Camaro V8-5.7L VIN G (1998)
Drive Belt: All Technical Service Bulletins
Engine - Accessory Drive Squeak
File In Section: 06 - Engine/Propulsion System
Bulletin No.: 99-06-01-007
Date: May, 1999
TECHNICAL
Subject:
Accessory Drive Squeak
(Replace Idler Pulley)
Models:
1997-99 Chevrolet Corvette
1998-99 Chevrolet Camaro
1998-99 Pontiac Firebird
with 5.7 L Engine (VIN G - RPO LS1)
Condition
Some customers may comment on a squeak noise coming from the engine or accessory drive while the engine is running. This squeak may vary in
volume and may be heard inside the vehicle with the windows up and the radio on.
Cause
The idler pulley dust shield may distort during assembly due to torquing of the mounting bolt. This distortion may cause the Idler pulley dust shield to
contact the bearing race and the pulley resulting in the squeak noise.
Correction
A new idler pulley assembly is available with a thicker dust shield to prevent the distortion of the dust shield. The previous dust shield thickness is 0.61
mm. The new dust shield thickness is 1.37 mm.
Important:
^
Do not over-torque the mounting bolt or the condition may reoccur.
^
Do not use pneumatic or electric tools for installation of the idler pulley assembly.
Tighten
Torque the idler pulley bolt to 50 N-m (37 lb ft).
