1997 gmc engine code po401
By HELWIEED
@HELWIEED (1)
United States
October 17, 2006 9:21pm CST
help i replaced egr valve cleaned intake and still getting engine code po401 does not come on when idleing after i reset the computer but when i take it for a ride check engine light comes on i need help fast tages run out in a couple of days
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