SMU - SECTION 1B - HVAC - UPDATED CCOT. Chevrolet Chevy Suburban

SUBJECT: SERVICE MANUAL UPDATE - SECTION 1B - HVAC - UPDATED CCOT INSUFFICIENT COOLING DIAGNOSIS TABLE

MODELS: 1991-97 CHEVROLET AND GMC C/K MODELS

THIS BULLETIN UPDATES SECTION 1B "HEATER, VENTILATION, AND AIR CONDITIONING" OF THE 1991-97 C/K TRUCK SERVICE MANUALS.

THE CURRENT SERVICE MANUAL AIR CONDITIONING DIAGNOSTIC INFORMATION TABLES HAVE BEEN UPDATED TO BETTER ADDRESS THE POSSIBILITY OF A MISSING OR DAMAGED ORIFICE TUBE IN THE AIR CONDITIONING SYSTEM. THE REVISED CHART "A" WILL SEND THE TECHNICIAN TO BOTH CHARTS "D" AND "E" IN THE EVENT THAT THE EVAPORATOR INLET AND OUTLET PIPES ARE THE SAME TEMPERATURE WHILE THE AIR CONDITIONING SYSTEM IS IN OPERATION.

THE FOLLOWING REVISED CHART "A" SHOULD BE USED IN PLACE OF THE CHART "A" IN THE 1991-97 SERVICE MANUALS.

FIGURES: 0 ATTACHMENTS: 1

Object Number: 96361 Size: FS

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.