Check Gages Light, Battery Voltage Low, Accessory Drive Belt Slipping or Missing (Install Crankshaft Balancer and Washer from WPC)
Bulletin Number: 05-06-01-001B
2005 Chevrolet Corvette with 6.0L Engine (VIN U - RPO LS2)
Built Prior to VIN Breakpoint 55111039
Condition
Some customers may comment on the Check Gages Light or the Battery Voltage Low indicator coming on. Additionally, some customers may comment on the accessory drive belt either slipping or being missing.
Cause
The crankshaft balancer bolt may have become loose.
Correction
Install a new crankshaft balancer pulley, washer and a new balancer pulley bolt using the following procedure.
Parts Information
Part Number: 12557840
Bolt, Crankshaft Harmonic Balancer
Quantity: 1
Part Number: 12598247
Washer, Crankshaft Balancer
Quantity: 1
Part #: 12583637
Balancer, Crankshaft Harmonic
Quantity: 1
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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Article ID: 331
Created: July 17, 2014
Last Updated: July 17, 2014
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/2005-corvette-service-bulletin-check-gauges-light-battery-voltage-low-accessory-drive-belt-slipping-or-missing-install-crankshaft-balancer-and-washer-from-wpc-331.html