MANUAL TEMP. CONTROL LEVER SLIPS FROM HOT TO COLD

SUBJECT: MANUAL TEMPERATURE CONTROL LEVER SLIPS FROM HOT TO COLD (INSTALL E RING)

MODELS: 1988-94 CHEVROLET AND GMC TRUCK C/K TRUCKS 1990-94 TOPKICK/KODIAK WITHOUT AIR CONDITIONING (C60)

CONDITION:

SOME OWNERS MAY COMMENT THAT THE TEMPERATURE CONTROL LEVER SLIPS FROM HOT TO COLD, USUALLY WHEN BLOWER MOTOR IS ON HIGH SPEED.

CAUSE:

TOO MUCH VERTICAL MOVEMENT AT THE LEVER ARM PIVOT SHAFT (FIGURE 1).

CORRECTION:

SHIM CLEARANCE AT THE PIVOT SHAFT BY INSTALLING AN "E" RING CLIP BETWEEN THE METAL AND SILICONE WASHERS ALREADY PRESENT ON THE SHAFT (FIGURE 2).

SERVICE PARTS INFORMATION:

P/N DESCRIPTION QTY 9431762 "E" RING CLIP 1

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME D0360 CONTROL ASSEMBLY, HEATER USE PUBLISHED (NON A/C) R+R LABOR OPERATION TIME

FIGURES: 2

CAPTIONS: FIGURE 1 - HEATER CONTROL LEVER ASSEMBLY SIDE VIEW FIGURE 2 - TEMPERATURE CONTROL LEVER PIVOT STACK UP

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.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.