SMU - SECTION 6A2 - 2.2L L4 ENGINE MECHANICAL. GMC Truck Jimmy

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6A2 - 2.2L L4 ENGINE MECHANICAL - REVISED CONNECTING ROD AND PISTON REPLACEMENT PROCEDURE

MODELS: 1994-95 CHEVROLET AND GMC TRUCK S/T MODELS

THIS BULLETIN IS BEING ISSUED TO CORRECT THE CONNECTING ROD AND PISTON REPLACEMENT PROCEDURE IN SECTION 6A2 OF THE 1994 AND 1995 S/T SERVICE MANUALS. UNDER STEP 4 OF THE INSTALLATION PROCEDURE, THE TECHNICIAN IS INSTRUCTED TO LOOSEN THE CONNECTING ROD BOLT NUTS 1 FULL TURN AND TORQUE TO 95 N.M (70 LB. FT.). THIS PROCEDURE IS WORDED INCORRECTLY AND IS BEING CHANGED TO "CRANKSHAFT BEARING CAPS TO 95 N.M (70 LB. FT)". THIS PROCEDURE IS FOR CHECKING CRANKSHAFT END PLAY. THE PROPER TORQUE SPECIFICATION IS CONNECTING ROD CAP NUTS TO 52 N.M (38 LB. FT.).

FIGURES: 0 ATTACHMENTS: 1

Object Number: 77138 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.