2008 Chevrolet Uplander LS 3.9L MIL Lamp on
this vehicle is driven mainly short runs by an elderly couple. P0420 will set intermittantly if cleared. If driven on highway for a half hour or longer it will clear the code. has new plugs and wires,no evidence of coolant ingestion, and no power loss sugg...
Summary posted 11/24/2018
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Vehicle Data2008 Chevrolet Uplander LS
Trouble Codes
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Message Closed w/Summary
Vehicle Data
2008 Chevrolet Uplander LS
VIN | 1GNDU23198 |
Engine | 3.9 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Intermittently |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |