GM Service Manual Online
For 1990-2009 cars only

OXYGEN SENSOR REPLACEMENT ADDITIONAL PARTS INFORMATION

EACH TIME AN OXYGEN SENSOR IS REMOVED FROM A CHEVROLET BUILT (VIN CODE G) 1.8L L-4 ENGINE, THE EXISTING EXHAUST OXYGEN SENSOR SHIELD MUST BE DISCARDED AND REPLACED WITH NEW PART NO. 14058729. FAILURE TO REPLACE THIS SHIELD MAY CAUSE A LEAK.

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.