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Engine Controls - Revised Code 53, EGR Vacuum Control

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SUBJECT REVISED CODE 53 DIAGNOSTIC CHART
FOR 3.0L & 3.8L CARBURETED ENGINES


MODELS/YEARS 1985 CUTLASS SUPREME, CUTLASS CIERA,
DELTA 88 & NINETY-EIGHT

NUMBER: 85-T-26


DATE: May 10, 1985


SECTION: 6E




The Code 53 (EGR vacuum control) diagnostic chart for 3.0L and 3.8L carbureted engines has been revised in the 1985 chassis service manual.

Please update page 6E1-65 of your Firenza, Calais, Cutlass Ciera and Ninety-Eight Chassis Service Manual, Volume 11 and page 6E1-75 of your Cutlass Supreme, Delta 88, Custom Cruiser and Toronado Chassis Service Manual with the chart on the reverse side.