SMU - SECTION 4 - FUEL SYSTEMS CONTROLLED IDLE SPEED. GMC Truck S15 Pickup

SUBJECT: SERVICE MANUAL UPDATE - SECTION 4 - FUEL SYSTEMS - CONTROLLED IDLE SPEED SPECIFICATION CHANGE

MODELS: 1994 CHEVROLET AND GMC S TRUCKS WITH 2.2L ENGINE (VIN 4 - RPO LN2) AND AUTO TRANSMISSION

THIS BULLETIN CANCELS AND SUPERSEDES BULLETIN 316404 TO CORRECT THE CATEGORY IDENTIFIER/GROUP REFERENCE. PLEASE DISCARD BULLETIN 316404 (GROUP REFERENCE 6 - ENGINE).

THIS BULLETIN CONTAINS REVISIONS TO THE 1994 S/T "DRIVEABILITY AND EMISSIONS" SERVICE MANUAL. THE "CONTROLLED IDLE SPEED" SPECIFICATION IN "SECTION 4" IS 800 RPM. THE NEW SPECIFICATION OF "890 RPM" WAS UPDATED AFTER THE PUBLICATION OF THE SERVICE MANUAL. PLEASE REVISE "SECTION 4" TO REFLECT THIS CHANGE FROM 800 RPM TO 890 RPM.

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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.