Aveo L4-1.6L (2008)
Engine Control Module: Customer Interest
Engine Controls - MIL ON/DTC's Set/Driveability Issues
TECHNICAL
Bulletin No.: 08-06-04-007B
Date: June 10, 2009
Subject: EI08029 - Engine Control Module (ECM) Replacement, Reprogramming, MIL/SES and/or DTC Set, Driveability Concerns, Reduced Engine
Power or Poor Performance (Diagnose/Replace ECM)
Models:
2006-2008 Chevrolet Aveo
2006-2008 Pontiac Wave (Canada Only)
with Engine RPO L91
Please Refer to GMVIS
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Supercede:
This bulletin is being revised to end the need for information from the field and provide repair information. Please discard Corporate Bulletin
Number 08-06-04-007A (Section 06 - Engine/Propulsion System).
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Condition
Some customers may comment on an illumination of the MIL/SES or various driveability concerns with one or more of the following symptoms:
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Reduced Engine Power
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Rough Idle
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Poor Performance, etc.
Upon further investigation, the technician may find more than one related ECM DTC stored in the module.
Cause
This condition may be caused by a concern with ECMs that contain a date code between 5278 and 6063. Also, internal fault diagnostic codes or
driveability concerns may be caused by factors external to the ECM.
Correction
Please follow the instructions below depending on the fault present.
Instructions if MIL is On (Current or History Code Exists)
1. Check and record all Diagnostic Trouble Codes (DTCs) using a Tech 2(R).
2. Download all Freeze Frame Data to the computer using TIS Software. Refer to Corporate Bulletin Number 07-07-30-010A for more information
on downloading.
3. Proceed to diagnose the vehicle using SI diagnostics:
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If the ECM contains DTC P0606 - Control Module Internal Performance - and the date code (1) on the ECM is between 5278-6063, replace
the ECM. Refer to Engine Control Module Replacement in SI. All other date codes follow SI diagnostics.
