For 1990-2009 cars

# DIESEL EXHAUST PRESS REGULATOR SERVICE MANUAL REVISION

A REVISION IN THE 1981 SERVICE MANUAL ON PAGE 6E-74,FIG.6E-100 AND 6E-101 SHOULD BE NOTED. FIG. 6E-100 SHOULD BE NOTED "EXHAUST PRESSURE REGULATOR SWITCH- VIN N- EXC. CALIF" AND FIG. 6E-101 EXHAUST PRESSURE REGULATOR SOLENOID- VIN N-EXC. CALIF.

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.