INTERMITTENT STEERING COLUMN SNAP OR CLINK NOISE WHEN TURN.. Chevrolet Impala 1995

REVISION: 04/11/96

THIS BULLETIN IS BEING REVISED TO ADD THE PASSENGER CARS AND UPDATE PARTS INFORMATION. PLEASE DISCARD CORPORATE BULLETIN NUMBER 56-32-02 (SECTION 3 - STEERING/SUSPENSION). ______________________________________________________________________ REVISION: 09/12/97

THIS BULLETIN IS BEING REVISED TO CORRECT THE TRUCK MODELS AND PART NUMBER DESCRIPTIONS. PLEASE DISCARD CORPORATE BULLETIN NUMBER 56-32-02A, DATED APRIL, 1996 (SECTION 3 - STEERING/SUSPENSION). ______________________________________________________________________

SUBJECT: INTERMITTENT STEERING COLUMN SNAP OR CLICK NOISE WHEN TURNING (INSTALL NEW UPPER BEARING SPRING)

MODELS: 1994-96 BUICK CENTURY, LASABRE, PARK AVENUE, REGAL, ROADMASTER 1995-96 BUICK RIVIERA 1994-96 CADILLAC CONCOURS, DEVILLE, ELDORADO, FLEETWOOD, SEVILLE 1994-96 CHEVROLET CAMARO, CAPRICE, CORVETTE, LUMINA, LUMINA APV 1995-96 CHEVROLET MONTE CARLO 1994-96 OLDSMOBILE CUTLASS CIERA, CUTLASS SUPREME, EIGHTY EIGHT, NINETY EIGHT, SILHOUETTE 1995-96 OLDSMOBILE AURORA 1994-96 PONTIAC BONNEVILLE, FIREBIRD, GRAND PRIX, TRANS SPORT WITH TILT STEERING COLUMNS

1995-96 CHEVROLET AND GMC C/K, S/T TRUCK 1994-96 CHEVROLET AND GMC M/L AND G VANS WITH TILT STEERING COLUMNS

CONDITION:

SOME OWNERS MAY COMMENT ON AN INTERMITTENT STEERING COLUMN SNAP OR CLICK NOISE WHILE TURNING. THE SNAPPING OR CLICKING MAY ALSO BE FELT IN THE STEERING WHEEL.

CAUSE:

THE UPPER BEARING RACE SEAT MAY, UNDER SOME TURNING CONDITIONS, MOVE IN AN AXIAL DIRECTION ALONG THE UPPER STEERING SHAFT. THE NOISE IS A RESULT OF THE INNER RACE SEAT HANGING UP ON THE SHAFT AND THEN SUDDENLY RELEASING CAUSING A SNAPPING OR CLICKING NOISE.

CORRECTION:

A NEW UPPER BEARING SPRING WITH INCREASED STIFFNESS HAS BEEN DEVELOPED AND SHOULD BE INSTALLED IN THE STEERING COLUMN. THE NEW SPRING WILL INCREASE THE PRELOAD BETWEEN THE UPPER BEARING INNER RACE SEAT AND THE UPPER STEERING SHAFT. TO ACCOMMODATE THE NEW SPRING WITH INCREASED STIFFNESS, THE CANCEL CAM WILL ALSO NEED TO BE REPLACED. THE NEW SPRING AND CANCEL CAM, ALONG WITH A RETAINER RING AND AN UPPER BEARING INNER RACE SEAT ARE INCLUDED IN THE PARTS KIT LISTED BELOW.

SERVICE PROCEDURE:

FOLLOW THE INSTRUCTIONS GIVEN IN SECTION 3F5 OF THE APPROPRIATE SERVICE MANUAL AND THOSE CONTAINED IN KIT. BE SURE TO USE ALL PARTS SUPPLIED IN THE SERVICE KIT.

PARTS INFORMATION:

PART NUMBER DESCRIPTION =========== ===========

26059701 1994-96 A/B/C/D/E/F/H/K/U/W 26059701 1994-95 M/L/G VANS 26059702 1995-96 BUICK "G" 26059703 1995-96 OLDSMOBILE "G" 26059704 1995-96 C/K, S/T TRUCK 26059704 1996 M/L/G VANS (BOTH STYLES OF G VAN) 26059705 1994-96 "Y"

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION LABOR NUMBER DESCRIPTION TIME =============== =========== =====

E7310 A/B/C/D/E/F/H/K/ USE PUBLISHED W/Y CARS, M/L/G/U VANS LABOR TIME. AND C/K, S/T TRUCKS

E7321 G-CAR USE PUBLISHED LABOR TIME.

FIGURES: 00 ATTACHMENTS: 00

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