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1999 Chevrolet Silverado 1500 4.3L MIL Lamp on
I have a Ho2 nightmare and I hope some one has seen this before. I have used two different scanners and still get the same readings, sensor 1-1 and 2-1 vary with good cross counts and steady pulse width readings on both [...] 1-2 shows roughly 650 to 800 milli...
FIX posted 11/8/2004
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Message Closed w/FIX
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Related Documents & Media | VIN | 1GCEC14WXX |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet Silverado 1500
| VIN | 1GCEC14WXX |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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