Accessory Drive Belt Tensioner - Knocking Noise
File In Section: 6 - EngineBulletin No.: 47-61-36
Date: October, 1994
Subject:
Knocking Noise from the Accessory Drive Belt Tensioner (Replace Tensioner)
Models:
1994 Buick Century, Regal, Skylark
1994 Chevrolet Beretta, Corsica
1995 Chevrolet Lumina, Monte Carlo
1993 Oldsmobile Cutlass Supreme
1994 Oldsmobile Achieva, Cutlass Ciera, Cutlass Supreme
1994 Pontiac Grand Am, Grand Prix
with 3100 Engine (VIN M - RPO L82)
Condition
Some vehicles may experience a knocking noise from under the hood. This condition is more noticeable with the air conditioner on.
Cause
During periods of increased tensioner arm movement, the tensioner spring coils contact the spring guides inside the housing causing the knocking noise.
Correction
A new accessory drive belt tensioner, part number 24504828, has been developed to correct the noise issues. Refer to Section 6A5 of the appropriate vehicle service manual for proper removal and installation procedures.
Parts Information
Description Part Number
Accessory Drive Belt Tensioner 24504828
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Labor
Operation Time
J0680 Use published labor operation time.