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2000 GMC Yukon XL 1500 SLE 5.3L MIL Lamp on
following shop key diagnostics we checked bank 1 post converter o2 sensor with vantage no wave form detected(flat line)we then checked the other post converter sensor and got a very inactive pattern. At this point we cleared the codes and test drove the vehicl...
FIX posted 7/10/2003
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Message Closed w/FIX
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Related Documents & Media | VIN | 3GKFK16T5Y |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Hot, Idle |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2000 GMC Yukon XL 1500 SLE
| VIN | 3GKFK16T5Y |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Hot, Idle |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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