Revised DTC P0420 Catalyst System Low Efficiency (04-06-04-083)
Publication date: 2004-11-12Reference number: 04-06-04-083
Revised DTC P0420 Catalyst System Low Efficiency
TECHNICAL SERVICE BULLETIN
Reference Number(s): 04-06-04-083, Date of Issue:
November 12, 2004
| Affected Model(s): | 1996-2001 Chevrolet/Geo Metro; 1996-2004 Chevrolet/Geo Tracker; 1996-1997 Pontiac Sunrunner; 1996-2001 Pontiac Firefly |
Service Information
Built with the following engines:
Qualifying Vehicle Information
| Engine | Model Year | Model |
|---|---|---|
| 1.0L Engine VIN 6 - RPO LP2 |
1996-2000 | Chevrolet/Geo Metro Pontiac Firefly |
| 1.3L Engine VIN 9 - RPO L72 |
1997 | Geo Metro Pontiac Firefly |
| 1.3L Engine VIN 2 - RPO LY8 |
1998-2001 | Chevrolet Metro Pontiac Firefly |
| 1.6L Engine VIN 6 - RPO L01 |
1996-1997 | Pontiac Sunrunner |
| 1996-2002 | Chevrolet/Geo Tracker | |
| 2.0L Engine VIN C - RPO L34 |
1999-2004 | Chevrolet Tracker |
| 2.5L Engine VIN 4 - RPO LE8 |
2001-2004 | Chevrolet Tracker |
This bulletin is being issued to revise Step 8 of DTC P0420 Catalyst System Low Efficiency in the Engine Controls sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
SMU
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| 8 |
IMPORTANT:
Before installing the replacement converter, locate and repair the cause of the TWC converter failure. Replace the three-way catalytic converter and the warm-up three-way catalytic converter (WU-TWC), if equipped. Is the action complete? |
- | Go to Step 10 | - |