Tuesday, March 9th, 2021 AT 7:02 AM
JS69862000
- MEMBER
- 2006 CHEVROLET SILVERADO
- 4.8L
- V8
- 2WD
- AUTOMATIC
- 200,000 MILES
Misfire at idle once warmed up. Throws a code 420 for catalytic convertor. Catalytic convertor is 3 years old. No loss of power or gas mileage, no hesitation. New plugs, wires, computer flashed, o2 sensor are new. Also compression was good on cylinders. Originally had a code 300 but went away after replacing plugs and wires.
