Impala V6-3.5L VIN N (2006)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Int. MIL ON/DTC P0128 Set
Bulletin No.: 07-06-02-003
Date: March 07, 2007
TECHNICAL
Subject:
Intermittent Check Engine Light On, DTC P0128 Set (Diagnose and Reprogram PCM, if Necessary)
Models:
2006 Buick Terraza
2006 Chevrolet Impala, Malibu, Malibu Maxx, Monte Carlo, Uplander
2006 Pontiac G6, Montana SV6
2006 Saturn Relay
with 3.5L or 3.9L Engine (VINs N, K, 1 - RPOs LZ4, LZE, LZ9)
Condition
Some customers may comment on a check engine light being illuminated. This condition is intermittent and upon investigation, the technician may find
DTC P0128 set.
Correction
Verify that the cooling system is filled to the proper level and using a scan tool, verify that the thermostat is opening at the proper temperature. If
everything is functioning properly, then reprogram the PCM with a new calibration using the Service Programming System (SPS).
An updated PCM calibration has been released to address this condition. This new service calibration is available on TIS2WEB.
The new calibration is included in a calibration that addresses long crank time in hot restart situations.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer
