Emissions - SES Lamp ON/DTC P0420 Set
Bulletin No.: 04-06-05-001Date: January 14, 2004
TECHNICAL
Subject:
Service Engine Soon (SES) Light Illuminated, DTC P0420 Set (Replace Front Pipe and Catalytic Converter)
Models:
1998 Chevrolet S10 Pickup Truck Models
1998 GMC Sonoma Pickup Truck Models
with 2.2L Engine (VIN 4 - RPO LN2)
Condition
Some owners may comment on a Service Engine Soon (SES) light being illuminated. Upon investigation, the technician may find DTC P0420 has been set.
Cause
Due to engine temperature, over time the flex joint in the front pipe may break down and cause the catalytic converter to fail.
Correction
In addition to replacing the catalytic converter, be sure to replace the front pipe.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer