GM Service Manual Online
For 1990-2009 cars only

SERVICE GUILD: ON-CAR BRAKE ROTOR TURNING TOOL

VEHICLES AFFECTED: ALL 1980 - 1989 VEHICLES EQUIPPED WITH DISC BRAKES

A new tool for on-car turning of brake rotors is now available through General Motors Dealer Equipment. The tool number is 38 7040OS10.

This tool is designed to compensate for tolerance stack-ups from hubs, bearings, spindles, etc., by finishing the rotor while it rotates in it's normal on-car position.

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.