Terraza AWD V6-3.5L VIN L (2006)
PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - SES Lamp ON/Multiple DTC's Set
Bulletin No.: 06-06-04-003D
Date: March 20, 2007
TECHNICAL
Subject:
Service Engine Soon (SES) Light Illuminated, Multiple Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) P1404 and/or P0404
(Install EGR Valve Kit and Reprogram PCM)
Models:
2005-2006 Buick Rendezvous Built Prior to December 5, 2005
2005-2006 Buick Terraza Built Prior to January 11, 2006
2005-2006 Chevrolet Uplander Built Prior to January 11, 2006
2005-2006 Pontiac Montana SV6 Built Prior to January 11, 2006
2005-2006 Saturn Relay Built Prior to January 11, 2006
with 3.5L V6 Engine (VIN L - RPO LX9)
Supercede:
This bulletin is being revised to update the information. Please discard Corporate Bulletin Number 06-06-04-003C (Section 06 - Engine/Propulsion
System).
Condition
Some customers may comment on a Service Engine Soon (SES) light illuminated on the instrument cluster. Some vehicles may have previously been
serviced for this same condition. Technicians may also find a DTC P1404 and/or DTC P0404, which may have led to previous exhaust gas recirculation
(EGR) valve and PCM replacements.
Correction
The EGR Valve Kit, P/N 89018174, has the following parts required to perform an EGR System changeover for the vehicles listed in this bulletin only.
Please be advised that some early produced kits may contain an instruction sheet that has an error in the wiring portion of the procedure. Therefore, it is
advised that the instructions included in the kit be discarded and that only the instructions contained in this bulletin be used.
EGR Valve - P/N 12581876
EGR Gasket - P/N 12593632
Pipe Assembly, EGR Valve - P/N 12602651
Wiring Harness Connector, EGR Valve (includes terminals and wire leads) - P/N 15306175. This EGR valve kit is used to convert a Delphi EGR valve
equipped LX9 engine used in the Chevrolet Uplander, Pontiac Montana SV6, Buick Rendezvous, Buick Terraza and Saturn Relay to a Siemens valve.
This kit contains all the necessary parts for conversion. The Powertrain Control Module (PCM) calibration must be updated for a Siemens EGR valve to
work correctly. Failure to install an updated calibration when using this conversion kit may cause PCM diagnostic codes to set, resulting in a Service
Engine Soon indicator lamp to illuminate.
EGR Valve Identification
