why does the check engine light come on when I push the throtle past 50 on an up hill on my 04 silverado

2,405

Asked by Feb 22, 2013 at 10:42 PM about the 2004 Chevrolet Silverado 1500 LS Long Bed 4WD

Question type: General

3 Answers

the oxygen sensor is having trouble finding any oxygen...it's all used up.

20,805

cataletic convertor pluging 40% no o2

1,295

Your oxygen sensor might be failing

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