For 1990-2009 cars

# CLUNK NOISE FROM REAR SUSPENSION (CHECK NUT)

#### SUBJECT: CLUNK NOISE FROM THE REAR SUSPENSION (CHECK TORQUE/ TIGHTEN SHOCK MOUNTING NUT)

#### MODELS: 1995 BUICK SKYLARK 1995 OLDSMOBILE ACHIEVA 1995 PONTIAC GRAND AM

#### VIN BREAKPOINTS:

BUICK - SC400046 THRU SC400145 OLDSMOBILE - SM300044 THRU SM300473 PONTIAC - SC700050 THRU SC701727 SM500027 THRU SM500910

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ATTN: SERVICE DIRECTOR SERVICE MANAGER NEW CAR PREP MANAGER

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#### CONDITION:

SOME OWNERS OF THE ABOVE LISTED VEHICLES MAY COMMENT ON A "CLUNK" NOISE FROM THE REAR SUSPENSION.

#### CAUSE:

THIS CONDITION MAY BE DUE TO A LOOSE NUT ON THE REAR SHOCK LOWER MOUNTING.

#### CORRECTION:

1. WITH VEHICLE ON HOIST, CHECK POSITION OF SHOCK ANTI-ROTATION TABS ON AXLE MOUNTING BRACKETS.

2. IF ANTI-ROTATION TAB IS CENTERED ON AXLE MOUNTING BRACKET, CHECK FOR CORRECT TORQUE USING FOLLOWING PROCEDURE:

A.) INSERT A 19MM (3/4") O.D. SHIM BETWEEN THE RIGHT SIDE OF THE SHOCK ANTI-ROTATION TAB AND THE AXLE MOUNTING BRACKET.

B.) WHILE HOLDING SHIM IN POSITION BETWEEN ANTI-ROTATION TAB AND AXLE BRACKET, TIGHTEN SHOCK MOUNTING NUT TO 47 N.M (35 LB. FT.).

3. IF ANTI-ROTATION TAB IS NOT CENTERED ON AXLE MOUNTING BRACKET, REPOSITION ANTI-ROTATION TAB AND TIGHTEN SHOCK MOUNTING NUT USING THE FOLLOWING PROCEDURE:

A.) ROTATE ANTI-ROTATION TAB TO CENTERED POSITION BY TURNING SHOCK MOUNTING NUT.

B.) INSERT A 19MM (3/4") O.D. SHIM BETWEEN THE RIGHT SIDE OF THE SHOCK ANTI-ROTATION TAB AND THE AXLE MOUNTING BRACKET.

C.) WHILE HOLDING SHIM IN POSITION BETWEEN ANTI-ROTATION TAB AND AXLE BRACKET, TIGHTEN SHOCK MOUNTING NUT TO 47 N.M (35 LB. FT.).

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: E5807 LABOR TIME: .3 HR.

FIGURES: 0

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.

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