For 1990-2009 cars

# SMU - SEC. 0B - CORRECTED CRANKCASE VENTILATION SYSTEM

#### SUBJECT: SERVICE MANUAL UPDATE - SECTION 0B - CORRECTED CRANKCASE VENTILATION SYSTEM MAINTENANCE

#### MODELS: 1994-98 ALL PASSENGER CARS AND TRUCKS

SOME SERVICE MANUALS FOR THE AFFECTED VEHICLES CONTAIN AN ERROR IN SECTION 0B - MAINTENANCE AND LUBRICATION. THE ERROR IS INCORRECT CRANKCASE VENTILATION SYSTEM MAINTENANCE RECOMMENDATIONS.

THE CHART THAT FOLLOWS HAS THE CORRECT CRANKCASE VENTILATION SYSTEM MAINTENANCE RECOMMENDATIONS.

OWNERS MANUAL MAINTENANCE SCHEDULES FOR THE ABOVE VEHICLES HAVE CORRECT CRANKCASE VENTILATION SYSTEM MAINTENANCE RECOMMENDATIONS.

FIGURES: 00 ATTACHMENTS: 01

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

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