PROM - No Start Condition, Ignition Module

File In Section: 6E Engine Fuel & Emission

Bulletin No.: 77-65-16

Date: May, 1997

Subject:
No Start Condition
(Reprogram PCM)

Models:
1997 Buick Skylark
1997 Chevrolet Cavalier, Malibu
1997 Oldsmobile Achieva
1997 Pontiac Sunfire, Grand Am
with 2.4L Engine (VIN Code T - RPO LD9)

Condition

Some vehicles with the above condition may exhibit a no start condition caused by ignition module failure. This failure results in a loss of spark to the ignition coil for cylinders 2 and 3.

Vehicles Involved





Involved are certain 1997 J-Car and N-Car models equipped with the 2.4L (RPO LD9) VIN Engine Code T engine, that fall within the following VIN breakpoints:

Cause

A voltage feedback condition in the ignition module caused by random voltage spikes in the vehicle electrical system may cause the control circuitry in the Ignition module to be damaged.

Correction

Install a new Ignition Module, and reprogram the PCM with the revised calibration that prevents the voltage spikes from reaching the ignition module. This calibration is available on CD-ROM # 6 and later versions.

Calibration Numbers





Use the correct calibration from the list:

Warranty Information





For vehicles repaired under warranty, use as shown.