A/C - Insufficient Cooling Diagnosis Table Updated
File In Section: 1 - HVACBulletin No.: 66-12-06
Date: September, 1996
SERVICE MANUAL UPDATE
Subject:
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.
Bulletin No.: 66-12-06:
The included revised chart "A" should be used in place of the chart "A" in the 1991-97 Service Manuals.