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2007 Chevrolet Silverado 1500 LTZ 5.3L MIL Lamp on
veichle came to another shop with [...] changed cat assy. code came back on.I got veichle with p0420 & [...] tested cold.o2's switching/following [...],tune-up [...] [...],no exhaust leaks,02's in correct positions.f/press,[...] [...] and long term fuel trim b...
FIX posted 10/22/2013
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Message Closed w/FIX
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15 Replies Received
15 Replies Received
Related Documents & Media | VIN | 3GCEK13M27 |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
| P0430 | Catalyst Efficiency Below Threshold (Bank 2) |
Message Closed w/FIX
Vehicle Data
2007 Chevrolet Silverado 1500 LTZ
| VIN | 3GCEK13M27 |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
| P0430 | Catalyst Efficiency Below Threshold (Bank 2) |
Video