LEAF SPRING U-BOLT ANCHOR PLATE CONTACTS JOUNCE. GMC Truck GMC G Van 1995

SUBJECT: LEAF SPRING U-BOLT ANCHOR PLATE CONTACTS JOUNCE BUMPER BRACKET ON SIDE RAIL (INSTALL NEW U-BOLTS AND ANCHOR PLATE)

MODELS: 1995 CHEVROLET G3 VANS BUILT PRIOR TO VIN BREAKPOINT SF175169 1995 GMC TRUCK G3 VANS BUILT PRIOR TO VIN BREAKPOINT SF529744 WITH 3.73 RATIO AXLE (RPO GT4)

CONDITION:

SOME OWNERS MAY COMMENT ABOUT A LOUD NOISE COMING FROM THE REAR WHEN GOING OVER BUMPS. THIS NOISE MAY BE ATTRIBUTED TO THE REAR LEAF SPRING U-BOLT ANCHOR PLATE CONTACTING THE JOUNCE BUMPER BRACKET LOCATED ON THE FRAME RAIL.

CAUSE:

BUILD VARIATION AND TOLERANCE STACK-UPS BETWEEN THE ANCHOR PLATE AND JOUNCE BUMPER BRACKET CLEARANCES, CAUSING A METAL-TO-METAL CONTACT POINT.

CORRECTION:

INSTALL A CURRENT SET OF U-BOLTS AND ANCHOR PLATE (CURRENTLY USED ON G3 VAN MODELS WITH 4.56 RATIO AXLES RPO HC4). THE INSTALLATION OF THIS SET OF HARDWARE WILL BE REVERSED FROM THE CURRENT HARDWARE; I.E. THE ANCHOR PLATE WILL BE LOCATED ON THE BOTTOM SIDE OF THE AXLE ASSEMBLY, U-BOLTS FACING DOWNWARD (FIGURE 1). #1: CURRENT CONFIGURATION #2: NEW CONFIGURATION

SERVICE PROCEDURE

REFERENCE SECTION 3D IN THE SERVICE MANUAL FOR PROPER REPLACEMENT PROCEDURES. TORQUE NUTS TO 205 N.M (151 LBS FT).

PARTS INFORMATION

P/N DESCRIPTION QTY

461540 ANCHOR PLATE 2 471667 BOLT (9.25 LENGTH, 5/8 - 18 THD.) 4 2436167 WASHER 8 12337822 NUT 8 15677309 SPACER 2 15677310 SPACER 2

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME E5227 U-BOLT OR RETAINING BOLT, USE PUBLISHED REAR LEAF SPRING - REPLACE LABOR OPERATION TIME

FIGURES: 1

CAPTIONS: FIGURE 1 - U-BOLT/ANCHOR PLATE CONFIGURATION

Object Number: 82786 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.