Engine Controls - DTC Code 42 Chart Revised

89pontiac06

Bulletin Number: 88-6-90
Reference Number: 916508
Publish Date: 3/89
Subject: SERVICE MANUAL UPDATE - SECTION 6E - DRIVEABILITY AND EMISSIONS/REVISED CODE 42 CHART

Models

Affected: 1988 GRAND AM 2.3L (VIN D)



The Code 42 Diagnostic Chart is revised to clarify the correct procedure for measuring resistance at the ECM connector.

This Chart replaces the Code 42 Chart found in Section 6E "Driveability and Emissions" in the Service Manual for the 1988 (VIN D) Grand Am engine applications.