TrailBlazer 4WD L6-4.2L VIN S (2002)
Oxygen Sensor: Customer Interest
Engine Controls - SES Lamp ON/DTC P0135 Set
Bulletin No.: 03-06-04-034
Date: June 27, 2003
TECHNICAL
Subject:
Service Engine Soon Light On, DTC P0135 Set (Replace Sensor, Reprogram PCM)
Models:
2002 Chevrolet Trailblazer
2002 GMC Envoy
2002 Oldsmobile Bravada
with 4.2L Engine (VIN S - RPO LL8)
Condition
Some customers may comment on the Service Engine Soon (SES) light coming on. Upon investigation, the technician will find diagnostic trouble code
(DTC) P0135 set, regarding oxygen sensor performance.
Cause
Condition may be due to failure of the oxygen sensor.
Correction
Follow the SI diagnostics to confirm that the oxygen sensor has failed. Replace the oxygen sensor. After replacing the sensor, verify that the vehicle has
been programmed with the latest service calibration. If the vehicle does not have the latest service calibration listed in TIS2000 version 2.5 or higher
released February 22, 2003, then reprogram the vehicle.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table.
