SMU - SECTION 6B - COOLING & RADIATOR - REVISED. GMC Truck GMC C Pickup

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6B - COOLING AND RADIATOR - REVISED RADIATOR FAN AND BLADE CLUTCH REPLACEMENT

MODELS: 1996 CHEVROLET AND GMC C/K MODELS WITH 4.3L, 5.0L, 5.7L ENGINES (VINS W,M,R-RPOS L35,L30,L31)

THIS BULLETIN REVISES THE RADIATOR FAN AND FAN BLADE CLUTCH REPLACEMENT PROCEDURE. THE REVISED PROCEDURE INCLUDES THE TORQUE TO APPLY TO THE FAN AND CLUTCH BOLTS WHEN USING THE J TOOL TO INSTALL THE FAN AND CLUTCH ASSEMBLY ONTO THE WATER PUMP STUD.

TOOLS REQUIRED:

J-41240 FAN CLUTCH WRENCH

REMOVE OR DISCONNECT (FIGURE 1)

CAUTION:

TO HELP AVOID PERSONAL INJURY OR DAMAGE TO THE VEHICLE, A BENT, CRACKED OR DAMAGED FAN BLADE OR HOUSING SHOULD ALWAYS BE REPLACED.

1. UPPER FAN SHROUD. REFER TO "FAN SHROUD REPLACEMENT" IN THIS SECTION. 2. DRIVE BELT. REFER TO "DRIVE BELT REPLACEMENT" IN THIS SECTION. 3. FAN AND CLUTCH USING J-41240. 4. FAN BLADE FROM CLUTCH.

CAUTION:

DO NOT USE OR REPAIR A DAMAGED FAN ASSEMBLY. AN UNBALANCED FAN ASSEMBLY COULD FLY APART AND CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE. REPLACE DAMAGED ASSEMBLIES WITH NEW ASSEMBLIES.

INSTALL OR CONNECT (FIGURE 1)

1. FAN BLADE TO CLUTCH.

TIGHTEN * BOLTS TO 23 NM (17 LB. FT.)

2. FAN AND CLUTCH USING J-41240.

TIGHTEN * FAN CLUTCH NUT TO 56 NM (41 LB. FT.)

3. DRIVE BELT. 4. UPPER FAN SHROUD.

FIGURES: 1 ATTACHMENTS - 0

Object Number: 95349 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.