16 kilometers) and theoutside temperaturesarebelowfreezing. Theengineis at low speed most of the time(as in stop-and-go traffic, door-to-door delivery, or othercommercialuses). You operate in dustyareasor You tow a trailer. Ifanyone(ormore) chartforSchedule of these is true foryourdriving,followSchedule I hasplussigns (+). I. The off-road frequently. MAINTENANCESCHEDULE II FollowSchedule II ONLY if none of the above conditionsaretrue.Thechart forSchedule II hasdots ( 0 ) . 7-3