EGR CONTROL ERROR CODE 53 NEW PROM RELEASE

1986 PARISIENNE MODELS WITH 5.OL V8 ENGINES (LG4 VIN CODE H)

In most cases, normal diagnostic and repair will correct customer complaints of "Service Engine Soon Light" Code 53 (EGR Control Error) . If the diagnostics shown in your 1986 Service Manual (Section 6El) shows the problem to be "No Trouble Found," it will be necessary to change the PROM in the ECM. Below is a listing of new PROM numbers released to correct this condition.

FEDERAL EMISSION:

APPLICATION PART NUMBER ----------- ----------- Sedans 1228284 Wagons With GU2 (2.73) Axle 1228285 Wagons With GU4 (3.08) Axle 1228286

CALIFORNIA EMISSION:

APPLICATION PART NUMBER ----------- ----------- Sedans 1228287 Wagons With GU2 (2.73) Axles 1228288 Wagons With GU4 (3.08) Axles 1228289

Use applicable labor time and operation numbers.

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.