03 2500 hd check engin light

Asked by Hevychevy02 Apr 09, 2011 at 11:16 PM about the 2003 Chevrolet Silverado 2500HD

Question type: Maintenance & Repair

I have a 2003 2500 hd chevy with the 6.0 check engin light came on said it was the 02
sensor right bank behind the cat so I changed it reset the code 10 min later back on same
code exchanged 02 sensor put new one in tried again same thing now I'm stuck any ideas

1 Answer
425

perkinsauto67 answered 13 years ago

Is the code rich/lean condition or heater circuit. If rich/lean condition check catalytic convertor. If heater circuit check fuse or open/shorted wire. Probably heater circuit if code came back so soon.

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