how to reset computer in 2003 impala

dean3812
0

Asked by dean3812 Jul 05, 2013 at 12:06 PM about the 2003 Chevrolet Impala LS

Question type: Maintenance & Repair

replaced O2 sensor. Check engine light is off but computer has not reset

1 Answer

Js08016
30,885

Simply drive normally for about one week. Keep the gas tank between 3/4 and 1/4 so all the computer diagnostics can run and all the readiness monitors will set. Or Google "OBD II drive cycle". There is a procedure, too lengthy to post here, that will set the readiness monitors in about 45 minutes. HTH. -Jim

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