Aurora V8-4.0L VIN C (1996)
Powertrain Control Module: Technical Service Bulletins
PCM - New Calibration Enhancements
File In Section: 6E - Engine Fuel & Emission
Bulletin No.: 67-65-25B
Date: March, 1997
INFORMATION
Subject:
PCM Calibration Enhancement
Models:
1996 Cadillac DeVille, DeVille Concours, Eldorado, Eldorado ETC, Seville SLS, Seville STS
1996 Oldsmobile Aurora
with 4.0L, 4.6L Engines (VINs C, Y, 9 - RPOs L47, LD8, L37)
This bulletin is being revised for additional DTC codes. Please discard Corporate Bulletin Number 67-65-25A (Section 6E - Engine Fuel and Emission).
A PCM calibration enhancement has been released for the 4.0L and 4.6L engines identified above. This PCM calibration enhancement is located on
Techline CD ROM disc # 4 1997. This PCM calibration can be used to service 1996 model year 4.0L and 4.6L engines with the following DTC codes
after following the complete instructions below for each DTC code listed.
For any DTC codes without asterisk, proceed to the Parts Information section of this bulletin. If any of the DTC codes with asterisk above are present,
carefully follow the steps listed below:
Important:
All DTC codes, technician observations and customer comments must be recorded on the repair order in accordance with Article 1.6.2 G of the
General Motors Service Policies and Procedure Manual.
Verify if the vehicle has been previously updated with an enhanced calibration from Techline CD ROM disc # 4 1997. If the vehicle was updated with an
enhanced calibration from Techline CD ROM disc # 4 1997, then consult the diagnostic procedures for the specific DTC codes listed in Section 6E of
the applicable Service Manual. If the vehicle was not updated with an enhanced calibration from Techline CD ROM disc # 4 1997, then proceed to the
